JP2012014542A - Information system, core server, service providing method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that any service is not provided when a service that satisfies restrictions can not be selected.SOLUTION: A core server includes: a restriction satisfaction information storage section capable of storing one or more restriction satisfaction information items each having a service identifier, restriction information and adaptation information; a core server receiving section for receiving a service request from a terminal device; a restriction judging section for judging whether or not restriction information acquired using a service identifier contained in a service request is satisfied; an adaptation processing section for performing adaptation processing indicated by the adaptation information to satisfy the restrictions in the case where it is judged that the restriction information is not satisfied; a service server determination section for determining a service server capable of providing a service; and a core server transmitting section for transmitting to the determined service server a service request reflected with a result of performing the adaptation processing. Even in the case where a service satisfying given restrictions can not be selected, adaptation processing that is processing for satisfying the given restrictions is performed by the core server, thereby providing services.

Description

  The present invention relates to an information system or the like that provides a service so as to satisfy given constraints.

  Conventionally, in service cooperation, there has been a service selection control technique capable of selecting a service that increases user satisfaction without burdening the user (see Patent Document 1). This service selection control technique is a service selection control method for controlling service selection when selecting and providing an arbitrary service from one or a plurality of service scenarios or service components that can be used from both a communication network and an information network. An evaluation calculation step for calculating evaluation value information of each service scenario or service component, an evaluation value storage step for storing evaluation value information, and evaluation value information with reference to evaluation value information at the time of service selection. A service selection step of detecting a high service scenario or service component.

  Conventionally, there has been a service composition system that can efficiently perform service composition (see Patent Document 2). This service composition system is a system that additionally registers a service element that mediates between a service composition apparatus and a service element as an available interface in the service element when the service composition apparatus and the service element cannot be matched. As a result, after that, there is no need to search for a service element that functions as a mediation service element again in the case of similar inconsistencies, so that service composition can be performed efficiently.

JP 2008-160198 A (first page, FIG. 1 etc.) JP-A-2005-71052 (first page, FIG. 1 etc.)

However, in the conventional technology, in an information system that selects a service that satisfies a constraint given by a large number of services, there is a problem that a service is not provided when a service that satisfies the constraint cannot be selected.
Accordingly, an object of the present invention is to provide a service by performing an adaptive process, which is a process that satisfies a given constraint, even if a service that satisfies the given constraint cannot be selected in an information system. And

  The information system according to the first aspect of the present invention is an information system having one or more terminal devices, one or more service servers, and one or more core servers, wherein the terminal device is a service having a service identifier for identifying a service. A terminal reception unit that receives a service request that is a request, a terminal transmission unit that transmits a service request to a core server, a terminal reception unit that receives a service result in response to transmission of the service request, and a terminal reception unit A terminal output unit for outputting a service result, wherein the service server stores one or more processing units for performing the service, and a service server receiving unit that receives a service request from the core server. In accordance with the service request received by the service server and the service server receiver, A service unit that acquires a service result and a service server transmission unit that transmits a service result of the service unit. The core server includes a service identifier that identifies the service, and constraint information that is information related to a service constraint. , A constraint satisfaction information storage unit that can store one or more constraint satisfaction information having adaptation information that is information for satisfying the constraint when the constraint is not satisfied, and a core server that receives a service request from the terminal device A constraint determination unit for acquiring constraint information from the constraint satisfaction information storage unit using the service identifier included in the service request and determining whether the constraint specified by the constraint information is satisfied; and a constraint determination unit Is determined to satisfy the constraints, the service identifier is used to obtain adaptation information from the constraint satisfaction information storage, and the adaptation specified by the adaptation information An adaptive processing unit that performs constraints to satisfy the constraints, a service server determination unit that determines a service server that can provide a service identified by a service identifier included in the service request, and a service determined by the service server determination unit The information system includes a core server transmitting unit that transmits a service request reflecting a result of the adaptive processing performed by the adaptive processing unit to the server.

  With this configuration, even when a service that satisfies a given constraint cannot be selected, the service can be provided by performing an adaptive process that is a process that satisfies the given constraint.

  The information system according to the second aspect of the present invention is a method for checking whether or not the constraint information satisfies the constraint identification information for identifying the constraint and the constraint identified by the constraint identification information. The constraint judgment unit obtains the test information paired with the service identifier included in the service request from the constraint satisfaction information storage unit, performs the test according to the test information, and is specified by the constraint specifying information. It is an information system that determines whether or not a constraint is satisfied.

  With this configuration, even when a service that satisfies a given constraint cannot be selected, the service can be provided by performing an adaptive process that is a process that satisfies the given constraint.

  In the information system of the third invention, the service identifier of the service request is a composite service including a plurality of services, and the core server identifies the composite service. A composite service information storage unit that stores composite service information that associates the composite service identifier to be associated with two or more atomic service identifiers that identify two or more atomic services included in the composite service, and a constraint determination unit When the service identifier included in the service request is a composite service identifier, two or more atomic service identifiers corresponding to the composite service identifier included in the service request are acquired from the composite service information storage unit, and each of the two or more atomic The constraint information that is paired with the service identifier is acquired from the constraint satisfaction information storage, and the constraints specified by the constraint information If the constraint determination unit determines that the constraint is not satisfied, the adaptation processing unit acquires the adaptation information paired with the atomic service identifier that does not satisfy the constraint from the constraint satisfaction information storage unit, This is an information system that satisfies the constraints by performing an adaptive process specified by the adaptive information.

  With this configuration, even in the case of a composite service, even when a service that satisfies the given constraint cannot be selected, the composite service can be provided by performing an adaptive process that is a process that satisfies the given constraint.

  The information system according to the fourth aspect of the present invention provides the service identifier that the service request has, or the service identifier that the service request has, which is a composite service identifier. Are two or more atomic service identifiers that are abstract service identifiers indicating the function of the service, and the service server determination unit includes the abstract service identifier and one or more specific items that realize the service identified by the abstract service identifier. Service server management information capable of storing one or more service server management information having a concrete service identifier for identifying a service and a service server identifier for identifying a service server that performs the service identified by the concrete service identifier for each concrete service identifier Storage means and abstract services included in service requests A service identifier acquisition unit that acquires one concrete service identifier from one or more concrete service identifiers that realize a service identified by a bespoke child, and a service server identifier that is paired with the concrete service identifier acquired by the service identifier acquisition unit And the core server transmission unit reflects the result of the adaptation processing performed by the adaptation processing unit on the service server identified by the service server identifier obtained by the service server identifier obtaining unit. An information system for transmitting a service request.

  With this configuration, even when an execution of an abstract service is instructed and a concrete service that satisfies a given constraint cannot be selected, an abstract service is provided by performing adaptive processing that is a process that satisfies the given constraint. Can be done.

  In the information system of the fifth aspect of the invention, the restriction information is external restriction information that is information relating to restrictions indicating that two or more services do not operate at the same time, or 2 When the service identifier included in the service request is a composite service identifier, the constraint determination unit includes two or more corresponding to the composite service identifier. Is obtained from the composite service information storage unit and determines whether two or more atomic service identifiers satisfy the constraint indicated by the external constraint information.

  With this configuration, even when the constraint is a constraint between a plurality of services, even when a service that satisfies the given constraint cannot be selected, the composite service is provided by performing adaptive processing that is a process that satisfies the given constraint. Can be done.

  According to the information system of the present invention, even when a service that satisfies a given constraint cannot be selected, the service can be provided by performing an adaptive process that is a process that satisfies the given constraint.

Conceptual diagram of the information system in the present embodiment Block diagram of the information system Flow chart explaining operation of the information system Flow chart explaining operation of the service server Flow chart explaining operation of the core server Flow chart for explaining the operation of the service request process Flow chart for explaining the operation of the service request process A flowchart for explaining the operation of the service server determination process Figure showing the same constraint satisfaction information management table Figure showing the same composite service information management table Figure showing the service server management information management table Overview of the computer system Block diagram of the computer system

  Hereinafter, embodiments of an information system and the like will be described with reference to the drawings. In addition, since the component which attached | subjected the same code | symbol in embodiment performs the same operation | movement, description may be abbreviate | omitted again.

  (Embodiment 1)

  In the present embodiment, a description will be given of an information system that determines whether or not a given constraint is met, and performs an adaptive process so as to match if it does not match.

  FIG. 1 is a conceptual diagram of the information system in the present embodiment. The information system includes one or more terminal devices 1, one or more service servers 2, and one or more core servers 3. Further, the one or more terminal devices 1, the one or more service servers 2, and the one or more core servers 3 can communicate with each other via a network 4 such as the Internet, a LAN, or a WAN.

  In the present embodiment, when there are two or more terminal devices 1, they are usually dispersed in two or more countries. However, two or more terminal devices 1 may exist in one country. In addition, when there are two or more service servers 2, they are usually distributed in two or more countries. However, two or more service servers 2 may exist in one country. Further, in the present embodiment, when there are two or more core servers 3, the two or more core servers 3 are usually distributed in two or more countries. However, two or more core servers 3 may exist in one country. The terminal device 1 may be a so-called personal computer, portable terminal (including a mobile phone), navigation terminal, television terminal, or the like.

  FIG. 2 is a block diagram of the information system in the present embodiment.

  The terminal device 1 includes a terminal reception unit 11, a terminal transmission unit 12, a terminal reception unit 13, and a terminal output unit 14.

  The service server 2 includes a processing means storage unit 21, a service server reception unit 22, a service unit 23, and a service server transmission unit 24.

