WO2001069387A2 - Architecture de plate-forme d'avis - Google Patents

Architecture de plate-forme d'avis Download PDF

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Publication number
WO2001069387A2
WO2001069387A2 PCT/US2001/008711 US0108711W WO0169387A2 WO 2001069387 A2 WO2001069387 A2 WO 2001069387A2 US 0108711 W US0108711 W US 0108711W WO 0169387 A2 WO0169387 A2 WO 0169387A2
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WO
WIPO (PCT)
Prior art keywords
notification
information
user
notifications
context
Prior art date
Application number
PCT/US2001/008711
Other languages
English (en)
Other versions
WO2001069387A3 (fr
WO2001069387A8 (fr
Inventor
Eric J. Horvitz
David O. Hovel
Andrew W. Jacobs
Carl M. Kadie
Original Assignee
Microsoft Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/596,348 external-priority patent/US6513026B1/en
Priority claimed from US09/596,364 external-priority patent/US6601012B1/en
Priority claimed from US09/596,365 external-priority patent/US7249159B1/en
Priority claimed from US09/595,401 external-priority patent/US7417650B1/en
Priority to CN01809514A priority Critical patent/CN100594701C/zh
Priority to EP01922463A priority patent/EP1264238A2/fr
Priority to US10/220,419 priority patent/US7243130B2/en
Priority to AU2001249261A priority patent/AU2001249261A1/en
Priority to JP2001568198A priority patent/JP5243679B2/ja
Application filed by Microsoft Corporation filed Critical Microsoft Corporation
Priority to US09/881,502 priority patent/US20020087649A1/en
Priority to US09/882,857 priority patent/US8701027B2/en
Publication of WO2001069387A2 publication Critical patent/WO2001069387A2/fr
Publication of WO2001069387A8 publication Critical patent/WO2001069387A8/fr
Publication of WO2001069387A3 publication Critical patent/WO2001069387A3/fr
Priority to US10/464,184 priority patent/US7634528B2/en
Priority to US10/611,491 priority patent/US7444383B2/en
Priority to US10/610,487 priority patent/US7743340B2/en
Priority to US10/609,818 priority patent/US7565403B2/en
Priority to US11/749,508 priority patent/US7975015B2/en
Priority to US12/476,195 priority patent/US8019834B2/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • G06Q10/107—Computer-aided management of electronic mailing [e-mailing]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/451—Execution arrangements for user interfaces
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • G06Q10/109—Time management, e.g. calendars, reminders, meetings or time accounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1895—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for short real-time information, e.g. alarms, notifications, alerts, updates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/21—Monitoring or handling of messages
    • H04L51/212—Monitoring or handling of messages using filtering or selective blocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/56—Unified messaging, e.g. interactions between e-mail, instant messaging or converged IP messaging [CPM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • H04L67/306—User profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/54—Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/55—Push-based network services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/62—Establishing a time schedule for servicing the requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/63—Routing a service request depending on the request content or context
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/75—Indicating network or usage conditions on the user display
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/21—Monitoring or handling of messages
    • H04L51/226—Delivery according to priorities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]

Definitions

  • the present invention relates generally to computer systems, and more particularly to a system and method providing an architecture to facilitate receipt and notification of alerts generated by various devices and applications for conveyance to a user.
  • a user may receive e-mail and instant messages over a computer, pages over a pager, voice-mail over a phone, such as a cellular ("cell") or landline phone, and news information over the computer.
  • a phone such as a cellular ("cell") or landline phone
  • news information over the computer.
  • a user may be away from his or her computer, but receive an important e-mail.
  • the user may only have access to a cell phone or a pager.
  • messages transmitted via one modality e.g., e-mail
  • important time may lapse before the user actually receives the message.
  • messages may become useless before they are actually received since the message itself required a response or action by the user within a given timeframe.
  • the user may be working on the computer, yet have turned off the ringer and voice-mail indicator on the phone in order to avoid disturbances while concentrating on the computer. If an important voice-mail were left during this time, however, the user would generally have no way of knowing whether an important message was received unless they routinely checked the voice mail.
  • the architecture includes a context analyzer or component, one or more notification sources and sinks, and a notification manager.
  • the context analyzer stores user profile information regarding notification parameters of a user, such as the user's default notification preferences, and provides a user context identification and updating service.
  • Notification sources generate notifications intended for the user, while notification sinks provide the notifications to the user.
  • the notification manager conveys or directs notifications generated by the sources to the sinks, based on information stored and determined by the context analyzer and on information provided or inferred about the urgencies of the notifications. For example, the notification manager can access or infer the context of the user ⁇ e.g., the user's current location and focus of attention).
  • Such sources of information can include the user's context profile, the user's online calendar, the time of day, events about the world, organization, system, and/or the user's activity, for example.
  • Notifications can then be determined through an analysis of the context and the urgency of the information. This may include determining which of the notifications should be conveyed to the user, via which of the sinks, and in which manner or modality that is provided by the sinks.
  • a user may, for example, receive e-mail alerts, yet have the e-mail automatically directed to a cell phone, if desired.
  • a voice-mail may be directed to a desktop computer, as is suitably determined by the notification manager.
  • notifications from notification sources are processed by the notification manager, which determines whether the user should be notified. If the manager determines that the user should be notified, then the manager also determines how the user should be notified. This can be based on the information stored in the user profile, including such information as the user's preferences and current context in order to notify desired notification sinks.
  • the sinks can include, for example, a desktop computer, a cell phone, a pager, and/or other device/application.
  • the architecture of the notification platform can be generalized to substantially any notification, including those associated with a potential provision of a service by a software component in a desktop or mobile setting, for example.
  • notifications may include:
  • alerts about services such as those that seek to automatically provide assistance or tips to a user working with a software application and/or automatically perform scheduling by examining e-mail at the focus of a user's attention;
  • the context analyzer determines the current context of the user, such as the user's current location and attentional state.
  • the determined context can be employed to determine whether, when and how notifications intended for the user should be conveyed, for example.
  • the context is determined via one or more of: direct specification by the user; direct measurement using one or more sensors; a user-modifiable profile indicating context; one or more potentially user-modifiable rules that indicate context; and/or an inferential analysis utilizing a model, such as a Bayesian or a statistical model.
  • a model such as a Bayesian or a statistical model.
  • a decision-theoretic analysis may be employed by the notification manager to determine which notifications received from notification sources should be conveyed to the user, and via which of one or more modes associated with the notification sinks.
  • a value is determined for the notification sinks and related modes, equal to an expected value of information contained within a notification, less an expected cost of disruption to convey the notification via the mode of the sink, less an expected value of the user independently learning the information contained with the notification without notification, and less an actual cost of conveying the notification via the mode and sinks. If this value is greater than a predetermined conveyance threshold, then the notification is conveyed via the mode of the sink having the highest such value, for example.
  • heuristic communications policies may be employed by the notification manager to determine which notifications received from notification sources should be conveyed to the user, and via which modes of associated notification sinks.
  • Fig. 1 is a schematic block diagram of a system illustrating a notification platform architecture in accordance with an aspect of the present invention.
  • Fig. 2 is a schematic block diagram illustrating a context analyzer in accordance with an aspect of the present invention.
  • Fig. 3 is a schematic block diagram illustrating notification sources and sinks in accordance with an aspect of the present invention.
  • Fig. 4 is a diagram illustrating a utility of notification curve in accordance with an aspect of the present invention.
  • Fig. 5 is a diagram illustrating a user specification interface for notifications in accordance with an aspect of the present invention.
  • Fig. 6 is a diagram illustrating context information sources in accordance with an aspect of the present invention.
  • Fig. 7 is a diagram illustrating a rules-based system for determining context in accordance with an aspect of the present invention.
  • Fig. 8 is a schematic block diagram illustrating an inference-based system for determining context in accordance with an aspect of the present invention.
  • Fig. 9 is a diagram illustrating an inference model for determining context in accordance with an aspect of the present invention.
  • Fig. 10 is a diagram illustrating a temporal inference model for determining context in accordance with an aspect of the present invention.
  • Fig. 11 is a flow chart diagram illustrating a methodology for determining context in accordance with an aspect of the present invention.
  • Fig. 12 is a flow chart diagram illustrating a methodology for notification decision-making in accordance with an aspect of the present invention.
  • Fig. 13 is a flow chart diagram illustrating a methodology providing a decision- theoretic analysis for a notification platform in accordance with an aspect of the present invention.
  • Fig. 14 is a diagram illustrating an exemplary display in accordance with an aspect of the present invention.
  • Fig. 15 is a flow chart diagram illustrating a methodology providing a variable display in accordance with an aspect of the present invention.
  • Fig. 16 is a diagram illustrating value versus time in accordance with an aspect of the present invention.
  • Fig. 17 is a flow chart diagram illustrating a methodology providing stream- cycling in accordance with an aspect of the present invention.
  • Fig. 18 is a diagram illustrating an exemplary stream-cycling display in accordance with an aspect of the present invention.
  • Fig. 19 is a diagram illustrating an exemplary stream-stacking display in accordance with an aspect of the present invention.
  • Fig. 20 is a more detailed diagram illustrating an exemplary stream-stacking display in accordance with an aspect of the present invention.
  • Fig. 21 is a flow chart diagram illustrating a methodology providing stream- stacking in accordance with an aspect of the present invention.
  • Fig. 22 is a diagram illustrating an exemplary display in accordance with an alternative aspect of the present invention.
  • Fig. 23 is a schematic block diagram illustrating a suitable operating environment in accordance with an aspect of the present invention.
  • the present invention relates to a system and methodology to enable a variety of information associated with one or more notification sources to be directed to one or more notification sinks ⁇ e.g., modality for receiving information) via a notification platform architecture.
  • the architecture includes a context analyzer for determining a user's state such as location and attentional focus, wherein the user's state is employed by a notification manager to make decisions regarding what, when and how information generated by the notification sources should be forwarded to the notification sinks, for example. These decisions can include a cost benefit analysis wherein considerations are given as to whether the benefits of notifying the user are outweighed by the costs of disrupting the user.
  • a system 10 illustrates a notification architecture according to an aspect of the present invention.
  • the system 10 includes a context analyzer 22, a notification manager 24 (also referred to as an event broker), one or more notification sources (e.g., modality for providing information) 1 through N, 26, 27, 28 and one or more notification sinks, 1 through M, 36, 37, 38, wherein N an M are integers, respectively.
  • the sources are also referred to as event publishers, while the sinks are also referred to as event subscribers. There can be any number of sinks and sources.
  • the notification manager 24 conveys notifications, which are also referred to as events or alerts, from the sources 26-28 to the sinks 36-38, based in part on parametric information stored in and/or accessed by the context analyzer 22.
  • the context analyzer 22 stores/analyzes information regarding variables and parameters of a user that influence notification decision-making.
  • the parameters may include contextual information, such as the user's typical locations and attentional focus or activities per the time of day and the day of the week, and additional parameters conditioned on such parameters, such as the devices users tend to have access to in different locations.
  • Such parameters may also be functions of observations made autonomously via one or more sensors.
  • one or more profiles maybe selected or modified based on information about a user's location as can be provided by a global positioning system (GPS) subsystem, on information about the type of device being used and/or the pattern of usage of the device, and the last time a device of a particular type was accessed by the user.
