JP2018169900A - Information providing device, information providing method, program, and information providing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information providing device, an information providing method, a program, and an information providing system that provide information in which a user is interested.SOLUTION: An information providing device 2 comprises: a storage part 22 that stores provision information to be provided to a user; an information acquisition part 231 that acquires state information indicating the state of collection of information on moving performed by the user; an estimation part 232 that estimates the user's moving consideration stage on the basis of the state information acquired by the information acquisition part; and an information providing part 233 that provides the provision information associated with the moving consideration stage estimated by the estimation part 232 to the user's information terminal.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an information providing apparatus, an information providing method, a program, and an information providing system that provide information for moving.

  2. Description of the Related Art Conventionally, systems that provide information necessary for moving are known. Patent Document 1 discloses a residence information providing system for providing information related to a residence at a new address. In a conventional system, information on a residence that satisfies a condition is provided according to a result of a user inputting a location condition, a building condition, a price condition, and the like.

JP2012-190210A

  In the conventional system, information corresponding to the result input by the user is provided. In this way, the user can obtain information of interest. However, the information that is of great interest to the user may vary depending on how specifically the user is considering the move, but in the conventional system, the same information is provided to the user. Therefore, there is a problem that information that is not of interest to the user may be provided.

  Therefore, the present invention has been made in view of these points, and provides an information providing apparatus, an information providing method, a program, and an information providing system for making it easy to provide information that a user is interested in. Objective.

  An information providing apparatus according to a first aspect of the present invention includes a storage unit that stores provision information to be provided to a user, an acquisition unit that acquires state information indicating a collection state of information related to moving by the user, and the information acquisition unit Based on the acquired state information, an estimation unit that estimates a user's move-in examination stage, and information provision that provides the information terminal of the user with the provision information associated with the move-out examination stage estimated by the estimation unit Part.

  The information acquisition unit acquires one or more search keywords input by the user to view information related to the move, and the estimation unit estimates the move examination stage based on the one or more search keywords. Also good.

  The estimation unit may acquire a plurality of the search keywords and estimate the move-in consideration stage based on a change in tendency between the plurality of search keywords. In addition, the estimation unit may estimate the relocation examination stage based on a region name included in the one or more search keywords. Furthermore, the estimation unit may estimate the move-in consideration stage based on a search keyword input simultaneously with the area name.

  The information acquisition unit may acquire information related to a record of participation in a briefing session related to a move, and the estimation unit may estimate the move consideration stage based on the participation record.

  The said estimation part may estimate the said moving examination stage based on the display content when the said user stops browsing while browsing the information regarding the said moving. The information providing unit displays the information displayed on the information terminal when the user stops browsing when the user stops browsing within a predetermined time after the user starts browsing the information about the move. May be updated.

  The information providing unit may determine whether to update the content based on the attribute of the user. In addition, the information providing unit provides the provision information for proceeding to the next stage of the moving examination stage after providing the predetermined providing information associated with the moving examination stage estimated by the estimation unit. May be.

  The information providing method according to the second aspect of the present invention includes a step of acquiring state information indicating a collection state of information on moving by a user, which is executed by a computer, and considering the moving of the user based on the acquired state information. A step of estimating a stage, and a step of providing provision information stored in a storage unit in association with the estimated moving-out examination stage to the information terminal of the user.

  According to a third aspect of the present invention, there is provided a program for an information acquisition unit that acquires state information indicating a collection state of information related to moving by a user, based on the state information acquired by the information acquisition unit. It is made to function as an estimation part which estimates a moving examination stage, and an information provision part which provides provision information associated with the moving examination stage estimated by the estimating part to the information terminal of the user.

  The information provision system of the 4th aspect of this invention is an information provision system provided with an information terminal and the information provision apparatus which provides information to the said information terminal, Comprising: The said information provision apparatus is provided with a user. Based on the status information acquired by the information acquisition unit, the information acquisition unit for acquiring the status information indicating the collection status of the information related to the transfer by the user, and the user's move-out examination stage The estimation unit to be estimated and the provision information associated with the moving-out examination stage estimated by the estimation unit are provided to the information terminal of the user.

  According to the present invention, there is an effect that it is easy to provide information that the user is interested in.

It is a figure which shows the structure of the information provision system of this embodiment. It is a figure which shows the structure of an information terminal. It is a figure which shows the structure of an information provision apparatus. It is a figure which shows an example of the stage estimation table which an estimation part uses in order to estimate a moving examination stage. It is a figure which shows an example of the table for information selection referred when an information provision part selects provision information. It is a figure which shows an example of the table for information selection with which the examination stage and the attribute of provision information were linked | related. It is a flowchart of the operation | movement which an information provision apparatus transmits provision information to an information terminal.

[Outline of Information Providing System S]
FIG. 1 is a diagram showing a configuration of the information providing system S of the present embodiment. The information providing system S includes an information terminal 1 (1a, 1b), an information providing device 2, a regional information server 3, and an administrative agency terminal 4. The information terminal 1 can send and receive data to and from the information providing device 2 via the network N. The network N includes a mobile phone network or the Internet.