  The core server 3 includes a constraint satisfaction information storage unit 31, a composite service information storage unit 32, a core server reception unit 33, a constraint determination unit 34, an adaptive processing unit 35, a service server determination unit 36, and a core server transmission unit 37. The service server determination unit 36 includes a service server management information storage unit 361, a service identifier acquisition unit 362, and a service server identifier acquisition unit 363.

  The terminal reception unit 11 configuring the terminal device 1 receives a service request. A service request is a request for a service having a service identifier that identifies the service. The service request may be a service request having a service identifier for identifying a composite service in which two or more services are combined. A service request usually also has a user identifier. Note that the user identifier is held in advance by the terminal device 1. The user identifier is, for example, information input when the user logs in. The user identifier may be anything as long as it is information that can identify the user, such as the user ID and the IP address of the terminal device 1. In addition, the service includes an atomic service that performs one function and a composite service in which a plurality of atomic services are integrated. The service provides a certain function, such as a machine translation process, a morphological analysis process, a moving picture subtitle simultaneous translation service, a TV conference system service with language translation, and the like. However, the content of the service does not matter. The terminal reception unit 11 receives various instructions and data from the user. Needless to say, the service request may include data to be serviced. In addition, the service request may include two or more atomic service identifiers that are identifiers of two or more atomic services constituting the composite service. The service request may include a so-called program. A program is information defining a composite service, has two or more atomic service identifiers, and has control.

  Here, reception means reception of information input from an input device such as a keyboard, a mouse, a touch panel, reception of information transmitted via a wired or wireless communication line, an optical disk, a magnetic disk, and a semiconductor single body memory. It is a concept including reception of information read from a recording medium. The service request input means may be anything such as a keyboard, mouse or menu screen.

  The terminal transmission unit 12 transmits the service request received by the terminal reception unit 11 to the core server 3. In addition, the terminal transmission unit 12 transmits other commands received by the terminal reception unit 11, data, and the like to the core server 3.

  The terminal receiving unit 13 receives the service result in response to the transmission of the service request. The reception here is usually reception from the core server 3. However, the terminal reception unit 13 may receive the service result from the service server 2. Further, the terminal receiving unit 13 receives the service result while enjoying the service. For example, the terminal reception unit 13 receives a translation result that is a service result for a service request including a service identifier “translation processing” and data to be translated. Further, for example, when the requested service is a TV phone (TV conference) service, the terminal receiving unit 13 continues to receive moving images, voices, and the like from the other party during the conference.

  The terminal output unit 14 outputs the result of the service received by the terminal receiving unit 13. Output here refers to display on a display, projection using a projector, printing to a printer, sound output, transmission to an external device, storage in a recording medium, and output to other processing devices or other programs. It is a concept that includes delivery of processing results.

  The processing means storage unit 21 constituting the service server 2 can store one or more processing means for performing the service. Here, the processing means is usually a program or software for realizing a service, but may be hardware for realizing a service. Note that the programs and software are usually executable programs and software. The processing means is, for example, a morphological analysis program, a Japanese-English translation program, a speech recognition program, or the like.

  The service server receiving unit 22 receives a service request from the core server 3.

  The service unit 23 executes the processing unit of the processing unit storage unit 21 according to the service request received by the service server reception unit 22, performs the service, and acquires the service result. The service unit 23 normally reads out the processing unit corresponding to the service identifier included in the service request from the processing unit storage unit 21 and executes the read out processing unit. When the service request includes data to be processed, the service unit 23 passes the data to the processing unit corresponding to the service identifier included in the service request, and executes the processing unit.

  The service server transmission unit 24 transmits the service result of the service unit 23. The service server transmission unit 24 normally transmits the service result to the core server 3. However, the service server transmission unit 24 may transmit the service request to the terminal device 1 that has transmitted the service request.

  The constraint satisfaction information storage unit 31 constituting the core server 3 can store one or more constraint satisfaction information. The constraint satisfaction information includes a service identifier for identifying a service, constraint information, and adaptation information. The restriction information is information related to service restrictions. The adaptation information is information for satisfying the constraint when the constraint is not satisfied. The service identifier may be an atomic service identifier or a composite service identifier. The atomic service identifier is an identifier of an atomic service that is a service that can be realized by one processing means (program). The composite service identifier is an identifier of a composite service that is a service realized by combining two or more atomic services. The service identifier may be a concrete service identifier or an abstract service identifier. The concrete service identifier is the name or ID of a specific processing means (program) that provides the service. The abstract service identifier is a name or ID that symbolizes the function of the service. The abstract service identifier is, for example, “morpheme analysis”, “machine translation”, or the like. The constraint information is internal constraint information or external constraint information. The internal constraint information is constraint information related to one service, such as the amount of data that can be processed and the number of characters that can be processed. The external constraint information is constraint information related to two or more services, for example, information regarding constraints indicating that two or more services do not operate at once, or constraints indicating that two or more services operate at one time. Information. Here, “two or more services operate at the same time” usually means that two or more services do not operate simultaneously, but two or more services operate in combination. This means that two or more services operate continuously. Further, the constraint information may include constraint specifying information for specifying a constraint and inspection information indicating a method for checking whether or not the constraint specified by the constraint specifying information is satisfied. The constraint specifying information includes, for example, internal constraint information that is constraint information regarding one service such as the amount of data that can be processed and the number of characters that can be processed. In addition, the constraint specifying information includes, for example, external constraint information that is information regarding constraints indicating that two or more services do not operate at once, or external information that is information regarding constraints indicating that two or more services operate at a time. There is constraint information. The inspection information includes a program identifier (also referred to as a process identifier) that is an identifier of a program to be inspected, a program to be inspected and its program identifier, or a program to be inspected.

  The composite service information storage unit 32 stores composite service information. The composite service information is information that associates a composite service identifier with two or more atomic service identifiers. The composite service information may be a so-called program including a composite service identifier, two or more atomic service identifiers, and control methods thereof. The composite service information may be information included in the service request transmitted from the terminal device 1. The composite service identifier is an identifier for identifying a composite service.

  The core server reception unit 33 receives a service request from the terminal device 1. Further, the core server receiving unit 33 may receive other information such as a user identifier and a password from the terminal device 1. When the core server receiving unit 33 receives a user identifier or password, an authentication unit (not shown) of the core server 3 performs an authentication process. Since the authentication process is a known technique, a detailed description is omitted. The core server reception unit 33 may receive the service result from the service server 2.

  The constraint determination unit 34 acquires the constraint information from the constraint satisfaction information storage unit 31 using the service identifier included in the service request, and determines whether the service request satisfies the constraint specified by the constraint information. The service identifier here may be an atomic service identifier or a composite service identifier. When the service identifier included in the service request is an abstract service identifier, the constraint determination unit 34 acquires one or more concrete service identifiers corresponding to the abstract service identifier, and is identified by any one or more concrete service identifiers. It is determined whether or not the processing means satisfying the constraint specified by the constraint information. When the constraint determination unit 34 determines that the processing unit identified by all the concrete service identifiers does not satisfy the constraint specified by the constraint information, the service request does not satisfy the constraint specified by the constraint information. Judge. When the service identifier included in the service request is a concrete service identifier, the constraint determining unit 34 determines whether the processing unit identified by the concrete service identifier satisfies the constraint specified by the constraint information.

  Further, the constraint determination unit 34 acquires the inspection information from the constraint satisfaction information storage unit 31 using the service identifier included in the service request, performs the inspection according to the inspection information, and satisfies the constraint specified by the constraint specifying information. Determine whether or not. When the service identifier included in the service request is an abstract service identifier, the constraint determination unit 34 acquires one or more concrete service identifiers corresponding to the abstract service identifier, and checks each paired with the one or more concrete service identifiers. Information is acquired from the constraint satisfaction information storage unit 31 and checked according to the check information, and it is determined whether or not the service identified by each concrete service identifier satisfies the constraint specified by the constraint specifying information. Further, when the service identifier included in the service request is a concrete service identifier, the constraint determination unit 34 obtains inspection information paired with the concrete service identifier from the constraint satisfaction information storage unit 31 and performs an inspection according to the inspection information. And determining whether the service identified by the concrete service identifier satisfies the constraint specified by the constraint specifying information.

  In addition, when the service identifier included in the service request is a composite service identifier, the constraint determination unit 34 acquires two or more atomic service identifiers corresponding to the composite service identifier included in the service request from the composite service information storage unit 32. Then, using the two or more atomic service identifiers, the constraint information is acquired from the constraint satisfaction information storage unit 31, and it is determined whether the constraint specified by the constraint information is satisfied. When the atomic service identifier is an abstract service identifier, the constraint determination unit 34 acquires one or more concrete service identifiers corresponding to the abstract service identifier, and satisfies the constraint on the inspection information paired with the one or more concrete service identifiers. The information acquired from the information storage unit 31 is inspected according to the inspection information, and it is determined whether or not the service identified by each concrete service identifier satisfies the constraint specified by the constraint specifying information. Further, when the atomic service identifier is a concrete service identifier, the constraint determination unit 34 obtains inspection information that is paired with the concrete service identifier from the constraint satisfaction information storage unit 31 and performs an inspection according to the inspection information. It is determined whether or not the service identified by the service identifier satisfies the constraint specified by the constraint specifying information.

  When the service identifier included in the service request is a composite service identifier, the constraint determination unit 34 acquires the constraint information that is paired with the composite service identifier from the constraint satisfaction information storage unit 31, and the constraint specified by the constraint information It may be determined whether or not the above is satisfied. Further, when there are two or more atomic service identifiers corresponding to the composite service identifier, the constraint information corresponding to all the atomic service identifiers does not necessarily exist.