  • GPS global positioning system
  • automated inference may also be employed, to dynamically infer parameters or states such as location and attention.
  • the profile parameters may be stored as a user profile that can be edited by the user.
  • the notification architecture can enable users to specify in real-time his or her state, such as the user not being available except for important notifications for the next "x" hours, or until a given time, for example.
  • the parameters can also include default notification preference parameters regarding a user's preference as to being disturbed by notifications of different types in different settings, which can be used as the basis from which to make notification decisions by the notification manager 24, and upon which a user can initiate changes.
  • the parameters may include default parameters as to how the user wishes to be notified in different situations ⁇ e.g., such as by cell phone, by pager).
  • the parameters can include such assessments as the costs of disruption associated with being alerted by different modes in different settings. This can include contextual parameters indicating the likelihood that the user is in different locations, the likelihood that different devices are available, and the likelihood of his or her attentional status at a given time, as well as notification parameters indicating how the user desires to be notified at a given time.
  • Information stored by the context analyzer 22, according to one aspect of the present invention is inclusive of contextual information determined by the analyzer.
  • the contextual information is determined by the analyzer 22 by discerning the user's location and attentional status based on one or more contextual information sources (not shown), as is described in more detail in a later section of the description.
  • the context analyzer 22 may be able to determine with precision the actual location of the user via a global positioning system (GPS) that is a part of a user's car or cell phone.
  • GPS global positioning system
  • the analyzer may also employ a statistical model to determine the likelihood that the user is in a given state of attention by considering background assessments and/or observations gathered through considering such information as the type of day, the time of day, the data in the user's calendar, and observations about the user's activity.
  • the given state of attention can include whether the user is open to receiving notification, busy and not open to receiving notification, and can include other considerations such as weekdays, weekends, holidays, and/or other occasions/periods.
  • the sources 26-28 generate notifications intended for the user and/or other entity.
  • the sources 26-28 may include communications, such as Internet and network-based communications, local desktop computer-based communications, and telephony communications, as well as software services, such as intelligent help, background queries, and automated scheduling.
  • Notification sources are defined generally herein as that which generates events, which can also be referred to as notifications and alerts, intended to alert a user, or a proxy for the user, about information, services, and/or a system or world event.
  • a notification source can also be referred to as an event source.
  • e-mail may be generated as notifications by an e-mail notification source such that it is prioritized, wherein an application program or system generating the notification assigns the e-mail with a relative priority corresponding to the likely importance or urgency of the e-mail to the user.
  • the e-mail may also be sent without regard to the relative importance to the user.
  • Desktop-centric notifications can include an automated dialog with the goal of alerting a user to a potentially valuable service that he or she may wish to execute ⁇ e.g., scheduling from a message), information that the user may desire to review ⁇ e.g., derived from a background query), or errors and/or other alerts generated by a desktop computer.
  • Internet-related services can include notifications including information that the user has subscribed to, such as headlines of current news every so often, and stock quotes, for example.
  • Notification sources 26-28 can themselves be push-type or pull-type sources.
  • Push-type sources are those that automatically generate and send information without a corresponding request, such as headline news and other Internet-related services that send information automatically after being subscribed to.
  • Pull-type sources are those that send information in response to a request, such as e-mail being received after a mail server is polled.
  • Still other notification sources include the following:
  • the notification sinks 36-38 are able to provide notifications to the user.
  • such notification sinks 36-38 can include computers, such as desktop and/or laptop computers, handheld computers, cell phones, landline phones, pagers, automotive-based computers, as well as other systems/applications as can be appreciated.
  • some of the sinks 36-38 can convey notifications more richly than other of the sinks.
  • a desktop computer typically has speakers and a relatively large color display coupled thereto, as well as having a higher bandwidth for receiving information when coupled to a local network or to the Internet.
  • a notification sink can refer to that which subscribes, via an event subscription service, for example, to events or notifications.
  • the notification manager 24 accesses the information stored and/or determined by the context analyzer, and determines which of the notifications received from the sources 26-28 to convey to which of the sinks 36-38. Furthermore, the notification manager 24 can determine how the notification is to be conveyed, depending on which of the sinks 36-38 has been selected to send the information to. For example, it may be determined that notifications should be summarized before being provided to a selected sinks 36-38. The invention is not limited to how the manager 24 makes its decisions as to which of the notifications to convey to which of the notification sinks, and in what manner the notifications are conveyed. In accordance with one aspect, a decision- theoretic analysis can be utilized.
  • the notification manager 24 can be adapted to infer important uncertainties about variables including a user's location, attention, device availability, and amount of time until the user will access the information if there were no alert.
  • the notification manager 24 can then make notification decisions about whether to alert a user to a notification, and if so, the nature of the summarization and the suitable device or devices to employ for relaying the notification.
  • the notification manager 24 determines the net expected value of a notification. In doing so, it can consider the following:
  • Inferences made about uncertainties thus may be generated as expected likelihoods of values such as the cost of disruption to the user with the use of a particular mode of a particular device given some attentional state of the user, for example.
  • the notification manager 24 can make decisions as to one or more of the following:
  • the notification manager 24 can perform an analysis, such as a decision- theoretic analysis, of pending and active notifications, evaluates context-dependent variables provided by information sinks and sources, and infers selected uncertainties, such as the time until a user is likely to review information and the user's location and current attentional state.
  • inference refers generally to the process of reasoning about or inferring states of the system 10, environment, and/or user from a set of observations as captured via events and/or data. Inference can be employed to identify a specific context or action, or can generate a probability distribution over states, for example.
  • the inference can be probabilistic - that is, the computation of a probability distribution over states of interest based on a consideration of data and events. Inference can also refer to techniques employed for composing higher-level events from a set of events and/or data. Such inference results in the construction of new events or actions from a set of observed events and/or stored event data, whether or not the events are correlated in close temporal proximity, and whether the events and data come from one or several event and data sources.
  • the notification manager 24 can access information stored in a user profile by the context analyzer 22 in lieu of or to support a personalized decision- theoretic analysis.
  • the user profile may indicate that at a given time, the user prefers to be notified via a pager, and only if the notification has a predetermined classification ⁇ e.g., importance) level.
  • a predetermined classification ⁇ e.g., importance
  • Such information can be utilized as a baseline from which to start a decision-theoretic analysis, or can be the manner by which the notification manager 24 determines how and whether to notify the user.
  • the notification platform architecture 10 can be configured as a layer that resides over an eventing or messaging infrastructure.
  • eventing and messaging systems and protocols can include:
  • HTTP Hypertext Transport Protocol
  • SOAP Simple Object Access Protocol
  • WMI Windows Management Instrumentation
  • the architecture can be configured as a layer that resides over a flexible distributed computational infrastructure, as can be appreciated by those of ordinary skill within the art.
  • the notification platform architecture can utilize an underlying infrastructure as a manner by which sources send notifications, alerts and events, and as a manner by which sinks receive notifications, alerts and events, for example.
  • the present invention is not so limited, however.
  • the context analyzer 22 includes a user notification preferences store 52, a user context module 54 that includes a user context profile store 55, and a whiteboard 57.
  • the context analyzer 22 according to one aspect of the invention can be implemented as one or more computer programs executable by a processor of a computer from a machine-readable medium thereof, such as a memory.
  • the preferences store 52 stores notification parameters for a user, such as default notification preferences for the user, such as a user profile, which can be edited and modified by the user.
  • the preferences store 52 can be considered as that which stores information on parameters that influence how a user is to be notified.
  • the user context module 54 determines a user's current context, based on one or more context information sources 60 as published to the whiteboard 57, for example.
  • the user context profile store 55 stores context parameters for a user, such as the default context settings for the user, which can be edited and modified by the user.
  • the user context module 54 provides a best guess or estimate about a user's current context information by accessing information from the profile store 55 and/or updating a prior set of beliefs in the store 55 with live sensing, via the one or more context sources 60.
  • the profile store 55 can be considered as that which stores a priori where a user is, and what the user is doing, for example.
  • the user context profile store 55 can be a pre-assessed and/or predefined user profile that captures such information as a deterministic or probabilistic profile.
  • the profile can be of typical locations, activities, device availabilities, and costs and values of different classes of notification as a function of such observations as time of day, type of day, and user interactions with one or more devices.
  • the type of day can include weekdays, weekends and holidays, for example.
  • the user context module 54 can then actively determine or infer aspects of the user's context or state, such as the user's current or future location and attentional state.
  • actual states of context can be accessed directly from the context information sources 60 via the whiteboard 57, and/or, can be inferred from a variety of such observations through inferential methods such as Bayesian reasoning as is described in more detail below.
  • the context information sources 60 provide information to the context module 54 via the whiteboard 57 regarding the user's attentional state and location, from which the module 54 can make a determination as to the user's current context ⁇ e.g., the user's current attentional state and location). Furthermore, the invention is not limited to a particular number or type of context sources 60, nor the type of information inferred or accessed by the user context module 54. However, the context sources 60 can include multiple desktop information and events, such as mouse information, keyboard information, application information ⁇ e.g., which application is currently receiving the focus of the user), ambient sound and utterance information, text information in the windows on the desktop, for example.
  • the whiteboard 57 can include a common storage area, to which the context information sources 60 can publish information, and from which multiple components, including sources and the context module 54 can access this information.
  • An event also referred to as a notification or alert, generally can include information about an observation about one or more states of the world.
  • Such states can include the status of system components, the activity of a user, and/or a measurement about the environment.
  • events can be generated by an active polling of a measuring device and/or source of events, by the receipt of information that is sent on a change, and/or per a constant or varying event heartbeat.
  • context sources 60 includes personal-information manager (PIM) information of the user, which generally can provide scheduling information regarding the schedule of the user, for example.
  • PIM personal-information manager
  • the current time of day, as well as the user's location - for example, determined by a global positioning system (GPS), and/or a user's access of a cell phone, PDA, or a laptop that can be locationally determined — are also types of context sources 60.
  • GPS global positioning system
  • real-time mobile device usage is a type of context source 60.
  • a mobile device such as a cell phone can determine if it is currently being accessed by the user, as well as device orientation and tilt (e.g., indicating information regarding device usage as well), and acceleration and speed ⁇ e.g., indicating information as to whether the user is moving or not).
  • device orientation and tilt e.g., indicating information regarding device usage as well
  • acceleration and speed e.g., indicating information as to whether the user is moving or not.
  • the notification sources 26-28 typically generate notifications that are conveyed to the notification manager 24, which determines when notifications should occur, and, if so, which of the notifications should be conveyed to which of the notification sinks 36-38 and in what order.
  • notification sources 26-28 can have one or more of the following parameters within a standard description of attributes and relationships, referred to herein as a notification source schema or source schema.
  • schema can be provided for sources, for sinks, and for context- information sources, described above.
  • Such schemas provide declarative information about different components and can enable the sources 26-28, the notification manager 24, the sinks 36-38, and the context analyzer 22 to share semantic information with one another.
  • different schemas provide information about the nature, urgency, and device signaling modalities associated with notification.
  • schema can be defined generally as a collection of classes and relationships among classes that defines the structure of notifications and events, containing information including event or notification class, source, target, event or notification semantics, ontological content information, observational reliability, and substantially any quality-of-service attributes, for example.