  In addition, when the service identifier included in the service request is a composite service identifier, the constraint determination unit 34 acquires two or more atomic service identifiers corresponding to the composite service identifier from the composite service information storage unit 32, and obtains two or more It is determined whether the atomic service identifier satisfies the constraint indicated by the external constraint information. When two or more atomic service identifiers are abstract service identifiers, the constraint determination unit 34 acquires two or more concrete service identifiers corresponding to the two or more abstract service identifiers, and among the two or more concrete service identifiers, It is determined whether or not a service identified by two or more concrete service identifiers corresponding to each abstract service identifier satisfies the constraint indicated by the external constraint information. If two or more atomic service identifiers are concrete service identifiers, it is determined whether or not the service identified by the two or more concrete service identifiers satisfies the constraint indicated by the external constraint information.

  When the constraint determination unit 34 determines that the constraint is not satisfied, the adaptation processing unit 35 acquires the adaptation information paired with the service identifier from the constraint satisfaction information storage unit 31 and performs the adaptation process specified by the adaptation information. Satisfy the constraints.

  In addition, when the constraint determination unit 34 determines that the constraint is not satisfied, the adaptation processing unit 35 acquires the adaptation information paired with the atomic service identifier that does not satisfy the constraint from the constraint satisfaction information storage unit 31, and the adaptation information Perform the specified adaptive processing to satisfy the constraints.

  Note that the adaptation processing unit 35 normally executes adaptation processing means identified by the adaptation process identifier included in the adaptation information. The adaptive processing means is a program that performs adaptive processing. The adaptation information includes, for example, an adaptation process identifier or adaptation process means. When the adaptation information has only the adaptation process identifier, the adaptation processing means is separately stored in a recording medium (not shown). The adaptive process is, for example, a process of dividing processing target data so that it can be processed. The adaptive process is a process for acquiring two or more service identifiers that identify two or more services that can be used together in the case of a composite service, for example. Needless to say, the processing content of the adaptive processing is not limited.

  The service server determination unit 36 determines a service server that can provide the service identified by the service identifier included in the service request. For example, when the adaptive processing unit 35 acquires two or more service identifiers that identify two or more services that can be used together, a service server that can provide the service identified by the two or more service identifiers It is determined as a service server that provides The process for determining the service server 2 is, for example, a process for acquiring a service server identifier for identifying the service server 2. Further, when the constraint determining unit 34 determines that the constraint is satisfied, the service server determining unit 36 acquires the identifier of the service server 2 corresponding to the service identifier. That is, when the constraint determining unit 34 determines that the constraint is satisfied, the adaptive processing by the adaptive processing unit 35 is not performed. Furthermore, if the restriction is not satisfied even if the adaptation processing by the adaptation processing unit 35 is performed, the service server determination unit 36 cannot determine the service server 2. Further, the service server determination unit 36 normally holds a correspondence table between service identifiers and service server identifiers. The service identifier here may be an abstract service identifier or a concrete service identifier.

  The service server management information storage unit 361 can store one or more service server management information. The service server management information includes an abstract service identifier, one or more concrete service identifiers, and a service server identifier. The abstract service identifier is an ID that identifies a function name or function, and includes, for example, morphological analysis, technical term dictionary function, machine translation, and the like. The concrete service identifier is information for identifying a specific service that realizes the service identified by the abstract service identifier. Concrete service identifiers include, for example, MeCab (see “http://mecab.sourceforge.net/”) that performs morphological analysis, and TreeTager (see “http://nlp.nagaokaut.ac.jp/TreeTagger”). ) Etc. Furthermore, the service server identifier is information for identifying the service server 2 that performs the service identified by the concrete service identifier.

  The service identifier acquisition unit 362 acquires one concrete service identifier that provides a service. The service identifier acquisition unit 362 acquires one concrete service identifier from one or more concrete service identifiers that realize the service identified by the abstract service identifier included in the service request. When there are two or more concrete service candidates for realizing the service, the service identifier acquisition unit 362 may randomly select one concrete service identifier. When there are two or more concrete service candidates for realizing the service, the service identifier acquisition unit 362 may select one concrete service identifier so as to satisfy the external restriction. Note that the process of selecting one concrete service identifier so as to satisfy the external constraint is normally performed by the adaptive processing unit 35. In such a case, the service identifier acquisition unit 362 reflects the result of the adaptation process of the adaptation processing unit 35 and selects one concrete service identifier selected by the adaptation processing unit 35.

  The service server identifier acquisition unit 363 acquires a service server identifier paired with the concrete service identifier acquired by the service identifier acquisition unit. The service server identifier is, for example, an IP address of a service server, a URL for accessing a service, a URI, or the like. In addition, it is preferable that the service server identifier acquisition unit 363 acquires the service server identifier so as to satisfy the external restriction.

  The core server transmitting unit 37 transmits a service request reflecting the result of the adaptive processing performed by the adaptive processing unit 35 to the service server 2 determined by the service server determining unit 36. The service request transmitted by the core server transmission unit 37 usually has a concrete service identifier. That is, it is preferable that the service identifier included in the service request received by the core server receiving unit 33 is an abstract service identifier, and the service identifier included in the service request transmitted by the core server transmitting unit 37 is a concrete service identifier.

  More specifically, the core server transmission unit 37 reflects the result of the adaptation processing unit 35 performing the adaptation process on the service server 2 identified by the service server identifier acquired by the service server identifier acquisition unit 363. Send a service request. Here, “transmission of a service request reflecting the result of adaptive processing” refers to transmission of a service request including the result of adaptive processing, transmission of a service request to the service server 2 that satisfies external constraints, etc. It is.

  If the constraint determination unit 34 determines that the constraint is satisfied, the core server transmission unit 37 transmits the received service request to the service server 2 determined by the service server determination unit 36.

  The terminal reception unit 11 can be realized by a device driver of an input unit such as a keyboard, control software for a menu screen, or the like.

  The processing unit storage unit 21, the constraint satisfaction information storage unit 31, the composite service information storage unit 32, and the service server management information storage unit 361 are preferably non-volatile recording media, but can also be realized by volatile recording media. is there. The process in which the processing means is stored in the processing means storage unit 21 or the like is not limited. For example, the processing means or the like may be stored in the processing means storage unit 21 or the like via a recording medium, and the processing means or the like transmitted via a communication line or the like is stored in the processing means storage unit 21 or the like. Alternatively, the processing means or the like input via the input device may be stored in the processing means storage unit 21 or the like.

  The terminal transmission unit 12, the service server transmission unit 24, and the core server transmission unit 37 are usually realized by wireless or wired communication means, but may be realized by broadcasting means.

  The terminal receiving unit 13, the service server receiving unit 22, and the core server receiving unit 33 are usually realized by wireless or wired communication means, but may be realized by means for receiving broadcasts.

  The terminal output unit 14 may be considered as including or not including an output device such as a display or a speaker. The terminal output unit 14 can be implemented by output device driver software, or output device driver software and an output device.

  The service unit 23, the constraint determination unit 34, the adaptive processing unit 35, the service server determination unit 36, the service identifier acquisition unit 362, and the service server identifier acquisition unit 363 can be usually realized by an MPU, a memory, or the like. The processing procedure of the service unit 23 or the like is usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by hardware (dedicated circuit).

  Next, the operation of the information system will be described. First, operation | movement of the terminal device 1 which comprises an information system is demonstrated using the flowchart of FIG.

  (Step S301) The terminal reception unit 11 determines whether an instruction or the like has been received from the user. If an instruction or the like is accepted, the process proceeds to step S302. If an instruction or the like is not accepted, the process proceeds to step S305.

  (Step S302) The terminal transmission unit 12 determines whether or not the instruction received in Step S301 is a service request. If it is a service request, go to step S303, and if it is not a service request, go to step S304.

  (Step S303) The terminal transmission unit 12 transmits the service request received in Step S301 to the core server 3, and returns to Step S301.

  (Step S304) The terminal transmitter 12 or processing means (not shown) performs processing corresponding to the other instructions and data received in Step S301, and returns to Step S301. When the terminal receiving unit 11 receives information to be passed to the processing unit in step S301 (for example, in a video conference, a video, audio, caption, etc.), the terminal transmitting unit 12 sends the information to be passed to the processing unit to the core server 3. Alternatively, it is transmitted to the service server 2.

  (Step S305) The terminal reception unit 13 determines whether or not a service result has been received. If the service result is received, the process goes to step S306; otherwise, the process returns to step S301.

  (Step S306) The terminal output unit 14 outputs the result of the service received in step S309, and returns to step S301.

  In the flowchart of FIG. 3, when the user inputs a service stop instruction, a stop command having a service identifier is transmitted to the core server 3.

  Further, in the flowchart of FIG. 3, the process is ended by powering off or interruption for aborting the process.

  Next, operation | movement of the service server 2 is demonstrated using the flowchart of FIG.

  (Step S <b> 401) The service server reception unit 22 determines whether a service request is received from the core server 3. If the service request is received, the process goes to step S402, and if the service request is not received, the process goes to step S406.

  (Step S402) The service unit 23 acquires a service identifier included in the service request received in step S401.

  (Step S403) The service unit 23 reads the processing unit corresponding to the service identifier acquired in step S402 from the processing unit storage unit 21, and executes the read processing unit.

  (Step S404) The service server transmission unit 24 acquires the service result of the service unit 23 in step S403.

  (Step S405) The service server transmission unit 24 transmits the result of the service acquired in step S404, and returns to step S401.

  (Step S <b> 406) The service server reception unit 22 determines whether a stop command has been received from the core server 3. If a stop command is received, the process proceeds to step S407, and if a stop command is not received, the process returns to step S401.

  (Step S407) The service unit 23 acquires a service identifier included in the stop command received in Step S406.

  (Step S408) The service unit 23 stops the execution of the processing means corresponding to the service identifier acquired in Step S407, and returns to Step S401.

  In the flowchart of FIG. 4, after receiving the service request, the processing means corresponding to the service identifier included in the service request may be continuously executed until a stop command is received. Then, acquisition and transmission of service results may be repeated.

  In the flowchart of FIG. 4, the process is terminated by power-off or a process termination interrupt.

  Next, the operation of the core server 3 will be described using the flowchart of FIG.

  (Step S <b> 501) The core server reception unit 33 determines whether a service request is received from the terminal device 1. If a service request is received, the process proceeds to step S502. If no service request is received, the process proceeds to step S504.

  (Step S502) The core server 3 processes the service request. Such service request processing will be described with reference to the flowcharts of FIGS.

  (Step S503) The core server transmission unit 37 transmits the result of the service request made by the service server 2 to the terminal device 1 that has transmitted the service request, and returns to step S501.

  (Step S504) The core server reception unit 33 determines whether or not a stop command has been received from the terminal device 1. If a stop command is received, the process goes to step S505, and if a stop command is not received, the process goes to step S507.

  (Step S505) The core server transmission unit 37 acquires the service server identifier of the service server 2 that performs the service identified by the service identifier included in the stop command. It is assumed that the service server identifier of the service server 2 performing the service is stored in a management unit (not shown) of the core server 3.

  (Step S506) The core server transmission unit 37 transmits a service stop command to the service server 2 identified by the service server identifier acquired in step S505, and returns to step S501.

  (Step S507) The core server reception unit 33 determines whether another instruction, data, or the like has been received from the terminal device 1. If another instruction or data is received, the process goes to step S508, and if not received, the process returns to step S501.

  (Step S508) The core server 3 performs processing according to other instructions and data. For example, when data (video or audio) used for the TV conference service is continuously received, the core server reception unit 33 transmits the data to the service server 2 to be processed, and the process proceeds to step S501. Return.

  In the flowchart of FIG. 5, the process ends when the power is turned off or the process ends.

  Next, the service request process of step S502 will be described using the flowcharts of FIGS.

  (Step S601) The constraint determination unit 34 determines whether or not the service identifier included in the received service request is a composite service identifier. If it is a composite service identifier, go to step S602; otherwise, go to step S610.

  (Step S602) The constraint determination unit 34 acquires a composite service identifier from the service request.

  (Step S <b> 603) The constraint determination unit 34 acquires composite service information corresponding to the composite service identifier from the composite service information storage unit 32. In addition, the constraint determination unit 34 may acquire composite service information included in the service request.

  (Step S604) The constraint determination unit 34 acquires constraint information that is paired with the composite service identifier acquired in Step S603 from the constraint satisfaction information storage unit 31.

  (Step S605) The constraint determination unit 34 determines whether the constraint information has been acquired in step S604. If the constraint information can be acquired, the process proceeds to step S606. If the constraint information cannot be acquired, the process proceeds to step S610.

  (Step S606) The constraint determination unit 34 determines whether the constraint is satisfied using the constraint information acquired in step S604. For example, the constraint determination unit 34 passes the data included in the service request to an inspection unit (for example, a program) specified by the inspection information, and determines whether the constraint specified by the constraint specification information is satisfied.

  (Step S607) The constraint determination unit 34 proceeds to step S608 if it is determined that the determination result in step S606 does not satisfy the constraint, and proceeds to step S610 if it is determined that the constraint is satisfied.

  (Step S <b> 608) The adaptation processing unit 35 acquires the adaptation information paired with the composite service identifier from the constraint satisfaction information storage unit 31.

  (Step S609) The adaptation processing unit 35 uses the adaptation information acquired in step S608 to perform the adaptation process specified by the adaptation information so as to satisfy the constraint. Note that it is preferable to perform such processing using a flag included in the adaptation information. The flag is information indicating the timing of the adaptive processing, the number of times of adaptive processing (once or repeatedly), or the timing of the adaptive processing and the number of times of adaptive processing. The timing of the adaptation process is, for example, before or after performing the service. The adaptive process performed before the service (process) identified by the service identifier is referred to as pre-processing, and the adaptive process performed after the service (process) identified by the service identifier is referred to as post-process.

  (Step S610) The constraint determination unit 34 substitutes 1 for the counter i.

  (Step S611) The constraint determination unit 34 determines whether or not the i-th atomic service identifier exists. Here, when the service is a composite service, the constraint determination unit 34 determines whether or not the i-th atomic service identifier exists according to the definition in the composite service information. When the service is an atomic service, the constraint determination unit 34 determines that the i-th atomic service identifier exists only when “i = 1”. If the i-th atomic service identifier exists, the process goes to step S612, and if it does not exist, the process returns to the upper process.

  (Step S612) The constraint determination unit 34 acquires the i-th atomic service identifier from the composite service information or the service request.

  (Step S613) The constraint determination unit 34 acquires constraint information from the constraint satisfaction information storage unit 31 using the i-th atomic service identifier. When the i-th atomic service identifier is an abstract service identifier, the constraint determination unit 34 acquires one or more concrete service identifiers corresponding to the abstract service identifier, and each of the one or more concrete service identifiers and Paired constraint information is acquired from the constraint satisfaction information storage unit 31. Here, when the i-th atomic service identifier is an abstract service identifier, when there is at least one concrete service identifier corresponding to the abstract service identifier without restriction, restriction information is not acquired. Further, when the i-th atomic service identifier is an abstract service identifier, each of the one or more only when one or more concrete service identifiers corresponding to the unrestricted abstract service identifier have paired constraint information. The constraint information paired with the concrete service identifier is acquired from the constraint satisfaction information storage unit 31. Here, when the i-th atomic service identifier is an abstract service identifier, the constraint determination unit 34 may acquire the constraint information paired with the abstract service identifier from the constraint satisfaction information storage unit 31.

  (Step S614) The constraint determination unit 34 determines whether constraint information has been acquired in step S613. If the constraint information is acquired in step S613, the process goes to step S615. If the constraint information is not acquired, the process goes to step S620.

  (Step S615) The constraint determination unit 34 determines whether one or more constraints are satisfied using the one or more constraint information acquired in step S614. For example, the constraint determination unit 34 passes the data included in the service request to an inspection unit (for example, a program) specified by the inspection information, and determines whether the constraint specified by the constraint specification information is satisfied. If the timing of the adaptive process is after the service (in the case of post-processing), here, the constraint determination unit 34 may determine that the constraint is not always satisfied. This is because in the case of post-processing, it may be impossible to determine whether or not the constraint is satisfied unless the processing result is obtained.

  (Step S616) When it is determined that the determination result at step S615 does not satisfy the constraint, the constraint determining unit 34 proceeds to step S617, and when it is determined that the constraint is satisfied, the constraint determining unit 34 proceeds to step S620. When one or more pieces of constraint information are acquired in step S614, the constraint determination unit 34 goes to step S617 in the case where it is determined that even one determination result in step S615 does not satisfy the constraint indicated by the constraint information. If it is determined that the constraint indicated by the constraint information is satisfied, the process goes to step S620.

  (Step S617) The adaptation processing unit 35 acquires adaptation information from the constraint satisfaction information storage unit 31 using the i-th atomic service identifier. Here, when the i-th atomic service identifier is an abstract service identifier, the adaptation processing unit 35 sets the adaptation information paired with one or more concrete service identifiers corresponding to the atomic service identifier to the constraint satisfaction information storage unit 31. Get from.

  (Step S618) The adaptation processing unit 35 determines from the adaptation information acquired in Step S617 whether or not the timing for performing the adaptation process is before the performance of the service (whether it is a pre-process). If it is pre-processing, it will go to step S619, and if it is not pre-processing, it will go to step S626.

  (Step S619) The adaptation processing unit 35 uses the adaptation information acquired in step S617 to perform the adaptation process specified by the adaptation information so as to satisfy the constraint. When there is a service identified by two or more concrete service identifiers that do not satisfy the constraint, the adaptive processing unit 35 determines a concrete service identifier of one service that satisfies the constraint, and matches the one concrete service identifier. The adaptation information specified by the adaptation information is used to satisfy the constraint. Here, when there is a service identified by two or more concrete service identifiers that do not satisfy the constraint, the adaptive processing unit 35 randomly selects a concrete service identifier of one service that satisfies the constraint from among the plurality of concrete service identifiers. Or a concrete service identifier of one service that satisfies the constraints based on some rule (for example, a rule that obtains a concrete service identifier of a service of a service server that currently has a low load). good.

  (Step S620) The service server determination unit 36 determines the service server 2 that can provide the service identified by the i-th atomic service identifier. This service server determination process will be described with reference to the flowchart of FIG.

  (Step S621) The core server transmission unit 37 transmits a service request to the service server 2 determined by the service server determination unit 36.

  (Step S622) The core server reception unit 33 determines whether or not a service result has been received from the service server 2. If received, the process returns to step S623, and if not received, the process returns to step S622.

  (Step S623) The adaptation processing unit 35 determines from the adaptation information acquired in Step S617 whether or not the timing for performing the adaptation process is after service execution (whether it is post-processing). If it is post-processing, it will go to step S624, and if it is not post-processing, it will go to step S625.

  (Step S624) The adaptation processing unit 35 uses the adaptation information acquired in step S617 to perform the adaptation process specified by the adaptation information so as to satisfy the constraint.

  (Step S625) The constraint determination unit 34 increments the counter i by one. The process returns to step S611.

  (Step S626) From the adaptation information acquired in step S617, the adaptation processing unit 35 determines whether or not the timing for performing the adaptation processing is after service execution (whether it is post-processing). If it is post-processing, it will go to step S620, and if it is not post-processing, it will go to step S627.