  • Parameters (not shown) for notification source schema can include one or more of: message class; relevance; importance; time criticality; novelty; content attributes; fidelity tradeoffs, and/or source information summary information.
  • the message class for a notification generated by a notification source indicates the type of communication of the notification, such as e-mail, instant message, numerical financial update, and desktop service, for example.
  • the relevance for a notification generated by notification sources indicates a likelihood that the information contained within the notification is relevant, for one or more specified contexts. For example, the relevance can be provided by a logical flag, indicating whether the source is relevant for a given context or not.
  • the novelty of the notification indicates the likelihood that the user already knows the infomiation contained within the notification. That is, the novelty is whether the information is new to the user, over time (indicating if the user knows the information now, and when, if ever, the user will learn the information in the future without being alerted to it).
  • Fidelity tradeoffs associated with the notification indicate the loss of value of the information within the notification that can result from different forms of specified allowed truncation and/or summarization, for example. Such truncation and/or summarization may be required for the notification to be conveyed to certain types of notification sinks 36-38 that may have bandwidth and/or other limitations preventing the sinks from receiving the full notification as originally generated.
  • Fidelity in general refers to the nature and/or degree of completeness of the original content associated with a notification. For example, a long e-mail message may be truncated, or otherwise summarized to a maximum of 100 characters allowed by a cell phone, incurring a loss of fidelity.
  • Fidelity tradeoffs refer to a set of fidelity preferences of a source stated either in terms of orderings (e.g., rendering importance in order of graphics first, then sound) and/or costs functions that indicate how the total value of the content of the notification diminishes with changes in fidelity.
  • orderings e.g., rendering importance in order of graphics first, then sound
  • costs functions that indicate how the total value of the content of the notification diminishes with changes in fidelity.
  • a fidelity tradeoff can describe how the full value associated with the transmission of a complete e-mail message changes with increasingly greater amounts of truncation.
  • Content attributes for example, can include a summary of the nature of the content, representing such information as whether the core message includes text, graphics, and audio components. The content itself is the actual graphics, text, and/or audio that make up the message content of the notification.
  • the importance of a notification refers to the value of the information contained in the notification to the user, assuming the information is relevant in a current context. For example, the importance can be expressed as a dollar value of the information's worth to the user.
  • Time criticality indicates time-dependent change in the value of information contained in a notification - that is, how the value of the information changes over time. In most but not all cases, the value of the information of a notification decays with time. This is illustrated in the diagram of Fig. 4.
  • a graph 80 depicts the utility of a notification mapped over time. At the point 84 within the graph, representing the initial time, the importance of the notification is indicated, while the curve 86 indicates the decay of the utility over time.
  • default attributes and schema templates for different notification sources or source types may be made available in notification source profiles stored in the user notification preferences store, such as the store 52 of Fig. 2.
  • Source summary information enables a source to post general summaries of the status of information and potential notifications available from a source.
  • source summary information from a messaging source may include information about the total number of unread messages that are at least some priority, the status of attempts by people to communicate with a user, and/or other summary information.
  • the notification sinks 36-38 can be substantially any device or application by which the user or other entity can be notified of information contained in notifications. The choice as to which sink or sinks are to be employed to convey a particular notification is determined by the notification manager 24.
  • Notification sinks 36-38 may have one or more of the following parameters provided within a schema. These parameters may include a device class; modes of signaling (alerting); and, for the associated mode, fidelity/rendering capabilities, transmission reliability, actual cost of communication, and/or attentional cost of disruption, for example.
  • the schema for the devices can additionally include a description of the alerting attributes and parameters for controlling the attributes, and functions by which other attributes ⁇ e.g., transmission reliability, cost of distribution) change with the different settings of the alerting attributes.
  • the schema for notification sinks provides for the manner by which the notification devices communicate semantic information about their nature and capabilities with the notification manager 24 and/or other components of the system.
  • Default attributes and schema templates for different device types can be made available in device profiles stored in the user notification preferences store, such as the store 52 of Fig. 2 as described in the previous section.
  • Such default templates can be directed to override values provided by devices or to provide attributes when they are missing from schema provided by such devices.
  • the class of the device refers to the type of the device such as a cell phone, a desktop computer, and a laptop computer, for example.
  • the class can also be more general, such as a mobile or a stationery device.
  • the modes of signaling refer to the manner in which a given device can alert the user about a notification.
  • Devices may have one or more notification modes. For example, a cell phone may only vibrate, may only ring with some volume, and/or it can both vibrate and ring.
  • a desktop display for an alerting system can be decomposed into several discrete modes (e.g., a small notification window in the upper right hand of the display vs.
  • a device can enable modes with alerting attributes that are functions of parameters, as part of a device definition.
  • alerting attributes include such controls as the volume at which an alert is played at the desktop, rings on a cell phone, and the size of an alerting window, for example.
  • the transmission reliability for a mode of a notification sink 36-38 indicates the likelihood that the user will receive the communicated alert about a notification, which is conveyed to the user via the sink with that mode.
  • transmission reliability may be dependent on the device availability and context of the user, the transmission reliability of different modes of a device can be conditioned on such contextual attributes as the location and attention of a user.
  • Transmission reliability for one or more unique contextual states defined by the cross product of such attributes as unique locations and unique attentional states, defined as disjunctions created as abstractions of such attributes (e.g., for any location away from the home, and any time period after 8 am and before noon), can also be specified.
  • Contexts can also influence transmission reliability because of ambient noise and/or other masking or distracting properties of the context.
  • the actual cost of communication indicates the actual cost of communicating the information to the user when contained within a notification that is conveyed to the sink. For example, this cost can include the fees associated with a cell phone transmission.
  • the cost of disruption includes the attentional costs associated with the disruption associated with the alert employed by the particular mode of a device, in a particular context. Attentional costs are typically sensitive to the specific focus of attention of the user.
  • the fidelity/rendering capability is a description of the text, graphics, and audio/tactile capabilities of a device, also given a mode. For example, a cell phone's text limit may be 100 characters for any single message, and the phone may have no graphics capabilities.
  • an interface 90 illustrates context specifications selectable by a user that can be utilized by the context analyzer 22 in determining a user's current context.
  • the context of the user can include the attentional focus of the user - that is, whether the user is currently amenable to receiving notification alerts — as well as the user's current location.
  • the present invention is not so limited, however.
  • Direct specification of context by the user enables the user to indicate whether or not he or she is available to receive alerts, and where the user desires to receive them.
  • a default profile (not shown) can be employed to indicate a default attentional state, and a default location wherein the user can receive the alerts.
  • the default profile can be modified by the user as desired.
  • the interface 90 illustrates how direct specification of context can be implemented, according to an aspect of the present invention.
  • a window 91 for example, has an attentional focus section 92 and a location section 94.
  • the user can check one or more check boxes 96, for example, indicating whether the user is always available to receive alerts; whether the user is never available to receive alerts; and, whether the user is only available to receive alerts that has an importance level greater than a predetermined threshold. It is to be appreciated that other availability selections can be provided.
  • a threshold can be measured in dollars, but this is for exemplary purposes only, and the invention is not so limited.
  • the user can increase the threshold in the box 98 by directly entering a new value, or by increasing or decreasing the threshold via arrows 100.
  • the user can check one or more of the check boxes 102, to indicate where the user desires to have alerts conveyed.
  • the user can have alerts conveyed at the desktop, by e-mail, at a laptop, on a cell phone, in his or her car, on a pager, or on a personal digital assistant (PDA) device, and so forth.
  • PDA personal digital assistant
  • the window 91 wherein there can be preset defaults for the checkboxes 96 and the box 98 of the section 92 and the checkboxes 102 of the section 94, can be considered a default user profile.
  • the profile is user modifiable in that the user can override the default selections with his or her own desired selections. Other types of profiles can also be utilized in accordance with the invention.
  • Fig. 6 a determination of user context by direct measurement, for example, using one or more sensors, is illustrated in accordance with the present invention.
  • the context of the user can include the user's attentional focus, as well as his or her current location.
  • the invention itself is not so limited, however.
  • Direct measurement of context indicates that sensor(s) can be employed to detect whether the user is currently amenable to receiving alerts, and to detect where the user currently is.
  • an inferential analysis in conjunction with direct measurement can be utilized to determine user context, as is described in a later section of the description.
  • the system 110 includes a context analyzer 112, and communicatively coupled thereto a number of sensors 114-120, namely, a cell phone 114, a video camera 115, a microphone 116, a keyboard 117, a PDA 118, a vehicle 119, and a GPS 120, for example.
  • the sensors 114-120 depicted in Fig. 6 are for exemplary purposes only, and do not represent a limitation or a restriction on the invention itself.
  • sensor as used herein is a general and overly encompassing term, meaning any device or manner by which the context analyzer 112 can determine what the user's current attentional focus is, and/or what the user's current location is.
  • the video camera 115 can, for example, be in the user's office, to detect whether the user is in his or her office (viz., the user's location), and whether others are also in his or her office, suggesting a meeting with them, such that the user should not be disturbed (viz., the user's focus).
  • the microphone 116 can also be in the user's office, to detect whether the user is talking to someone else, such that the user should not be disturbed, is typing on the keyboard ⁇ e.g., via the sounds emanating therefrom), such that the user should also not be presently disturbed.
  • the keyboard 117 can also be employed to determine if the user is currently typing thereon, such that, for example, if the user is typing very quickly, this may indicate that the user is focused on a computer-related activity, and should not be unduly disturbed (and, also can indicate that the user is in fact in his or her office).
  • the PDA device 118 can indicate that the user is able to receive alerts at the device 118 - that is, the location at which notifications should be conveyed is wherever the device 118 is located.
  • the device 118 can also be utilized to determine the user's current attentional focus.
  • the vehicle 119 can be utilized to determine whether the user is currently in the vehicle - that is, if the vehicle is currently being operated by the user.
  • the speed of the vehicle can be considered, for example, to determine what the user's focus is. If the speed is greater than a predetermined speed, for instance, then it may be determined that the user is focused on driving, and should not be bothered with notification alerts.
  • the GPS device 120 can also be employed to ascertain the user's current location, as known within the art.
  • the context of the user can include the user's attentional focus, as well as his or her current location.
  • Determining context via rules indicates that a hierarchical set of if-then rules can be followed to determine the user's location and/or attentional focus.
  • a diagram illustrates an exemplary hierarchical ordered set of rules 130.
  • the set of rules 130 depicts rules 132, 133, 134, 135, 136, 137 and 138, for example. It is noted that other rules may be similarly configured. As illustrated in Fig.
  • rules 133 and 134 are subordinate to 132, while rule 134 is subordinate to rule 133, and rule 138 is subordinate to rule 138.
  • the rules are ordered in that rule 132 is first tested; if found true, then rule 133 is tested, and if rule 133 is found true, then rule
  • a set of rules can be constructed by the user such that the user's context is determined. For example, with respect to location, the set of rules can be such that a first rule tests whether the current day is a weekday.
  • a second rule subordinate to the first rale tests whether the current time is between 9 a.m. and 5 p.m. If it is, then the second rule indicates that the user is located in his or her office, otherwise the user is at home. If the first rule is found to be false - that is, the current day is a weekend and not a weekday - then an otherwise rule may state that the user is at home. It is noted that this example is not meant to be a restrictive or limiting example on the invention itself, wherein one or more other rules may also be similarly configured.
  • Inferential analysis refers to using an inference process(es) on a number of input variables, to yield an output variable(s), namely, the current context of the user.
  • the analysis can include in one aspect utilization of a statistical model and/or a Bayesian model.
  • FIG. 8 a diagram of a system 140 is illustrated in which inferential analysis is performed by an inferential engine 142 to determine a user's context 144, according to an aspect of the present invention.
  • the engine 142 is in one aspect a computer program executed by a processor of a computer from a computer-readable medium thereof, such as a memory.
  • the user context 144 can be considered the output variable of the engine 142.
  • the engine 142 can process one or more input variables to make a context decision.
  • Such input variables can include one or more sensor(s) 148, such as the sensor(s) that have been described in conjunction with a direct measurement approach for context determination in a previous section of the description, as well as the current time and day, as represented by a clock 150, and a calendar 152, as maybe accessed in a user's scheduling or personal-information manager (PIM) computer program, and/or on the user's PDA device, for example.
  • Other input variables can also be considered besides those illustrated in Fig. 8.
  • the variables of FIG. 8 are not meant to be a limitation or a restriction on the invention itself.
  • an exemplary inferential model such as provided by a statistical and/or Bayesian model that can be executed by the inferential engine described above is illustrated in accordance with the present invention.
  • a computer system can be somewhat uncertain about details of a user's state.
  • probabilistic models can be constructed that can make inferences about a user's attention or other state under uncertainty.
  • Bayesian models can infer a probability distribution over a user's focus of attention.
  • states of attention can be formulated as a set of prototypical situations or more abstract representations of a set of distinct classes of cognitive challenges being addressed by a user.
  • models can be formulated that make inferences about a continuous measure of attentional focus, and/or models that directly infer a probability distribution over the cost of interruption for different types of notifications.
  • Bayesian networks may be employed that can infer the probability of alternate activity contexts or states based on a set of observations about a user's activity and location.
  • Fig. 9 displays a Bayesian network 154 for inferring a user's focus of attention for a single time period.
  • States of a variable, Focus of Attention 156 refer to desktop and non-desktop contexts.
  • Exemplary attentional contexts considered in the model include situation awareness, catching up, nonspecific background tasks, focused content generation or review, light content generation or review, browsing documents, meeting in office, meeting out of office, listening to presentation, private time, family time, personal focus, casual conversation and travel, for example.
  • the Bayesian network 154 indicates that a user's current attention and location are influenced by the user's scheduled appointments 158, the time of day 160, and the proximity of deadlines 162.
  • the probability distribution over a user's attention is also in influenced by summaries of the status of ambient acoustical signals 164 monitored in a user's office, for example. Segments of the ambient acoustical signal 164 over time provide clues/inputs about the presence of activity and conversation.
  • a software application currently at top-level focus 166 in an operating system or other environment influences the nature of the user's focus and task, and the status of a user's attention and the application at focus together influence computer-centric activities.
  • Such activity includes the stream of user activity built from sequences of mouse and keyboard actions and higher-level patterns of application usage over broader time horizons.
  • Such patterns include e-mail-centric and Word-processor centric, and referring to prototypical classes of activity involving the way multiple applications are interleaved.
  • Fig. 10 illustrates a Bayesian model 168 of a user's attentional focus among context variables at different periods of time.
  • a set of Markov temporal dependencies is illustrated by the model 168, wherein past states of context variables are considered in present determinations of the user's state.
  • Bayesian models 168 consider information provided by an online calendar, for example, and a stream of observations about room acoustics and user activity as reported by an event sensing system (not shown), and continues to provide inferential results about the probability distribution of a user's attention.
  • Figs. 11, 12, 13, 15, 17 and 21 illustrate methodologies for providing portions of a notification architecture such as a context analyzer, a notification manager, and user interface in accordance the present invention. While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the present invention is not limited by the order of acts, as some acts may, in accordance with the present invention, occur in different orders and/or concurrently with other acts from that shown and described herein. For example, those skilled in the art will understand and appreciate that a methodology could alternatively be represented as a series of interrelated states or events, such as in a state diagram. Moreover, not all illustrated acts may be required to implement a methodology in accordance with the present invention.
  • a computer-implemented method is desirably realized at least in part as one or more programs running on a computer — that is, as a program executed from a computer- readable medium such as a memory by a processing system of a computer.
  • the programs are desirably storable on a machine-readable medium such as a floppy disk or a CD-ROM, for distribution and installation and execution on another computer.
  • the program or programs can be a part of a computer system or a computer, such as that described in conjunction with Fig. 23 below.
  • a flow diagram 170 illustrates determining a user's context in accordance with the present invention.
  • the process includes determining the user's location in 171, and the user's focus in 172.
  • determining the user's location in 171, and the user's focus in 172 can be accomplished by one or more of the approaches described previously.
  • a profile can be employed; a user can specify his or her context; direct measurement of context can be utilized; a set of rules can be followed; an inferential analysis, such as via a Bayesian or a statistical model, can also be performed.
  • other analysis can be employed to determine a user's context.
  • the system can operate with or without a camera.
  • the system can operate with substantially any input source available, not requiring any particular source to inference about context.
  • there can be integrated accelerometers, microphones, and proximity detectors on small PDA's that give a sense of a user's location and attention.
  • a flow diagram 173 illustrates a decision process for a notification manager in accordance with an aspect of the present invention.
  • one or more notification sources generate notifications, which are received by a notification manager.
  • a context analyzer generates/determines context information regarding the user, which in 176 is received by the notification manager. That is, according to one aspect of the present invention, at 175, the context analyzer accesses a user contextual information profile that indicates the user's current attentional status and location, and/or assesses real-time information regarding the user's current attentional status and location from one or more contextual information sources, as has been described in the previous sections of the description.
  • the notification manager determines which of the notifications to convey to which of the notification sinks, based in part on the context information received from the context analyzer.
  • the notification manager also makes determinations based on information regarding notification parameters of the user as stored by the context analyzer. That is, according to one aspect, in 177, the manager performs a decision-theoretic analysis as to whether a user should be alerted for a given notification, and how the user should be notified.
  • decision-theoretic and/or heuristic analysis, determinations and policies may be employed at 177.
  • Notification parameters regarding the user can be utilized to personalize the analysis by filling in missing values or by overwriting parameters provided in the schema of sources or sinks.
  • Notification preferences can also provide policies ⁇ e.g., heuristic) that are employed in lieu of the decision-theoretic analysis. Based on this determination, the notification manager conveys the notifications to the sinks at 178.
  • the invention is applicable to substantially any type of entity, including users.
  • Other types of entities include agents, processes, computer programs, threads, services, servers, computers, machines, companies, organizations, and/or businesses, for example.
  • the agent for example, may be a software agent, which can be generally defined as a computer program that performs a background task for a user and reports to the user when the task is done or some expected event has taken place.
  • Still other types of entities are encompassed under the invention, as can be appreciated by those of ordinary skill within the art.
  • the context analyzer according to another aspect of the invention can be generalized as a component applicable to substantially any type of entity.
  • notification sinks can generate notifications, alerts and events regarding entities other than users.
  • notification sinks can receive notifications, alerts and events regarding entities other than users.
  • a flow diagram 180 illustrates a decision-theoretic determination, as can be performed by a notification manager in accordance with an aspect of the present invention.
  • one or more notifications are received. Notifications provide information that can be conveyed to a user, via a mode of an associated notification sink.
  • a decision-theoretic analysis is performed for the notifications received at 182, over a number of modes of a number of sinks. The analysis desirably results in a net value of conveying the notification via the modes associated with the sinks. Analysis can be performed utilizing a probabilistic model, such as a Bayesian network.
  • determining the net value of conveying notifications according to the modes of the sinks at 184 involves performing
  • an expected value of the information contained within the notification to the user is determined. This is the value of the information that results to the user if he or she is notified.
  • an expected cost of disruption of conveying the notification to the user is determined. This is the cost of disrupting the user to convey the notification - for example, the user may be busy in a meeting, such that disrupting the user with a notification results in a cost to the user.
  • an expected value of the user independently learning the information contained in the notification, without actually being conveyed the notification is determined.
  • This value can be less than the value determined in 186, since the user may learn the information independently at a later time than if he or she would be notified to the information.
  • an actual cost of communicating the notification to the user is determined. For example, sending a message via a pager may result in a communication charge being incurred by the user from the user's pager company, wherein such pages are charged by the company on a per-page basis.
  • the net value of conveying notifications to the user via the modes of the sinks can be determined at 184 by subtracting from the expected value of information determined in 186, the expected cost of disruption determined in 188, the expected value of the user independently learning the information in 190, and the actual cost of communication in 192.
  • the process proceeds to 196 for such notifications, wherein such notifications are conveyed to the user via the mode of the sink having the highest net value for the notification. Otherwise, for those notifications not having net values greater than the threshold for substantially any mode of substantially any sink, the user is not currently notified of the information contained in such notifications, and the process proceeds to 198 for such notifications, to perform post-processing, to which the process also proceeds from 196 as well.
  • the invention is not limited by the manner by which post-processing is performed at 198.
  • notifications that were conveyed in 196 to the user, assuming that 196 was performed can be deleted.
  • such notifications are deleted upon receiving confirmation that the user has in fact received the notification, from the notification sink to which the notifications were conveyed.
  • the notifications can also be deleted after conveyance if it has been determined that the notification sink to which the notification was conveyed has a transmission reliability for the mode of the sink utilized greater than a threshold value.
  • the process of Fig. 13 can be repeated at predetermined intervals, and/or as new notifications are received.
  • a given notification that may have a net value less than the conveyance threshold now may have a net value greater than the threshold later, such that it is then conveyed.
  • An alternative situation can also be true.
  • the process depicted in Fig. 13 illustrates the manner by which decision-theoretic analysis can be performed to determine whether notifications should be conveyed to the user via a mode of a sink, such that the analysis can be repeated as desired.
  • Fig. 13 has been described as to the performance of a decision-theoretic analysis for a notification over a number of modes of a number of notification sinks.
  • the invention itself is not so limited. For example, there may implicitly be only one such mode for any or all of the sinks. In this manner, the analysis for a notification is performed over the sinks, without explicit regard to the mode.
  • the determination of the net value of the notification as to the mode of the sink can be performed as is described in the next section of the description.
  • a decision-theoretic notification as presented in previous sections of the description can be performed as is described in the following section, although the invention is not so limited.
  • an iterative "greedy" decision-theoretic analysis can be employed.
  • the current context and associated expected value of transmitting an alert are considered.
  • Less approximate, more precise decision-theoretic analyses that perform inferences about the future, that consider a range of future times, contexts, and associated expected values can utilize such models as dynamic Bayesian networks, or approximations of dynamic Bayesian networks referred to as Hidden Markov models (HMM's).
  • HMM's Hidden Markov models
  • a notification manager in one aspect is configured that can shift into less myopic modes based on a consideration of the computation that is now available, or that will be available, per monitoring the status of available computational resources. That is, the invention is not limited to the greedy approach described. Less approximate, less greedy optimizations of ideal time and device for notifications can consider a range of future contexts and associated availabilities of devices, by forecasting the likelihood of these contexts and device availabilities.