  (Step S627) The adaptation processing unit 35 determines whether or not the constraint is an external constraint from the constraint information acquired in Step S613. If it is an external constraint, go to step S628, and if it is not an external constraint, go to step S625.

  (Step S628) The adaptation processing unit 35 temporarily stores adaptation information in a buffer. The adaptation information temporarily stored in the buffer is used in the service server determination process in step S620. Go to step S620.

  Next, the service server determination process in step S620 will be described with reference to the flowchart in FIG.

  (Step S801) The service server determination unit 36 determines whether there is adaptation information stored in the buffer. If there is adaptation information, the process goes to step S802, and if there is no adaptation information, the process goes to step S804.

  (Step S802) The service server determination unit 36 determines whether or not the service identifier included in the adaptation information stored in the buffer is related to the service identifier currently focused (usually the atomic service identifier). The service server determination unit 36 determines whether or not they are related using the adaptation information and the i-th atomic service identifier. If related, go to step S803, and if not related, go to step S804. Note that, when the service identifier of the adaptation information matches the service identifier of interest, the related service identifier is the abstract service identifier, and the service identifier of the adaptation information is the concrete service identifier. Such as the case.

  (Step S803) The service identifier acquisition unit 362 acquires a concrete service identifier satisfying the restriction from the adaptation information. Go to step S805.

  (Step S804) The service identifier acquisition unit 362 acquires a concrete service identifier from the i-th atomic service identifier. For example, the service identifier acquisition unit 362 acquires a concrete service identifier paired with the i-th atomic service identifier (usually an abstract service identifier here) from the service server management information storage unit 361.

  (Step S805) The service server identifier acquisition unit 363 acquires from the service server management information storage unit 361 a service server identifier that is paired with the concrete service identifier acquired by the service identifier acquisition unit 362. Return to upper process.

  Hereinafter, a specific operation of the information system in the present embodiment will be described. A conceptual diagram of the information system is shown in FIG.

  Now, the constraint satisfaction information storage unit 31 of the core server 3 holds the constraint satisfaction information management table shown in FIG. The constraint satisfaction information management table stores one or more records having “ID”, “service identifier”, “constraint information”, and “adaptive information”. “ID” is information for identifying a record. The “constraint information” includes “constraint specifying information” and “inspection information”. “Adaptive information” includes “adaptive processing information” and “flag”. The attribute value of “service identifier” can be a concrete service identifier or an abstract service identifier. The service identifier here is a service name. The “constraint specifying information” is information for specifying the content of the constraint.

  The constraint identification information “character string length <= 400 characters” of “ID = 1” in FIG. 9 indicates that only data having a character string length of 400 characters or less can be processed. Then, the inspection information “length (character string)” of “ID = 1” is determined by the function (program) “length (character string)” for obtaining the length of the character string to determine whether or not the constraint is satisfied. Show. Furthermore, the adaptive processing information “divide (character string, 400)” of “ID = 1” is obtained by adaptive processing that executes a function (program) “divide (character string, 400)” that divides the character string into 400 characters. It indicates that the constraint is satisfied. Further, the flag here indicates the timing for performing adaptive processing and the number of repetitions. The flag “1” indicates that the timing for performing the adaptive processing is before the adaptive processing (pre-processing), and the number of processing is one. The flag “2” indicates that the timing for performing the adaptation process is after the adaptation process (post-processing), and the number of processes is one. The flag “3” indicates that the timing of performing the adaptive processing is before the adaptive processing (preprocessing), and the number of processing is n times (n is 1 or more, until the constraint is satisfied). Further, the flag “4” indicates that the timing for performing the adaptive processing is after the adaptive processing (post processing), and the number of processing is n times (n is 1 or more, until the constraint is satisfied). The flag may be information indicating only the timing of performing the adaptive process or only the number of repetitions. Further, the constraint information of “ID = 1” is internal constraint information because it is a constraint within one service.

  Further, in FIG. 9, the constraint identification information “ID = 2” can be used only for Japanese-English translation 2 is used when using the Japanese-English translation service when using morphological analysis 1. Only shows that it is available. The adaptive processing information “ID = 2” indicates that “Japanese-English translation 2” is selected as the Japanese-English translation service when morphological analysis 1 is selected. In FIG. 9, “-” means empty. The constraint information with “ID = 2” is external constraint information because it is a constraint between two or more services.

  Further, the constraint identification information “format == format 1” of “ID = 3” indicates that the format that can be processed is “format 1”. The inspection information “ID = 3” indicates that “checkForm (input)” determines whether or not the constraint is met by a function “checkForm (input)” that checks the format of the input data. Also, the adaptive process information “changeForm (input)” of “ID = 3” indicates a process of converting the input data into the format 1 to satisfy the constraint. Further, the flag “1” with “ID = 3” indicates that the timing for performing the adaptive processing is before the adaptive processing (preprocessing), and the number of processing is one. The constraint information with “ID = 3” is internal constraint information.

  Further, the service identifier of “ID = 4” is the abstract service identifier “voice recognition service”. Further, the constraint identification information “ID = 4” character code of the recognition result == Shift-JIS indicates that the data code should be “Shift-JIS” after providing the voice recognition service. Then, the check information “checkCode (output)” of “ID = 4” is determined by the function “checkCode (output)” that checks the code of the output data after the service is provided to determine whether or not it matches the constraint. Show. Further, the adaptive processing information “changeCode (output)” with “ID = 4” indicates that the output data is converted to “Shift-JIS” so as to satisfy the constraint. Further, the flag “2” with “ID = 4” indicates that the timing for performing the adaptive processing is after the adaptive processing (post processing) and the number of processing is one.

  The service identifier with “ID = 5” is the abstract service identifier “international telephone translation service”. Further, the constraint identification information “data amount <= 1 Kbyte” of “ID = 5” indicates that the target data amount of this service is 1 Kbyte or less. In addition, the inspection information of “ID = 5” is “length (character string)” is a function (program) that acquires the length of the character string, and “length (character string)” is used to determine whether or not the constraint is satisfied. Is shown. Further, the adaptive processing information “divide (data, 1K)” of “ID = 5” satisfies the constraint by the adaptive processing that executes a function (program) “divide (data, 1K)” that divides data into 1K. Shows that Further, the flag “3” indicates that the timing for performing the adaptive processing is before the adaptive processing (preprocessing), and the number of processing is n times (n is 1 or more, until the constraint is satisfied).

  Furthermore, the service identifier of “ID = 6” is the concrete service identifier “morpheme analysis 2”. In addition, the constraint identification information “ID = 6” “Available for Japanese-English translation services other than Japanese-English translation 2” indicates that the Japanese-English translation 2 cannot be used when the morphological analysis 2 is used. Also, the adaptive processing information of “ID = 6” indicates that when morphological analysis 2 is selected, Japanese-English translation 2 cannot be used as a Japanese-English translation service, and another Japanese-English translation service is selected. Yes. The constraint information with “ID = 6” is external constraint information.

  FIG. 10 is a composite service information management table stored in the composite service information storage unit 32. The composite service information management table stores one or more records having “ID” and “composite service information”. “Composite service information” includes “composite service identifier” and “atomic service identifier”. “ID = 1” in FIG. 10 indicates that the composite service “science and technology paper Japanese-English machine translation” performs “technical term dictionary service” for technical terms after performing “morphological analysis service”. Finally, we show that we will provide a Japanese-English translation service. The composite service information of “ID = 1” in FIG. 10 corresponds to a so-called program.

  Further, “ID = 2” in FIG. 10 indicates that the composite service “international telephone translation service” performs the atomic services “speech recognition service”, “translation service”, and “speech synthesis service” in order.

  FIG. 10 is a service server management information management table stored in the service server management information storage unit 361. The service server management information management table includes “ID”, “abstract service identifier”, “concrete service identifier”, “service server identifier”, and “flag”. Here, the service server identifier is an identifier of the service server 2 that can provide the service identified by the concrete service identifier. The flag is information indicating whether to execute a service identified by all the concrete service identifiers corresponding to the abstract service identifier or to select and execute a service identified by one concrete service identifier. The flag “0” indicates that a service identified by one concrete service identifier corresponding to the abstract service identifier is selected and executed. The flag “1” indicates that a service identified by all concrete service identifiers corresponding to the abstract service identifier is executed.

  Furthermore, the processing means storage unit 21 of each service server 2 stores processing means (for example, an executable program) for performing the service.

In this situation, the following three specific examples will be described.
(Specific example 1)

  It is assumed that a user inputs a service request having a concrete service identifier and “Japanese-English translation 1” which is an atomic service identifier. This service request includes a sentence to be translated and a sentence entered by the user, “My name is Taro Yamada. I am currently ...” , And. It is assumed that the character string length of the sentence “My name is Taro Yamada. I am currently ...” is 760 characters.

  Next, the terminal reception unit 11 of the terminal device 1 receives a service request including the service identifier “Japanese-English translation 1” and the above sentence. Then, the terminal transmission unit 12 transmits the service request to the core server 3.

  Next, the core server receiving unit 33 of the core server 3 receives a service request from the terminal device 1. Then, the constraint determination unit 34 acquires the service identifier “Japanese-English translation 1” from the service request.

  Next, the constraint determination unit 34 acquires the constraint information “character string length <= 400 characters” and “length (character string)” paired with the service identifier “Japanese-English translation 1” from the constraint satisfaction information storage unit 31.

  Then, the constraint determination unit 34 determines whether the constraint is satisfied using the acquired constraint information. That is, the constraint determination unit 34 executes “length (“ My name is Taro Yamada. I am currently ... ”) and obtains“ character string length = 760 ”. Then, the constraint determination unit 34 determines that “character string length = 760” does not satisfy the constraint specifying information “character string length <= 400 characters”.