  • the expected value of a notification N at time t is can be considered the current value of the notification.
  • the informational value of a notification is considered as being sensitive to the context and to the knowledge of the user.
  • the context includes such contextual information as the location and attentional status of the user, the goals of the user, and the context ⁇ e.g., did the user just open e-mail).
  • the initial value of a notification N in a context C is the value (as, for example, can be measured in dollars) of the notification in the context when the notification is first generated by a source, diminished by the probability that the user is not already familiar with the information.
  • the probability that the user is not familiar with the information is referred to as the novelty of the information. This probability is based on such evidence E as the type of information and the manner the information is distributed ⁇ e.g., a news story becomes known via other channels over time and thus the evidence can include the salience and the age of a news story). If the value of information when it is already known to be zero is considered, the value of a notification is:
  • ValInfo ⁇ N i ) p ⁇ novel ⁇ E)xvalue(N j ,t 0 ) (1)
  • ValInfo ⁇ N i p(novel ⁇ E) x value ⁇ N. , C s , t 0 ) (2)
  • the value of transmitting the notification may change based on the time-dependency of the value:
  • a value function can be represented by time-dependent functions that take as arguments the difference of time or delay between the time an alert is sent or received by the notification manager, and the current time, wherein delay is expressed as t-t ⁇ .
  • Such functions may include, for example, linear, exponential, and sigmoidal functions that indicate the loss of value delay. More complex functions include concatenations of linear, exponential, and sigmoidal functions, such as functions that represent a "shelf life" which refers to the period of time following the time an alert is sent or received where the value does not change, before the value of the information begins to change ⁇ e.g., begins to decay).
  • equation (3) can be rewritten with C ⁇ t), or the context can be stated as always being the current context. Under uncertainty in the context, the different potential contexts are summed over.
  • the expected value of the information is:
  • the expected value of communicating the information with mode M of a device is diminished by the loss of fidelity associated with the rendering and consideration of whether the information has been transmitted to the user when signaled with the mode in context C. It can be assumed for sake of simplicity that the fidelity of the transmission is captured as a variable ranging between zero, for no transmission of the content, to one, for the full transmission of the content.
  • more detailed utility models are considered that capture additional details of the losses of dropping one or more components of the initial content, and the truncation and summarization of the content in various manners ⁇ e.g., the truncation by some total percentage of the full text of an email message — or another approach to summarization - into a smaller, more compact message for display on a limited cell phone display).
  • the fidelity associated with the transmission of the information over mode M of a device is dependent on the context; for example, it may be hard to hear the audio portion of audio content in a noisy environment.
  • the probability that the information has been transmitted to the user may also be considered. This, in the general case, is also dependent on the context. As this dependency is typically more salient than the context-dependency of the fidelity, this can be specified explicitly. Transmission of the information as a probability that the user has received the information is represented as j.(received
  • the expected value of communication of the notification is determined as
  • the expected value of communication as embodied in equations (5) and (6) can in one aspect be employed as the expected value of the information to the user as described in the previous section of the description.
  • the expected value of information can be the expected value without consideration of the fidelity and other parameters - that is, as ExpNalInfo(N().
  • the invention is not limited to these approaches, however.
  • the cost associated with the disruption depends on the mode of the transmission and the context, mostly via the attentional context of the user.
  • the expected cost of disruption of the user for each context can also be measured in dollars in one aspect, equal to the amount a user would be willing to pay to avoid the disruption associated with the transmission of the information via mode M. In the general case, this can also be dependent on the details of the content being transmitted. According to one aspect, however, the different costs under the uncertainty of the context are specifically considered. Thus, an expected cost of disruption for a mode M is
  • the value of signaling a user now with a notification via mode M is the difference between the value and the cost of the information.
  • the dollar cost of the actual communication such as the cost of transmitting the bits, for example, per the fees charged by a service, is also considered. This can be a function of the notification content and the mode selected. This is also referred to as the (actual) communication cost, ComCost(N, ).
  • the (net) value is not zero if the user is not actively signaled with a notification, but that the user may receive the information later when he or she is free to review the information or actively seek the information from a store, such as an e-mail store, or for general purposes, a store of potential notifications that is maintained until the user has an opportunity to review them.
  • a store such as an e-mail store, or for general purposes, a store of potential notifications that is maintained until the user has an opportunity to review them. This is referred to as the expected value of seeking the information contained within the notification
  • ExpNalSeek referred to in the previous section of the description as the expected value of the user independently learning the information without notification.
  • the value can be determined by considering the time until a user will review the information contained in the notification. This time is typically context sensitive, as, for example, the time until a user seeks information from such a store can depend on the location, time of day, and the current focus of attention. It is considered that the novelty of the information may change and maybe a function of the amount of time that the notification has been pending. For simplification, the fidelity can be considered full when the user seeks the information — however, in the general case, the user may be seeking the information through a device that provides lower fidelity. It can also be assumed that the cost of disruption associated with seeking the information is about zero, as the user will be in an attentional state to actively pursue the information.
  • NetExpNalCom for communicating notification N with mode is:
  • the notification is not immediately discarded ⁇ viz., deleted). For example, it cannot be typically assured that the notification has gotten through to the user, once it is rendered. Such assurance is possible, however, if the system has a process in place such as a shared understanding between user and system that, for example, the user causing a cursor to hover over the rendered notification in a desktop scenario is the manner by which for the user to indicate to the system, "yes, I got this," or by automatically monitoring the access of the notification in some other way. An example of the latter is monitoring whether a user has examined the message on his or her cell phone. The reporting of such monitoring can be the confirmation of notification receipt as noted in the previous section of the description.
  • the modes of the sinks are considered as having a context-sensitive transmission reliability (also referred to as transrel) of the mode in that context, transrel( , . That is, for the mode, and for the context, the transmission reliability gives the probability that a user has observed the notification based on that rendering. As has been noted, at times, confirmation that transrel has been 1.0 can be received — for example, with an interaction with a notification or with a mouse over of a notification, such that a user has observed the notification with probability 1.0. At other times, the transmission reliability for the mode and the context can be relied upon.
  • H (N) refers to the alerting history of a specific notification that has been pending in a general, internal in-box.
  • the alerting history indicates a sequence of attempted notifications, wherein H 4 ⁇ N): ⁇ Aj ⁇ N h M,Q, A 2 (N Native M, , A 3 ⁇ N, M,Q, ... A n ⁇ N Cosmetic M, ⁇ (10)
  • A(N ; ,M) refers to an alert about notification N, with mode M.
  • n ,E,e) can be determined. Including this factor appropriately diminishes the expected value of seeing the notification. More specifically, first, an updated ExpValCom and ExpNalSeek are
  • NetExpNalCom is determined in a similar manner as before, but with these new ExpNalCom and ExpNalSeeklnfo values.
  • n ,E,e), generally is updated. According to one aspect of the present invention, this can be determined after new attempts at an alert (notification renderings, or conveyance of a notification) is made, by considering attempts as a Bernoulli trial, for example, as is now described. Given an alerting history,
  • notifications can be chunked - that is, grouped together for transmission as a grouping of notifications via a given mode of a given notification sink - by considering notification sets that include a set of concurrent notifications.
  • NetExp ValCom(N ! ,M k ) E H _ ExpValCom ⁇ N i ,M k )- Exp ValSeekInfo(N ! ) - (15)
  • decision-theoretic policies may be compiled and/or approximated into simpler rales and policies in one aspect. This can utilize formal methods for compiling such decision- theoretic analyses into policies. Furthermore, there are a variety of policies such as heuristic policies, for example, that perform a coarser cost-benefit analysis, as described in more detail below.
  • decision-theoretic policies can be utilized for situations of "pulling information.” That is, when a user requests information from the system, including requests during desktop as well as in mobile situations, the cost of distraction to be zero is considered, and information can be related about the next most valuable notification to send to the user. Such infomiation can be ordered by next most valuable, or can be grouped for cognitive purposes into categories. For example, the next "n" most valuable notifications can be examined, such that a command is related to stream the notifications in this order, or to wait for a request for "next notification" in order of expected utility. Alternatively, information can be related in terms of categories of sources, based, for example, in the order of the source containing a notification with the highest expected utility.
  • Relaying notifications can continue within the source category until reaching a threshold of expected value before moving onto the source containing a notification with the next highest value, and the process is then repeated.
  • information can be relayed by a predefined sequencing of sources ⁇ e.g., voicemail messages first, followed by instant messages, followed by e-mail, and then by financial notifications), and then relaying notifications from each of the sources, sorted by expected utility within the category, until reaching a threshold in expected utility for that category and then proceeding on.
  • the expected value of information can be utilized to tailor high-level summaries of the current situation. For example, there can be reasoning across sources to build a text-to-speech summary of pending notifications for communication of the current notification situation over cell phones.
  • the expected value determinations can be utilized to accomplish caching.
  • the expected value determinations can also be utilized to inform speech recognition systems to listen better, by assuming user's will be most interested in the highest expected value items, to, for example, enhance dialog in mobile and desktop settings.
  • an e-mail summary could be like the following example: "32 unread messages; 9 of high urgency; most urgent from Andy on 'Meeting this afternoon.'"
  • a coarse cost-benefit analysis can be harnessed that bypasses more formal decision-theoretic analyses.
  • policies and associated notification components and interfaces can be viewed as approximate or heuristic versions of the decision-theoretic policies.
  • notifications can be labeled as high, normal, and low urgency (or any range of urgencies) by a source - or by a user-specified notification profile ⁇ e.g., per attributes of the message and/or the message class).
  • a list of conditions can be created as to when the user would likely be in a state to receive notifications and perform coarser monitoring of context to identify situations wherein the user would likely be available to receive notifications with minimal disruption. These states are called “likely free" states.
  • This list can include one or more of the following (and other states):
  • a max deferral time can be set for the urgency level.
  • an exemplary table can be set as follows:
  • the display of notification can be enabled to include multiple, or pooled notifications that have been waiting, so as to send to the user a single notification that contains chunks of grouped notifications.
  • chunking can present chunks of notifications in lists ordered by max priority, max age, or max priority by group, for example. For example, if a likely free state has not been seen and that max deferral time has been reached by a high priority notification, at the time the max deferral has been reached for the high priority notification, information is included about the lower priority notifications that are pending in a grouped notification. This is though the lower priority notifications may not have reached their own max deferral at this time.
  • the probability of free time can be learned within the next x minutes for a user. This can be achieved by learning the frequency of likely free states and the expected time until the next likely free state.
  • the expected time until the next likely free state can be determined from a user's activity and automatically set the max deferral times for notification priority classes so as to enable users to specify instead of a max deferral time, a probability for the priority class that the user will be disturbed. That is, users can specify a target "tolerated probability" of disruption for the priority class and the system can set the max deferral times for the classes. That is, users (or, alternatively, system developers, by default) configure a notification system in a manner such as, "I will tolerate a probability of 0.5 of being disrupted for a high priority notification, a
  • a predetermined area 302 ⁇ e.g., for displaying an output and/or providing for user interaction
  • a desktop screen 300 of a display of a computer ⁇ e.g., laptop computer, desktop computer, or other display
  • the predetermined area 302 is in the upper right-hand of the screen 300, however, it is to be appreciated that other areas of the screen may be employed ⁇ e.g., lower left, right).