  Next, the adaptive processing unit 35 acquires the adaptive processing information “divide (character string, 400)” and the flag “1” that are paired with the service identifier “Japanese-English translation 1” from the constraint satisfaction information management table of FIG. To do.

  Next, the adaptation processing unit 35 determines from the acquired flag “1” that the adaptation processing is pre-processing. Then, the adaptive processing unit 35 uses the acquired adaptive processing information “divide (character string, 400)” and uses the adaptive processing “divide (“ My name is Taro Yamada. I am currently ... ... “, 400)” to satisfy the constraints. In other words, the sentence "My name is Taro Yamada. I am now ..." is divided into 386 characters and the remaining 374 characters. It is assumed that the divide function is a function that divides a sentence at sentence breaks. As a result, the constraints of “Japanese to English translation 1” have been satisfied.

  Next, the service server determination unit 36 obtains the service server identifier “service server E” that can provide the service identified by the service identifier “Japanese-English translation 1” from the service server management information management table of FIG. get.

  Next, the core server transmission unit 37 transmits the service request “Japanese-English translation 1” to the service server “service server E” determined by the service server determination unit 36. Here, the service request has one or more sentences consisting of the first 386 characters of the sentence "My name is Taro Yamada. I am now ...". Next, the core server transmission unit 37 adds the service request “service server E” determined by the service server determination unit 36 to the service request “service server E” including one or more sentences including the 387th to 760th characters. Send Japanese-English translation 1 ”.

  Next, the service server receiving unit 22 of the service server E receives the first service request “Japanese-English translation 1” from the core server 3. Then, the service unit 23 of the service server E acquires the service identifier “Japanese-English translation 1” included in the received service request. Next, the service unit 23 reads the processing means (usually a program) corresponding to the acquired service identifier “Japanese-English translation 1” from the processing means storage unit 21, and reads the sentence “My name is I am Taro Yamada. I pass one or more sentences consisting of the first 386 characters of "Currently ..." and execute the processing means. Then, the service unit 23 obtains “My name is Taro Yamada. I...” That is a translation result of the above sentence. Then, the service server transmission unit 24 acquires the result “My name is Taro Yamada. I...” Of the service of the service unit 23 and transmits it to the core server 3.

  The service server receiving unit 22 of the service server E receives the second service request “Japanese-English translation 1” from the core server 3. Then, the service unit 23 of the service server E acquires the service identifier “Japanese-English translation 1” included in the received service request. Next, the service unit 23 reads the processing means (usually a program) corresponding to the acquired service identifier “Japanese-English translation 1” from the processing means storage unit 21, and sends the 387 characters in the sentence to the read processing means. One or more sentences composed of the first to 760th characters are passed and the processing means is executed. Then, the service unit 23 obtains a translation result. Then, the service server transmission unit 24 acquires the translation result and transmits it to the core server 3.

  Next, the core server receiving unit 33 receives the service result “My name is Taro Yamada. I...” From the service server 2. The core server reception unit 33 also receives the next translation result. As a result, a translation result (English) of a sentence having a length of 760 Japanese sentences was obtained.

  Next, the core server transmission unit 37 transmits the result of the “Japanese-English translation 1” service request made by the service server 2 to the terminal device 1 that has transmitted the service request.

Next, the terminal receiving unit 13 of the terminal device 1 receives the service result. Then, the terminal output unit 14 outputs a translation result (English) of a sentence having a length of 760 characters, which is a result of the received service.
(Specific example 2)

  It is assumed that the user has input a service request having “voice recognition service” which is an abstract service identifier and an atomic service identifier. It is assumed that the service request includes voice data input by the user.

  Then, the terminal reception unit 11 of the terminal device 1 receives a service request having “voice recognition service” and voice data. Then, the terminal transmission unit 12 transmits the accepted service request to the core server 3.

  Next, the core server reception unit 33 receives the service request from the terminal device 1.

  Next, the constraint determination unit 34 acquires a service identifier “voice recognition service” included in the service request. Then, the constraint determination unit 34 stores the constraint identification information “recognition result character code == Shift-JIS” and the inspection information “checkCode (output)” paired with the service identifier “voice recognition service” and the constraint satisfaction information management table ( Obtained from FIG. Further, the constraint determination unit 34 acquires the concrete service identifier “multilingual speech recognition 1” corresponding to the abstract service identifier “speech recognition service” from the service server management information management table of FIG. Then, the constraint determination unit 34 tries to acquire constraint information paired with the concrete service identifier “multilingual speech recognition 1”, but cannot acquire the constraint information.

  Next, the constraint determination unit 34 determines whether the constraint is satisfied using the acquired constraint information (such as “character code of recognition result == Shift-JIS”). Here, the flag “2” corresponding to the service identifier “speech recognition service” determines that the constraint processing is not satisfied here because the timing for performing the adaptation processing is after the adaptation processing (post-processing). , And.

  Next, the adaptation processing unit 35 acquires the adaptation process information “changeCode (output)” and the flag “2” that are paired with the service identifier “voice recognition service” from the constraint satisfaction information management table.

  Next, the adaptation processing unit 35 determines from the flag “2” that the timing for performing the adaptation process is after the service.

  Next, the service server determination unit 36 sets the service server identifier “service server F” paired with the concrete service identifier “multilingual speech recognition 1” corresponding to the abstract service identifier “voice recognition service” to the service server in FIG. Acquired from the management information management table.

  Next, the core server transmission unit 37 transmits a service request having the service identifier “multilingual voice recognition 1” and voice data to the service server F determined by the service server determination unit 36.

  Next, the service server receiving unit 22 of the service server F receives the service request from the core server 3.

  Then, the service unit 23 gives voice data included in the service request to the multilingual voice recognition 1, operates the multilingual voice recognition 1, and performs voice recognition processing. Then, the service unit 23 obtains a character string that is a result of performing voice recognition processing on the voice data. Next, the service server transmission unit 24 transmits the acquired service result (character string) to the core server 3.

  Next, the core server reception unit 33 receives a service result (character string) from the service server 2.

  Next, the adaptation processing unit 35 detects from the flag “2” included in the acquired adaptation information that the timing for performing the adaptation processing is after the service.

  Then, the adaptive processing unit 35 executes the adaptive processing information “changeCode (received character string)” using the acquired adaptive processing information “changeCode (output)”, resulting in a code of “Shift-JIS”. Get a string.

  Next, the core server transmission unit 37 transmits the character string having the code of “Shift-JIS” to the terminal device 1 that has transmitted the service request.

Next, the terminal receiving unit 13 of the terminal device 1 receives a character string that is a result of the service. And the terminal output part 14 outputs the character string which is the result of the received service.
(Specific example 3)

  It is assumed that the user inputs a service request having the composite service identifier “science and technology paper Japanese-English machine translation” and Japanese paper data (text).

  Next, the terminal reception part 11 of the terminal device 1 receives said service request from a user. Then, the terminal transmission unit 12 transmits the accepted service request to the core server 3.

  Next, the core server receiving unit 33 of the core server 3 receives a service request from the terminal device 1.

  Then, the constraint determination unit 34 determines that the service identifier “science and technology paper Japanese-English machine translation” included in the received service request is a composite service identifier from the composite service information management table of FIG.

  Next, the constraint determination unit 34 specifies information of the composite service corresponding to the composite service identifier “science and technology paper Japanese-English machine translation” “morpheme analysis service; if (term is technical term) {technical term dictionary service; } Japanese-English translation service; ”is acquired from the composite service information management table.

  Next, it is assumed that the constraint determination unit 34 tries to acquire the constraint information paired with the composite service identifier “science and technology paper Japanese-English machine translation” from the constraint satisfaction information storage unit 31 but cannot acquire the constraint information.

  Next, the constraint determination unit 34 obtains the first atomic service identifier “morpheme analysis service” from the composite service information.

  Next, it is assumed that the constraint determining unit 34 acquires the concrete service identifier “morpheme analysis 1” corresponding to the abstract service identifier because the first atomic service identifier “morpheme analysis service” is an abstract service identifier. Here, the constraint determination unit 34 has a plurality of concrete service identifiers for the abstract service identifier “morpheme analysis service”, but the constraint determination unit 34 randomly selects one concrete service identifier “morpheme analysis 1”. It is assumed that ten service server management information management tables are selected.

  Next, the constraint determination unit 34 acquires the constraint identification information “available only for Japanese-English translation 2” paired with the service identifier “morpheme analysis 1” from the constraint satisfaction information management table (FIG. 9).

  Next, the constraint determination unit 34 tries to determine whether or not the constraint is satisfied by using the acquired constraint information “Only English-Japanese translation 2 is available”, but this constraint information is external constraint information. It cannot be judged here.

  Then, the adaptation processing unit 35 sets the adaptation information “if (select morpheme analysis 1) {Japanese-English translation service = Japanese-English translation 2;}” paired with the service identifier “morpheme analysis 1” as constraint satisfaction information. Obtained from the management table (FIG. 9).

  Next, the adaptive processing unit 35 determines from the acquired constraint information that the constraint is an external constraint, neither pre-processing nor post-processing.

  Next, the adaptation processing unit 35 temporarily stores adaptation information “if (select morpheme analysis 1) {Japanese-English translation service = Japanese-English translation 2;}” in the buffer.

  Next, the service server determination unit 36 refers to the service server management information management table of FIG. 11 and changes the service server 2 that can provide the service identified by the service identifier “morpheme analysis 1” to “service server A”. decide.

  Next, the core server transmission unit 37 transmits to the service server A a service request having a service identifier “morpheme analysis 1” and Japanese paper data.