  • the area 302 can be a column on the right-hand of the screen 300.
  • the screen 300 is desirably such that a user can control movement of a cursor 304 thereon, as is employed with a graphic users interface.
  • the cursor 304 as illustrated in Fig. 14 is an arrow pointer, however, it is to be appreciated that other cursors can be employed.
  • the predetermined area 302 can be utilized in connection with displaying information in conjunction with various aspects of the present invention.
  • information can refer to a singular piece of information, and/or a plurality of information.
  • the information comprises notification alerts, also referred to as alerts or notifications, as has been described supra.
  • various aspects of the present invention are directed to the display of such information within the predetermined area 302 of the desktop screen 300 as described infra.
  • the desktop screen 300 can be employed by a user for a primary task - for example, working on a word processing document, a spreadsheet workbook, or other application.
  • the information displayed within the area 302 can be unrelated to the primary task, however.
  • the information displayed may be information not requested by the user.
  • the information may alert the user to an e-mail, such that the user, while having requested the e-mail over a predetermined classification threshold ⁇ e.g., information classified according to importance) be conveyed to him or her, has not requested (also referred to as "un-requested") that the e-mail be displayed in the area 302.
  • a predetermined classification threshold e.g., information classified according to importance
  • the screen 300 can be part of a display that is able to provide generalized rendering, including, for example, content formatted in accordance with Hypertext Markup Language (HTML) format.
  • HTML Hypertext Markup Language
  • multiple sources of information are able to send "rich" interfaces, including buttons, links, animations, audio, and so forth. ⁇ e.g., for source branding), such that the information is rendered within constraints and higher-level design conventions or style conventions of the user interface described herein.
  • the invention itself is not so limited.
  • a pulsing aspect of the invention, a stream-cycling aspect of the invention, and a stream-stacking aspect of the invention are described.
  • a system can include a display, a processing system, and a machine-readable medium storing a computer program executed by the system to cause entry into one of the modes.
  • a notification manager can perform switching decisions, for example.
  • the user or the notification manager can in one aspect also make a decision as to switch-able features within a given mode, such as within the pulsing, the stream- cycling, and/or the stream-stacking mode.
  • the presence or absence of audio heralds can also in one aspect be a decision delegated to the user and/or the notification manager.
  • a flow diagram of a method 400 of a pulsing aspect is illustrated in accordance with the present invention.
  • information is received.
  • the information may be un-requested information that is not related to a primary task of the user.
  • the information can include a notification alert, for example, having an assigned classification, such as an importance value associated therewith greater than a threshold, such as defined by a predetermined threshold.
  • the measure of the importance value is not limited by the present invention, nor the threshold.
  • the information is faded into the predetermined area of a display.
  • the information is faded in by displaying the information in the predetermined area and increasing an alpha value ⁇ e.g., intensity value associated with display pixels) of the information as displayed in the predetermined area to a first predetermined level, at a given rate.
  • the first predetermined level can be based on the importance of the information as defined by an importance value. For example, the level can be proportional to the information's importance. Increasing the alpha value of the information increases the opacity of the display of the information in the predetermined area.
  • increasing the alpha value to a level based on the importance of the information means that more important information is displayed with a greater opacity - that is, with less translucency - than less important information, h one aspect, however, the predetermined level is less than 100% — that is, it is less than 100% opacity.
  • an audio herald to alert the user to the information faded into the predetermined area can also be played at 402.
  • the audio herald can be a predetermined sound or sounds, wherein the importance value of the information can be associated with various aspects of the sound ⁇ e.g., volume higher or lower based on importance, more or less sounds based on importance).
  • the length of time can be proportional to the information's importance.
  • the delay is thus desirably the length of time that the information will be displayed to the user.
  • information with a greater importance can be displayed longer than information with a lesser importance.
  • 406, 408, 410 and 412 of the process 400 are performed, although the invention itself is not so limited.
  • a first predetermined user gesture relevant to the fading of the information into the predetermined area of the display is detected.
  • this first gesture can be the movement of the cursor over the predetermined area of the display ⁇ e.g., by a user causing such movement via utilization of a pointing device such as a mouse), although the invention itself is not so limited.
  • Another gesture can include particular speech or voice by the user that is detected.
  • a first action is performed.
  • the action includes increasing the alpha value of the information as displayed in the predetermined area to a second predetermined level greater than the first predetermined level, such as 100%.
  • the first gesture thus can cause the information to become more opaque.
  • more detailed information ⁇ e.g., as related to an alert) is displayed in the predetermined area of the display at 408, in response to the first gesture.
  • a second predetermined user gesture relevant to the fading of the information into the predetermined area of the display is detected.
  • this second gesture can be the movement of the cursor to an area of the display such that the cursor is no longer over the predetermined area of the display ⁇ e.g., by a user causing such movement via utilization of a pointing device such as a mouse or keyboard movement).
  • Another gesture is particular speech of voice by the user that is detected.
  • a second action is performed. The action can include decreasing the alpha value of the information as displayed in the predetermined area back to the first predetermined level, from the second predetermined level it was previously adjusted to in 408.
  • the more detailed information that may have been displayed in the predetermined area of the display in 408 is replaced by the infomiation as was previously faded thereto in 402.
  • the information is faded out from the predetermined area of the display. For example, in one aspect this involves decreasing the alpha value of the information as displayed in the predetermined area at a given rate, and then not displaying the information in the predetermined area any longer.
  • the process depicted in 400 can be repeated, as indicated by 416. That is, new information can be received in 401 , which may have a new importance, such that the new information is faded into the predetermined area of the display in 402.
  • the fading in and out of the information into the predetermined area is such that whatever was already displayed on the predetermined area stays there, as can be appreciated. That is, the information faded into the predetermined area is displayed on top of whatever is already there - the level to which the alpha value of the information faded in is increased thus determines how translucent or opaque the information faded in is, and thus how much of the information can be observed by the user.
  • the information (although not fully propagated within the space) can be observed in partiality.
  • the process described in Fig.15 is referred to as a pulsing aspect since information is "pulsed" to a determined alpha for a determined length of time associated with the classification ⁇ e.g., importance value) of an alert or notification.
  • the pulse 502 has a height 506 representing the alpha value level to which the information as displayed in the predetermined area is increased, a length 504 representing the length of time at which the information is displayed in the predetermined area at this alpha value level, a first slope 508 representing the rate at which the information is faded to this alpha value level, and a second slope 510 representing the rate at which the information is faded from this level.
  • the height 506 and the length 504 are based on the importance of the information being pulsed ⁇ e.g., in one aspect, such that the height is proportional to the importance value).
  • the slope 508 and/or the slope 510 is constant, although the invention itself is not so limited; furthermore, the slopes 508 and 510 can be similar to one another.
  • a tab, button, and/or other item on the display that enables the user to immediately cause the display of the next notification by selecting this item. For example, clicking on a button indicates that the user wants to see the next notification, even if this notification has not reached the importance value or threshold for display on its own. Such a notification, for instance, may not have an importance greater than the threshold for independent display.
  • a flow diagram illustrates a methodology 600 of a stream-cycling aspect in accordance with the present invention.
  • a respective number of different information packets ⁇ e.g., information associated with a notification or alert from a notification source) have an associated display time determined.
  • the display time for an information packet is the length of time at which this information will be displayed in the predetermined area of the display.
  • the length of time is based on the importance of the information, wherein respective information packets are assigned an importance value.
  • the display time may be proportional to the importance, although the invention is not so limited.
  • the information may be un-requested information unrelated to a primary task of the user.
  • the information can include a notification alert.
  • a periodicity is determined for respective information packets.
  • the periodicity for the information packet is the number of times that the information will be displayed in the predetermined area of the display over a given time period.
  • the periodicity can be based on classification(s) and displayed according to a predetermined protocol ⁇ e.g., proportionality associated with the classification(s)).
  • the periodicity is based on the importance of the information; for example, it maybe proportional to the importance value. Thus, more important information may be displayed more often than less important information during the given time period.
  • respective infomiation packets may have a periodicity about equal to one — that is, each information can be displayed one time for the given time period.
  • respective information packets are displayed in the predetermined area of the display a number of times about equal to its periodicity, for a length of time about equal to its display time.
  • a first information packet can be displayed, then the second information packet, and so forth, until substantially all the information has been displayed during this given time period.
  • respective information can be faded into and then out of the predetermined area, with a delay in- between about equal to the display time, as has been described in the previous section of the description ⁇ e.g., by raising the alpha value, delaying, and then lowering the alpha value).
  • a first predetermined level to which the alpha value of an information packet is increased can be based on the information's importance, as has also been described. That is, the alpha value is ultimately set to the first predetermined level for a length of time about equal to the display time.
  • an audio herald to alert the user to respective information displayed is also played, or alternatively for information exceeding a threshold, such as a predetermined threshold.
  • the audio herald can be a predetermined sound or sounds as described above.
  • 606, 608, 610 and 612 of the process 600 are performed, although the invention itself is not so limited.
  • a first predetermined user gesture relevant to a current information packet being displayed in the predetermined area of the display is detected.
  • the first gesture can be the movement of the cursor over the predetermined area of the display (e.g., by a user causing such movement via utilization of a pointing device such as a mouse).
  • Another gesture can include particular speech or voice by the user that is detected and/or processed.
  • a first action is performed. In one aspect, the action includes "holding" the current information being displayed in the predetermined area, such that substantially no other information is displayed in the predetermined area until the second gesture is detected in 610.
  • the first action performed in 608 includes increasing the alpha value of the current information as displayed in the predetermined area to a second predetermined level greater than the first predetermined level, such as 100%), for example.
  • the first gesture thus causes the current information displayed to become more opaque.
  • more detailed information ⁇ e.g., as related to an alert) is displayed in the predetermined area of the display in 608, in response to the first gesture.
  • a second predetermined user gesture relevant to the current information being displayed in the predetermined area of the display is detected.
  • this second gesture can be the movement of the cursor to an area of the display such that the cursor is no longer over the predetermined area of the display (e.g., by a user causing such movement via utilization of a pointing device such as a mouse).
  • Another gesture is particular speech of the user that is recognized.
  • a second action is performed.
  • the second action includes the
  • the action can include decreasing the alpha value of the information as displayed in the predetermined area back to the first predetermined level, from the second predetermined level it was previously increased or set to in 608.
  • the more detailed information that may have been displayed in the predetermined area of the display in 608 is replaced by the information as was previously displayed in 602.
  • the information is updated.
  • 614 can include adding new information, and deleting old information. Deletion of information may, for example, be based on the lowest priority information, information that has already been displayed a predetermined number of times, and so forth. Similarly, the new information that is added can include that for which the importance exceeds a predetermined threshold relating to the importance of the information.
  • the process 600 of Fig. 17 is then repeated, as indicated by 616. Thus, in 601 , a new display time for the respective information packets as has been updated is determined.
  • FIG. 18 a diagram 700 of a stream-cycling wheel 702 is illustrated, according to an aspect of the present invention.
  • the wheel 702 has a number of slots 1 through N, N being an integer, 704-708.
  • the slot 704, for example, corresponds to an instance of a portion of information being displayed during a given time period.
  • Respective slots have a time delay corresponding to how long the portion of information is displayed during the given time period.
  • the slot 706 has a time delay represented by the length of the arc 710, wherein slots with longer arcs have greater corresponding time delays. Respective information is allocated to a number of slots about equal to the periodicity of the information. Thus, information with a periodicity of one is allocated to one slot. It is noted that the number of slots and the given time period can both be dynamic, such that when the information is updated, the number of slots can increase and decrease about equal to the sum total of the periodicities of substantially all the information, and such that the given time period over which substantially all the instances of the information are displayed can be about equal to the sum total of the time delays of the instances.
  • the wheel 702 rums, as indicated by the arrow 712, such that a viewing arrow 714 pointing to the wheel 702 points to different slots of the wheel 702 over the given time period.
  • the slot 704 to which the arrow 714 is pointing contains the information that is to be currently displayed in the predetermined area of the display.
  • one portion of information that can be stream-cycled is a summary page, which is infomiation that contains a high- level summary of the most critical notifications in a current cycle, or, more generally of greater amounts of information as might be drawn from a larger notification store. Selection of a particularly referenced notification within this summary by the user causes the immediate display of the notification.
  • each summary page there is more than one summary page, wherein respective pages can contain clusters of sets of information, including related information that is chunked - for example, a summary page for substantially all communications ⁇ e.g., instant messages, e-mail, incoming telephone calls), and/or a summary for substantially all automated services.
  • the information presented by stream-cycling can be displayed on a separate display. In the following section of the description, a stream-stacking aspect of the present invention is described. The diagram of Fig.
  • the display 800 includes a main notification window 802, a journal window 804, and a number of source summary windows 806, substantially all of which are said to be displayed in a predetermined area of the display 800 (e.g., a screen thereof).
  • information sources such as the notification sources as have been described previously.
  • Respective information sources generate information, such as un-requested information that can include information unrelated to a primary task of the user as has been described, and displays the information in a corresponding source summary window 806.
  • the information can comprise a notification alert.
  • Respective portions of information can be assigned an importance value, the measure of which is not limited by the invention.
  • information that has an importance greater than a threshold is displayed in a stream-cycling manner in the main notification window 802.
  • the stream- cycling can be in accordance with the stream-cycling aspect of the invention that has been described, wherein respective information is faded into the main notification window 802 for a length of time, and then faded out.
  • a threshold such as a predetermined threshold
  • Displaying the information in a stream-cycling manner is also referred to herein as display-streaming the information.
  • the information may be a more detailed version thereof than that which is displayed in one of the source summary windows 806, in one aspect.
  • information that has been display-streamed in the main notification window 802 is journaled in the journal window 804, according to a predetermined criteria. For example, when a particular portion of information has been displayed in the main notification window 802, a one- line summary of the information can be added to the journal window 804, referred to herein genetically as a journal entry, such that the window 804 displays a list of such summaries.
  • the list of the window 804 in one aspect is scrollable by the user, so that the user is able to examine substantially all the information that has already been display-streamed in the main notification window 802.
  • the predetermined criteria limiting the information that is journaled, and/or added, to the journal window 804 is information that has not been indicated by the user as having been viewed by him or her.
  • the user can indicate that information currently being displayed in the main notification window 802 has been viewed by him or her by performing a predetermined user gesture, such as causing movement of a cursor over the main notification window 802, which is also referred to as hovering.
  • the predetermined criteria for joumaling can also be user controlled.
  • the journal is employed to capture the full history of attempts to relay information to a user.
  • a journal entry may include the source of the information, a high-level title and/or summary, and/or information about actions that may have been undertaken with respect to the notification or alert.
  • An action can be performed in response to a predetermined user gesture relevant to the information being displayed in the main notification window 802, the source summary windows 806, and/or journaled in the journal window 804.
  • the predetermined user gesture can be causing movement of a cursor over the main notification window 802, the source summary windows 806, or a journal entry in the journal window 804, and selecting the information displayed therein. Selecting can be caused by the user by clicking a suitable input device button, although the invention is not so limited.
  • the action performed in response to this gesture is not limited by the invention. However, in one aspect, the action includes displaying further information, such as more detailed infomiation, related to the information that has been the subject of the relevant gesture.
  • FIG. 20 An example of this is depicted in the diagram of Fig. 20.
  • the user has caused movement of the cursor 904, illustrated in Fig. 20 as a pointer although the invention is not so particularly limited, over a source summary window 904 of the source summary windows 806, and is assumed to have selected the information being displayed in the source summary window 904.
  • the source of info ⁇ nation for the window 904 is referred to as a user-desired source, since it is the source that the user has performed a gesture relevant thereto.
  • an action has been performed, specifically, the display of a window 906, which can include more detailed information regarding the information being displayed in the source summary window 904. It is noted that while the example of Fig.
  • the invention itself is not so limited, and the gesture could also be relevant to either the information being displayed in the main notification window 802, or one of the journal entries journaled in the journal window 804.
  • the stream-stacking aspect of the invention as has been described and as has been illustrated in conjunction with Figs. 19 and 20 is amenable to various extensions.
  • there can be a "simple mode" toggle in which one or more of the respective windows 802, 804 and 806 are displayed.
  • the number of source summary windows 806 can be increased or decreased by the user.
  • the source summary windows 806 can also in one aspect be minimized so that the information displayed therein is an icon representing the information sources for the windows 806, such that user-caused cursor hovering over a particular of the windows 806 causes display of the information generated by the corresponding source.
  • a flow diagram illustrates a methodology 1000 of a stream-stacking aspect of the present invention.
  • the methodology 1000 can incorporate aspects of the stream-stacking as it has been described in conjunction with Figs. 19 and 20.
  • information from a number of sources is displayed.
  • the information from respective sources is displayed in a corresponding source-summary window.
  • the information can be un-requested information unrelated to a primary task of the user.
  • information that has an importance value greater than a threshold, such as a predetermined threshold is display-streamed in a main notification window.
  • the information as displayed in the main notification window can in one aspect be more detailed than as it is displayed in the source-summary window corresponding to the source of the information.
  • the information that has been display-streamed in the main notification window is journaled in the journal window, such as by a journal entry being added thereto, according to a predetermined criteria.
  • the user is enabled to have an action performed relevant to substantially any information being displayed in substantially any of the source- summary windows, the main notification window, and/or journaled in the journal window, by performing a predetermined user-gestured as to the particular (user-desired) information.
  • a user gesture is detected as to particular information that is being displayed in one of the source-summary windows, the main notification window, and/or which has a journal entry in the journal window.
  • an action is performed that is relevant to this information.
  • a more detailed version of the information can be displayed in one aspect of the present invention.
  • the various aspects of the present invention as has been described in this section of the description is referred to as a stream-stacking since information can be both "streamed" in the main notification window, as well as is stacked in both the source summary windows and the journal window.
  • a user is able to leam of important information by referencing the main notification window, and is able to examine past information that has been displayed in the main notification window by referring to corresponding journal entries for this information in the journal window.
  • the user can also observe the current information being generated by a given source, such as a notification source, by referencing the source summary window for that source.
  • a given source such as a notification source
  • the information of the source summary windows can be displayed regardless of its importance, whereas more important information is generally displayed in the main notification window and j oumaled in the journal window.
  • high-level summary information is associated with respective sources.
  • an email-related source may display information about the overall status of information from that source — such that there are ten unread messages with a given priority, and the highest priority message is from a particular user regarding a particular subject matter. Clicking or hovering on the source can then cause the display of a broader user interface for the source application, the most recent notification, and so forth.
  • information is streamed or cycled within each source display, such as independent versions of the stream-cycling aspects of the invention described in the previous section of the description.
  • clicking or otherwise selecting a particular source can cause display of the details of the source information, such that this information is focused. Subsequent selection of the notification can thus cause display of even further details of this information, and/or a broader user interface for this source.
  • the user causing a hovering of the cursor over a source in the stream-stacking mode can be a signal to the system to provide more detailed information about the summary, that can appear in a pop-up window, as has been described.
  • the user causing the hovering of the cursor over a window in this aspect is utilized as an implicit request from the user for the display of more details about the notification content. For example, if there is a weather report, cursor hovering is a manner for the user to ask for more details on the weather, such as humidity, five-day forecast, and so forth.
  • gestures can be detected as well in accordance with the present invention.
  • the user positioning the cursor over information that is being streamed, and then selecting the information can be employed in different manners.
  • Selection of Universal Resource Locator (URL) addresses provided in the display may cause access of the information referred to by these addresses, for instance.
  • Clicking in nonspecific regions of an information display asking a question ⁇ e.g., "Shall I schedule that for you?") can as another example be taken as an assumed "yes” acknowledging the user's intention to receive a service, while the default of no selection can be determined as a "no" answer.
  • user gestures utilizing input devices such as the keyboard or the mouse within some time after a notification appears can be provided by the user to convey "Tell me more about this notification.”
  • a user gesture such as a wiggle of a pointing device like a mouse or the moving of the cursor into a predefined comer of the display can be utilized for the user to convey to the system, "What was that?"; “Show that to me again”; or, "Tell me more about this", depending on the initial notification conveyed to the user.
  • the notification was an audio herald
  • a user gesture ⁇ e.g., such as in a comer of the display
  • the user asking "What was that?" leading to the display of the information in a notification window, in accordance with a pulsed mode as has been described.
  • Gestures can also be employed in human-computer interactions to indicate to the notification manager, or more explicitly, to gather info ⁇ nation that is relayed to the notification manager, that the user has seen a notification. For example, the user may cause the cursor to hover over a notification within some time frame after the notification has been displayed, as a manner to indicate to the notification system that the user has seen this notification. Thus, the system then can determine not to re- attempt relaying this notification to the user. A more complex interaction can also provide this indication, such as the user selecting a link presented in the window.
  • notification summaries can be stored in a notification journal in the stream-stacking mode of the invention. These can be organized by time, notification source, message class, and so forth, and enable users to revisit or review notifications that may have been missed earlier. Selecting a journal entry thus enables users to redisplay the notification.
  • audio heralds may be utilized for announcing the display of notifications that exceed a threshold (such as a predetermined threshold), for example, and can be employed to further call the user's attention to the notifications.
  • a threshold such as a predetermined threshold
  • different sounds can be associated with different types of notifications. For example, a scheduling-related notification may have a different sound than an e-mail-related notification.
  • the invention is not limited to text and/or text and graphics.
  • the information can be displayed graphically, wherein different shapes and colors are utilized to indicate the nature and priority of information.
  • a system can include a display, a processing system, and a machine-readable medium storing a computer program executed by the processor to cause entry into one of the modes, such as the scope mode.
  • a notification manager can make the decision to switch modes, for example.
  • FIG. 23 different shapes and colors are utilized to indicate the nature and priority of information.
  • a circular display object 1100 ⁇ e.g., wheel
  • Respective parts can be a different color, and indicate a different type or source of information.
  • Objects within respective parts of the display object 1100 can represent notifications, priorities, and/or events from the source of information of the respective part, and/or of the type of information of the respective part. The closer the objects are to the center of display object 1100, the more important they are - that is, notifications, messages and/or other type of information that have been assigned an importance value.