  Next, the service server receiving unit 22 of the service server A receives a service request having the service identifier “morpheme analysis 1” and Japanese paper data from the core server 3.

  Next, the service unit 23 performs a “morpheme analysis 1” process on the Japanese paper data to obtain Japanese paper data subjected to morphological analysis.

  Next, the service server transmission unit 24 transmits the service result of the service unit 23 (Japanese paper data subjected to morphological analysis) to the core server 3.

  Next, the core server receiving unit 33 of the core server 3 receives the service result (Japanese paper data subjected to morphological analysis) from the service server A.

  Next, the adaptation processing unit 35 determines that the adaptation processing is not post-processing based on the acquired adaptation information.

  Next, the constraint determination unit 34 acquires the second service identifier “technical term dictionary service”.

  Next, it is assumed that the constraint determination unit 34 tries to acquire the constraint information paired with the second service identifier “technical term dictionary service” from the constraint satisfaction information management table, but cannot acquire the constraint information.

  Next, the service server determination unit 36 determines that the adaptation information exists in the buffer. Next, the service server determination unit 36 has the service identifier “Japanese-English translation” included in the adaptation information “if (select morphological analysis 1) {Japanese-English translation service = Japanese-English translation 2;}” stored in the buffer. It is determined that the “service” is not related to the service identifier “technical term dictionary service” currently focused on.

  Then, the service identifier acquisition unit 362 of the service server determination unit 36 acquires three concrete service identifiers “chemical specialty dictionary”, “electric specialty dictionary”, and “bio specialty dictionary” corresponding to the service identifier “technical term dictionary service”. . Further, since the flag paired with the concrete service identifier is “1”, the service identifier acquisition unit 362 determines that the concrete service identified by all the concrete service identifiers is executed.

  Next, the service server identifier acquisition unit 363 includes the service server identifiers “service server C” “pair” with the concrete service identifiers “chemical specialty dictionary”, “electric specialty dictionary”, and “bio specialty dictionary” acquired by the service identifier acquisition unit 362. “Service Server A” and “Service Server D” are acquired from the service server management information management table (FIG. 11).

  Next, the core server transmission unit 37 sends a service request (each concrete service identifier “chemical specialty dictionary”) to the service server 2 (“service server C”, “service server A”, “service server D”) determined by the service server determination unit 36. "Specialized terms (nouns or noun phrases, etc.) extracted from Japanese paper data subjected to morphological analysis, including" electrical specialized dictionaries "and" biological specialized dictionaries "). The extraction of technical terms is preferably performed by the core server 3, but may be performed by the service server 2. Further, the technical term extraction process is a known technique, and thus the description thereof is omitted.

  The service server receiving unit 22 of each of the three service servers receives a service request from the core server 3.

  Next, the service units 23 of each of the three service servers translate possible technical terms using the technical term dictionaries. Then, the service server transmission unit 24 of each of the three service servers transmits the technical term translation result to the core server 3.

  Next, the core server receiving unit 33 of the core server 3 receives service results (translation results of technical terms) from the three service servers 2.

  Next, the adaptation processing unit 35 determines that it is not post-processing from the acquired adaptation information.

  Next, the constraint determination unit 34 acquires the third service identifier “Japanese-English translation service” from the composite service information.

  Next, it is assumed that the constraint determination unit 34 tries to acquire the constraint information paired with the third service identifier “Japanese-English translation service” from the constraint satisfaction information management table, but cannot acquire the constraint information.

  Next, the service server determination unit 36 determines that there is adaptation information stored in the buffer.

  Next, the service server determination unit 36 has the service identifier “Japanese-English translation service” included in the adaptation information “if (select morphological analysis 1) {Japanese-English translation service = Japanese-English translation 2;}” stored in the buffer. However, it is determined that the service identifier “Japanese-English translation service” currently focused on (matches here).

  Then, the service identifier acquisition unit 362 executes the adaptation information “if (select morpheme analysis 1) {Japanese-English translation service = Japanese-English translation 2;}”, and obtains a concrete service identifier “Japanese-English translation 2” that satisfies the constraints. get.

  Next, the service server identifier acquisition unit 363 stores the service server identifier “service server B” paired with the concrete service identifier “Japanese-English translation 2” acquired by the service identifier acquisition unit 362 in the service server management information management table (FIG. 11).

  Next, the core server transmission unit 37 has the service identifier “Japanese-English translation 2” in the service server B determined by the service server determination unit 36, and receives the data obtained by completing the morphological analysis service and the three technical term dictionary services. The service request which has is transmitted.

  Next, the service server receiving unit 22 of the service server B receives the service request from the core server 3.

  Next, the service unit 23 passes the data included in the service request to the processing means identified by the service identifier “Japanese-English translation 2”, and executes the processing means.

  Next, the service server transmission unit 24 transmits the service result (thesis data translated into English) to the terminal device 1.

  Next, the terminal receiving unit 13 receives the service result (thesis data translated into English). Then, the terminal output unit 14 outputs the result of the received service (paper data translated into English).

  As described above, according to the present embodiment, even when a service that satisfies a given constraint cannot be selected, a service can be provided by performing an adaptive process that is a process that satisfies the given constraint.

  In the present embodiment, even in the case of a composite service, even if a service that satisfies the given constraint cannot be selected, the composite service can be provided by performing an adaptive process that is a process that satisfies the given constraint.

  Further, in the present embodiment, even when the execution of an abstract service is instructed and a concrete service that satisfies a given constraint cannot be selected, by performing an adaptive process that is a process that satisfies the given constraint, Provide abstract services.

  Further, in this embodiment, even when the constraint is a constraint between a plurality of services (external constraints), even when a service that satisfies the given constraint cannot be selected, an adaptive process that is a process that satisfies the given constraint is performed. By doing so, it is possible to provide composite services.

  Note that, according to the present embodiment, an example has been described in which constraint information can be held for an abstract service identifier. However, the service identifier paired with the constraint information may be only the concrete service identifier.

  Furthermore, the processing in the present embodiment may be realized by software. Then, this software may be distributed by software download or the like. Further, this software may be recorded and distributed on a recording medium such as a CD-ROM. This also applies to other embodiments in this specification. In addition, the software which implement | achieves the core server 3 in this Embodiment is the following programs. That is, this program stores, on the recording medium, a service identifier for identifying a service, constraint information that is information on the constraint of the service, and adaptation information that is information for satisfying the constraint when the constraint is not satisfied. 1 or more constraint satisfaction information is stored, the computer uses a core server receiving unit that receives a service request from a terminal device, and a service identifier included in the service request, and the constraint information is stored in the recording medium. And a constraint determination unit that determines whether or not the constraint specified by the constraint information is satisfied, and when the constraint determination unit determines that the constraint is not satisfied, using the service identifier, the adaptation information An adaptive processing unit that satisfies the restriction by performing an adaptive process specified by the adaptive information, and the service A service server determination unit that determines a service server that can provide the service identified by the service identifier included in the request, and a result of the adaptive processing unit performing adaptive processing on the service server determined by the service server determination unit. It is a program for functioning as a core server transmission part which transmits the reflected service request.

  In the above program, the constraint information includes constraint specification information for specifying a constraint, and test information indicating a test method for checking whether or not the constraint specified by the constraint specification information is satisfied. The unit obtains inspection information paired with a service identifier included in the service request from the recording medium, performs inspection according to the inspection information, and determines whether or not the constraint specified by the constraint specifying information is satisfied. As a thing, it is preferable to make a computer function.

  In the above program, the service identifier included in the service request is a composite service including a plurality of services, and a composite service identifier for identifying the composite service and two or more atoms included in the composite service are included in the recording medium. Composite service information for associating two or more atomic service identifiers for identifying services is further stored, and the constraint determination unit, when the service identifier included in the service request is a composite service identifier, 2 or more atomic service identifiers corresponding to the composite service identifier included in the storage medium are acquired from the recording medium, and constraint information paired with the two or more atomic service identifiers is acquired from the recording medium, It is determined whether or not a specified constraint is satisfied, and the adaptation processing unit is configured to determine the constraint determination unit. When it is determined that the constraint is not satisfied, adaptation information paired with an atomic service identifier that does not satisfy the constraint is acquired from the recording medium, and an adaptation process specified by the adaptation information is performed to satisfy the constraint It is preferable to make a computer function as what makes it.

  In the above program, when the service identifier included in the service request or the service identifier included in the service request is a composite service identifier, two or more atomic service identifiers corresponding to the composite service identifier indicate a service function. An abstract service identifier, and the service server determination unit includes an abstract service identifier, a concrete service identifier that identifies one or more specific services that realize the service identified by the abstract service identifier, and the concrete service identifier. Service server management information storage means for storing one or more service server management information having a service server identifier for identifying a service server that performs a service identified by the concrete service identifier, and an abstract service included in the service request Identify by identifier Service identifier acquisition means for acquiring one concrete service identifier from one or more concrete service identifiers for realizing the service to be performed, and a service server for acquiring a service server identifier paired with the concrete service identifier acquired by the service identifier acquisition means The core server transmitting unit reflects the result of the adaptive processing performed by the adaptive processing unit on the service server identified by the service server identifier acquired by the service server identifier acquiring unit. It is preferable to make the computer function as the one that transmits the service request.

  Further, in the above program, the constraint information is external constraint information that is information regarding a constraint indicating that two or more services do not operate at once, or information regarding a constraint indicating that two or more services operate at a time. Including external constraint information, and when the service identifier included in the service request is a composite service identifier, the constraint determination unit acquires two or more atomic service identifiers corresponding to the composite service identifier from the storage medium, It is preferable that the computer is made to function as a judgment as to whether or not the two or more atomic service identifiers satisfy the constraint indicated by the external constraint information.