  • concentric circles within the wheel can in one aspect demarcate different priority levels.
  • Hovering over an object with a cursor can cause textual information regarding that object to be displayed.
  • Hovering over a portion of the display object 1100 (but not over an object within the display object) with a cursor can cause textual information indicating the type of information or the source of information for that portion of the display object 1100.
  • the textual information can be displayed as a tool tip, for example.
  • Fig. 23 and the following discussion are intended to provide a brief, general description of a suitable computing environment in which the various aspects of the present invention may be implemented. While the invention has been described above in the general context of computer-executable instructions of a computer program that runs on a computer and/or computers, those skilled in the art will recognize that the invention also may be implemented in combination with other program modules. Generally, program modules include routines, programs, components, data structures, etc. that perform particular tasks and/or implement particular abstract data types.
  • inventive methods may be practiced with other computer system configurations, including single-processor or multiprocessor computer systems, minicomputers, mainframe computers, as well as personal computers, hand-held computing devices, microprocessor-based or programmable consumer electronics, and the like.
  • the illustrated aspects of the invention may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. However, some, if not all aspects of the invention can be practiced on stand-alone computers.
  • program modules may be located in both local and remote memory storage devices.
  • an exemplary system for implementing the various aspects of the invention includes a computer 1220, including a processing unit 1221, a system memory 1222, and a system bus 1223 that couples various system components including the system memory to the processing unit 1221.
  • the processing unit 1221 may be any of various commercially available processors. It is to be appreciated that dual microprocessors and other multi-processor architectures also may be employed as the processing unit 1221.
  • the system bus may be any of several types of bus structure including a memory bus or memory controller, a peripheral bus, and a local bus using any of a variety of commercially available bus architectures.
  • the system memory may include read only memory (ROM) 1224 and random access memory (RAM) 1225.
  • ROM read only memory
  • RAM random access memory
  • a basic input/output system (BIOS) containing the basic routines that help to transfer information between elements within the computer 1220, such as during start-up, is stored in ROM 1224.
  • the computer 1220 further includes a hard disk drive 1227, a magnetic disk drive 1228, e.g., to read from or write to a removable disk 1229, and an optical disk drive 1230, e.g., for reading from or writing to a CD-ROM disk 1231 or to read from or write to other optical media.
  • the hard disk drive 1227, magnetic disk drive 1228, and optical disk drive 1230 are connected to the system bus 1223 by a hard disk drive interface 1232, a magnetic disk drive interface 1233, and an optical drive interface 1234, respectively.
  • the drives and their associated computer-readable media provide nonvolatile storage of data, data structures, computer-executable instructions, etc. for the computer 1220.
  • computer-readable media refers to a hard disk, a removable magnetic disk and a CD
  • other types of media which are readable by a computer such as magnetic cassettes, flash memory cards, digital video disks, Bernoulli cartridges, and the like, may also be used in the exemplary operating environment, and further that any such media may contain computer-executable instructions for performing the methods of the present invention.
  • a number of program modules may be stored in the drives and RAM 1225, including an operating system 1235, one or more application programs 1236, other program modules 1237, and program data 1238. It is noted that the operating system 1235 in the illustrated computer may be substantially any suitable operating system.
  • a user may enter commands and information into the computer 1220 through a keyboard 1240 and a pointing device, such as a mouse 1242.
  • Other input devices may include a microphone, a joystick, a game pad, a satellite dish, a scanner, or the like.
  • These and other input devices are often connected to the processing unit 1221 through a serial port interface 1246 that is coupled to the system bus, but may be connected by other interfaces, such as a parallel port, a game port or a universal serial bus (USB).
  • a monitor 1247 or other type of display device is also connected to the system bus 1223 via an interface, such as a video adapter 1248.
  • computers typically include other peripheral output devices (not shown), such as speakers and printers.
  • the computer 1220 may operate in a networked environment using logical connections to one or more remote computers, such as a remote computer 1249.
  • the remote computer 1249 may be a workstation, a server computer, a router, a peer device or other common network node, and typically includes many or all of the elements described relative to the computer 1220, although only a memory storage device 1250 is illustrated in Fig. 23.
  • the logical connections depicted in Fig. 23 may include a local area network (LAN) 1251 and a wide area network (WAN) 1252.
  • LAN local area network
  • WAN wide area network
  • Such networking environments are commonplace in offices, enterprise- wide computer networks, Intranets and the Internet.
  • the computer 1220 When employed in a LAN networking environment, the computer 1220 may be connected to the local network 1251 through a network interface or adapter 1253.
  • the computer 1220 When utilized in a WAN networking environment, the computer 1220 generally may include a modem 1254, and/or is connected to a communications server on the LAN, and/or has other means for establishing communications over the wide area network 1252, such as the Internet.
  • the modem 1254 which may be internal or external, may be connected to the system bus 1223 via the serial port interface 1246.
  • program modules depicted relative to the computer 1220, or portions thereof may be stored in the remote memory storage device. It will be appreciated that the network connections shown are exemplary and other means of establishing a communications link between the computers may be employed.
  • the present invention has been described with reference to acts and symbolic representations of operations that are performed by a computer, such as the computer 1220, unless otherwise indicated. Such acts and operations are sometimes referred to as being computer-executed. It will be appreciated that the acts and symbolically represented operations include the manipulation by the processing unit 1221 of electrical signals representing data bits which causes a resulting transformation or reduction of the electrical signal representation, and the maintenance of data bits at memory locations in the memory system (including the system memory 1222, hard drive 1227, floppy disks 1229, and CD-ROM 1231 ) to thereby reconfigure or otherwise alter the computer system's operation, as well as other processing of signals.
  • the memory locations wherein such data bits are maintained are physical locations that have particular electrical, magnetic, or optical properties corresponding to the data bits.
  • This invention has industrial applicability in the area of computers, computer software and information technologies.

Abstract

La présente invention concerne un système (10) et un procédé (170, 173, 180, 400, 600, 1000) permettant de diriger diverses informations associées à une ou plusieurs sources de notification (26-28) vers un ou plusieurs collecteurs d'avis (36-38), via une architecture de plate-forme d'avis (10). Cette architecture (10) comprend un analyseur de contextes (22) qui détermine l'état de l'utilisateur, notamment sa position et son degré de concentration, l'état de l'utilisateur étant utilisé par un gestionnaire d'avis (24) pour prendre les décisions qui permettent de savoir quand, comment et quelles sont les informations produites par les sources d'avis (26-28) qui doivent être acheminées aux collecteurs d'avis (36-38), par exemple. Ces décisions incluent une analyse coûts-avantages dans laquelle l'importance est accordée au fait de savoir si les avantages de transmettre un avis à l'utilisateur sont moins importants que le coût du dérangement causé à l'utilisateur. Des règles théoriques décisionnelles (177, 180) et/ou règles heuristiques (177) quelque peu moins formelles peuvent être utilisées pour valider le procédé de prise de décision dans le gestionnaire d'avis (24).
PCT/US2001/008711 2000-03-16 2001-03-16 Architecture de plate-forme d'avis WO2001069387A2 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
JP2001568198A JP5243679B2 (ja) 2000-03-16 2001-03-16 通知プラットフォームアーキテクチャ
AU2001249261A AU2001249261A1 (en) 2000-03-16 2001-03-16 Notification platform architecture
CN01809514A CN100594701C (zh) 2000-03-16 2001-03-16 一种通知系统
US10/220,419 US7243130B2 (en) 2000-03-16 2001-03-16 Notification platform architecture
EP01922463A EP1264238A2 (fr) 2000-03-16 2001-03-16 Architecture de plate-forme d'avis
US09/881,502 US20020087649A1 (en) 2000-03-16 2001-06-14 Bounded-deferral policies for reducing the disruptiveness of notifications
US09/882,857 US8701027B2 (en) 2000-03-16 2001-06-15 Scope user interface for displaying the priorities and properties of multiple informational items
US10/464,184 US7634528B2 (en) 2000-03-16 2003-06-18 Harnessing information about the timing of a user's client-server interactions to enhance messaging and collaboration services
US10/609,818 US7565403B2 (en) 2000-03-16 2003-06-30 Use of a bulk-email filter within a system for classifying messages for urgency or importance
US10/610,487 US7743340B2 (en) 2000-03-16 2003-06-30 Positioning and rendering notification heralds based on user's focus of attention and activity
US10/611,491 US7444383B2 (en) 2000-06-17 2003-06-30 Bounded-deferral policies for guiding the timing of alerting, interaction and communications using local sensory information
US11/749,508 US7975015B2 (en) 2001-03-16 2007-05-16 Notification platform architecture
US12/476,195 US8019834B2 (en) 2000-03-16 2009-06-01 Harnessing information about the timing of a user's client-server interactions to enhance messaging and collaboration services

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
US18980100P 2000-03-16 2000-03-16
US60/189,801 2000-03-16
US21229600P 2000-06-17 2000-06-17
US21229300P 2000-06-17 2000-06-17
US09/596,364 US6601012B1 (en) 2000-03-16 2000-06-17 Contextual models and methods for inferring attention and location
US09/596,364 2000-06-17
US09/596,365 2000-06-17
US09/595,401 2000-06-17
US09/596,365 US7249159B1 (en) 2000-03-16 2000-06-17 Notification platform architecture
US09/595,401 US7417650B1 (en) 2000-03-16 2000-06-17 Display and human-computer interaction for a notification platform
US60/212,293 2000-06-17
US09/596,348 2000-06-17
US09/596,348 US6513026B1 (en) 2000-06-17 2000-06-17 Decision theoretic principles and policies for notification
US60/212,296 2000-06-17

Related Child Applications (9)

Application Number Title Priority Date Filing Date
US10/220,550 Continuation-In-Part US8024415B2 (en) 2000-03-16 2001-03-16 Priorities generation and management
US10/220,419 A-371-Of-International US7243130B2 (en) 2000-03-16 2001-03-16 Notification platform architecture
PCT/US2001/008710 Continuation-In-Part WO2001069432A2 (fr) 2000-03-16 2001-03-16 Production et gestion de priorites
US09/881,502 Continuation-In-Part US20020087649A1 (en) 2000-03-16 2001-06-14 Bounded-deferral policies for reducing the disruptiveness of notifications
US09/882,857 Continuation-In-Part US8701027B2 (en) 2000-03-16 2001-06-15 Scope user interface for displaying the priorities and properties of multiple informational items
US10220419 A-371-Of-International 2002-08-30
US10/464,184 Continuation-In-Part US7634528B2 (en) 2000-03-16 2003-06-18 Harnessing information about the timing of a user's client-server interactions to enhance messaging and collaboration services
US10/609,818 Continuation-In-Part US7565403B2 (en) 2000-03-16 2003-06-30 Use of a bulk-email filter within a system for classifying messages for urgency or importance
US10/610,487 Continuation-In-Part US7743340B2 (en) 2000-03-16 2003-06-30 Positioning and rendering notification heralds based on user's focus of attention and activity

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WO2001069387A8 WO2001069387A8 (fr) 2001-12-06
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JP (1) JP5243679B2 (fr)
CN (3) CN1591398B (fr)
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