  FIG. 12 shows the external appearance of a computer that executes the program described in this specification to realize the information system or the like of the above-described embodiment. The above-described embodiments can be realized by computer hardware and a computer program executed thereon. FIG. 12 is an overview diagram of the computer system 340, and FIG. 13 is a block diagram of the computer system 340.

  In FIG. 12, a computer system 340 includes a computer 341 including an FD drive and a CD-ROM drive, a keyboard 342, a mouse 343, and a monitor 344.

  In FIG. 13, in addition to the FD drive 3411 and the CD-ROM drive 3412, the computer 341 stores an MPU 3413, a bus 3414 connected to the CD-ROM drive 3412 and the FD drive 3411, and a program such as a bootup program. A RAM 3416 for temporarily storing application program instructions and providing a temporary storage space; and a hard disk 3417 for storing application programs, system programs, and data. Although not shown here, the computer 341 may further include a network card that provides connection to the LAN.

  A program that causes the computer system 340 to execute functions such as the information system of the above-described embodiment is stored in the CD-ROM 3501 or the FD 3502, inserted into the CD-ROM drive 3412 or the FD drive 3411, and further stored in the hard disk 3417. May be forwarded. Alternatively, the program may be transmitted to the computer 341 via a network (not shown) and stored in the hard disk 3417. The program is loaded into the RAM 3416 at the time of execution. The program may be loaded directly from the CD-ROM 3501, the FD 3502, or the network.

  The program does not necessarily include an operating system (OS) or a third-party program that causes the computer 341 to execute functions such as the information system of the above-described embodiment. The program only needs to include an instruction portion that calls an appropriate function (module) in a controlled manner and obtains a desired result. How the computer system 340 operates is well known and will not be described in detail.

  In the above program, in the step of transmitting information, the step of receiving information, etc., processing performed by hardware, for example, processing performed by a modem or an interface card in the transmission step (only performed by hardware) Processing) is not included.

  Further, the computer that executes the program may be singular or plural. That is, centralized processing may be performed, or distributed processing may be performed.

  Further, in each of the above embodiments, it goes without saying that two or more communication units existing in one apparatus may be physically realized by one medium.

  In each of the above embodiments, each process (each function) may be realized by centralized processing by a single device (system), or by distributed processing by a plurality of devices. May be.

  The present invention is not limited to the above-described embodiments, and various modifications are possible, and it goes without saying that these are also included in the scope of the present invention.

  As described above, the information system according to the present invention can provide a service by performing an adaptive process, which is a process that satisfies a given constraint, even when a service that satisfies the given constraint cannot be selected. It is useful as a large-scale information system.

DESCRIPTION OF SYMBOLS 1 Terminal device 2 Service server 3 Core server 11 Terminal reception part 12 Terminal transmission part 13 Terminal reception part 14 Terminal output part 21 Processing means storage part 22 Service server reception part 23 Service part 24 Service server transmission part 31 Restriction satisfaction information storage part 32 Composite service information storage unit 33 Core server reception unit 34 Constraint determination unit 35 Adaptive processing unit 36 Service server determination unit 37 Core server transmission unit 361 Service server management information storage unit 362 Service identifier acquisition unit 363 Service server identifier acquisition unit

Claims (8)

An information system having one or more terminal devices, one or more service servers, and one or more core servers,
The terminal device
A terminal accepting unit that accepts a service request that is a request for a service having a service identifier for identifying the service;
A terminal transmitter for transmitting the service request to the core server;
A terminal receiving unit for receiving a service result in response to the transmission of the service request;
A terminal output unit for outputting a result of the service received by the terminal reception unit;
The service server
A processing means storage unit capable of storing one or more processing means for performing the service;
A service server receiver that receives the service request from the core server;
In accordance with the service request received by the service server receiving unit, the processing unit of the processing unit storage unit executes the processing unit, performs the service, and obtains the result of the service;
A service server transmission unit for transmitting a service result of the service unit;
The core server is
One or more constraint satisfaction information including a service identifier for identifying a service, constraint information that is information regarding the constraint of the service, and adaptation information that is information for satisfying the constraint when the constraint is not satisfied A constraint satisfaction information storage that can be stored;
A core server receiving unit that receives a service request from the terminal device;
Using the service identifier included in the service request, the constraint information is acquired from the constraint satisfaction information storage unit, and a constraint determination unit that determines whether the constraint specified by the constraint information is satisfied;
When the constraint determination unit determines that the constraint is not satisfied, the service identifier is used to acquire adaptation information from the constraint satisfaction information storage unit, and an adaptation process specified by the adaptation information is performed to perform the constraint An adaptive processing unit to satisfy
A service server determination unit that determines a service server capable of providing a service identified by a service identifier included in the service request;
An information system comprising: a core server transmission unit that transmits a service request reflecting a result of the adaptive processing performed by the adaptive processing unit to the service server determined by the service server determination unit. The constraint information is
Constraint specifying information for specifying a constraint, and inspection information indicating a method for checking whether or not the constraint specified by the constraint specifying information is satisfied,
The constraint determination unit
The inspection information that is paired with the service identifier included in the service request is acquired from the constraint satisfaction information storage unit, the inspection is performed according to the inspection information, and it is determined whether or not the constraint specified by the constraint specifying information is satisfied. The information system according to claim 1. The service identifier included in the service request is:
A composite service that includes multiple services,
The core server is
A composite service information storage unit that stores composite service information that associates a composite service identifier that identifies the composite service with two or more atomic service identifiers that identify two or more atomic services included in the composite service; And
The constraint determination unit
When the service identifier included in the service request is a composite service identifier, two or more atomic service identifiers corresponding to the composite service identifier included in the service request are acquired from the composite service information storage unit, and the two or more Obtaining constraint information that is paired with each atomic service identifier from the constraint satisfaction information storage unit, and determining whether the constraint specified by the constraint information is satisfied,
The adaptive processing unit includes:
When the constraint determination unit determines that the constraint is not satisfied, the adaptive information that is paired with the atomic service identifier that does not satisfy the constraint is acquired from the constraint satisfaction information storage unit, and the adaptation process specified by the adaptation information 3. The information system according to claim 1, wherein the restriction is satisfied to satisfy the restriction. When the service identifier included in the service request or the service identifier included in the service request is a composite service identifier, two or more atomic service identifiers corresponding to the composite service identifier are abstract service identifiers indicating service functions;
The service server determination unit
An abstract service identifier, a concrete service identifier that identifies one or more specific services that realize the service identified by the abstract service identifier, and a service that performs the service identified by the concrete service identifier for each concrete service identifier Service server management information storage means capable of storing one or more service server management information having a service server identifier for identifying a server;
Service identifier acquisition means for acquiring one concrete service identifier from one or more concrete service identifiers for realizing a service identified by an abstract service identifier included in the service request;
Service server identifier acquisition means for acquiring a service server identifier paired with the concrete service identifier acquired by the service identifier acquisition means,
The core server transmitter is
The service request reflecting the result of the adaptive processing performed by the adaptive processing unit is transmitted to the service server identified by the service server identifier acquired by the service server identifier acquiring means. Information system. The constraint information is
Including external constraint information that is information regarding constraints indicating that two or more services do not operate at one time, or external constraint information that is information regarding constraints indicating that two or more services operate at a time,
The constraint determination unit
When the service identifier included in the service request is a composite service identifier, two or more atomic service identifiers corresponding to the composite service identifier are acquired from the composite service information storage unit, and the two or more atomic service identifiers are The information system according to claim 3 or 4, wherein it is determined whether or not the constraint indicated by the external constraint information is satisfied. One or more constraint satisfaction information including a service identifier for identifying a service, constraint information that is information regarding the constraint of the service, and adaptation information that is information for satisfying the constraint when the constraint is not satisfied A constraint satisfaction information storage that can be stored;
A core server receiver that receives a service request from a terminal device;
Using the service identifier included in the service request, the constraint information is acquired from the constraint satisfaction information storage unit, and a constraint determination unit that determines whether the constraint specified by the constraint information is satisfied;
When the constraint determination unit determines that the constraint is not satisfied, the service identifier is used to acquire adaptation information from the constraint satisfaction information storage unit, and an adaptation process specified by the adaptation information is performed to perform the constraint An adaptive processing unit to satisfy
A service server determination unit that determines a service server capable of providing a service identified by a service identifier included in the service request;
A core server comprising: a core server transmitting unit that transmits a service request reflecting a result of the adaptive processing performed by the adaptive processing unit to the service server determined by the service server determining unit. The core server which comprises the information system in any one of Claims 1-5. On the recording medium,
One or more constraint satisfaction information including a service identifier for identifying a service, constraint information that is information regarding the constraint of the service, and adaptation information that is information for satisfying the constraint when the constraint is not satisfied Storing and
A service providing method realized by a core server receiving unit, a constraint determining unit, an adaptive processing unit, a service server determining unit, and a core server transmitting unit,
The core server receiving unit receives a service request from a terminal device;
The constraint determination unit obtains constraint information from the recording medium using a service identifier included in the service request, and determines whether or not the constraint specified by the constraint information is satisfied.
The adaptation processing unit acquires adaptation information from the recording medium using the service identifier when it is determined that the constraint is not satisfied in the constraint determination step, and performs an adaptation process specified by the adaptation information. An adaptive processing step to perform and satisfy the constraints;
The service server determining unit determines a service server capable of providing a service identified by a service identifier included in the service request; and
The core server transmission unit includes a core server transmission step of transmitting, to the service server determined in the service server determination step, a service request reflecting a result of the adaptive processing performed in the adaptation processing step. Method.

Images