  The information terminal 1 is a terminal that can display information provided from the information providing apparatus 2, and is, for example, a smartphone, a tablet terminal, or a personal computer. The user of the information terminal 1 can obtain information related to moving by accessing the moving information providing site provided by the information providing device 2 and logging in. In the present specification, information provided by the information providing apparatus 2 to the information terminal 1 is referred to as provision information.

  The information providing apparatus 2 is a server that stores various types of provision information in association with attribute information indicating the content of information. The information providing device 2 transmits the provided information to the information terminal 1 in response to a request from the information terminal 1.

  In order to browse the provided information, the user inputs a keyword for searching for information on the information terminal 1. The information terminal 1 transmits the input keyword to the information providing device 2. The information providing device 2 transmits to the information terminal 1 the provision information selected based on the keyword among the many provision information stored in advance in its own server or another server. The user may receive provision of provision information by selecting a title of the provision information displayed on the menu screen provided from the information provision apparatus 2 to the information terminal 1.

  The information providing apparatus 2 according to the present embodiment is characterized in that a state in which the user is considering a moving destination is estimated, and providing information suitable for the estimated moving change examination stage is provided to the information terminal 1. Although details will be described later, the information providing apparatus 2 estimates the user's move-out examination stage based on state information indicating what information the user is collecting about the move.

  The regional information server 3 includes, for example, a plurality of servers managed by local governments, and stores regional information provided by each local government. For example, the regional information server 3 provides the information providing apparatus 2 with information related to the income and expenditure such as the price level of the region and working conditions.

The administrative agency terminal 4 is, for example, a computer that can be used by local government or administrative staff. For example, the staff member can input information regarding the participants of the briefing session to the administrative agency terminal 4 when the briefing session regarding the relocation is held. The information regarding the participants is, for example, user attributes, the contents of the briefing, the number of times of participation in the briefing, or questions from the user to the staff.
Hereinafter, details of the information terminal 1 and the information providing apparatus 2 will be described.

[Configuration of information terminal 1]
FIG. 2 is a diagram illustrating a configuration of the information terminal 1. The information terminal 1 includes an operation unit 11, a display unit 12, a communication unit 13, a storage unit 14, and a control unit 15.

The operation unit 11 is a device for a user to operate, such as a keyboard, a mouse, or a touch panel. The operation unit 11 notifies the control unit 15 of information indicating the user operation content. The user uses the operation unit 11 to input a keyword for selecting provided information to be browsed and an instruction for selecting provided information.
The display unit 12 is a display. The display unit 12 displays, for example, information provided from the information providing device 2 based on the control of the control unit 15.

  The communication unit 13 is a communication interface for transmitting and receiving data to and from the information providing apparatus 2 via the network N. When the information terminal 1 is a smartphone or a tablet terminal, the communication unit 13 includes a wireless communication module for connecting to a mobile phone network or a Wi-Fi (registered trademark) access point. When the information terminal 1 is a personal computer, the communication unit 13 includes a LAN (Local Area Network) controller for connecting to a wired network. The information terminal 1 may be a smartphone or a tablet terminal having a wireless communication function, and the communication unit 13 may include a wireless communication controller for accessing a wireless communication line.

  The storage unit 14 includes a ROM (Read Only Memory) and a RAM (Random Access Memory). The storage unit 14 stores a program executed by the control unit 15. The storage unit 14 temporarily stores information provided from the information providing apparatus 2.

  The control unit 15 is, for example, a CPU (Central Processing Unit). The control unit 15 controls the operation unit 11, the display unit 12, and the communication unit 13 by executing the program stored in the storage unit 14, and displays the provision information in the move destination candidate site designated by the information terminal 1. 12 is displayed.

[Configuration of Information Providing Device 2]
FIG. 3 is a diagram illustrating a configuration of the information providing apparatus 2. The information providing apparatus 2 includes a communication unit 21, a storage unit 22, and a control unit 23. The control unit 23 includes an information acquisition unit 231, an estimation unit 232, and an information provision unit 233.

  The communication unit 21 is a communication interface for transmitting and receiving data to and from the information terminal 1 via the network N. The communication unit 21 includes, for example, a LAN controller. The communication unit 21 inputs data received from the information terminal 1 to the information acquisition unit 231. The communication unit 21 transmits data input from the information providing unit 233 to the information terminal 1.

  The storage unit 22 is a storage medium including a hard disk, a ROM, and a RAM. The storage unit 22 stores a program executed by the control unit 23. In addition, the storage unit 22 stores various types of provision information to be provided to a user who uses the information terminal 1. The storage unit 22 stores attribute information indicating the content of the provided information in association with each provided information. In addition, the storage unit 22 stores a stage estimation table used by the estimation unit 232 to estimate the user's move-out examination stage, and an information selection table used by the information provision unit 233 to select provision information. .

  The control unit 23 is, for example, a CPU. The control unit 23 functions as an information acquisition unit 231, an estimation unit 232, and an information provision unit 233 by executing the program stored in the storage unit 22.

  The information acquisition unit 231 acquires state information indicating a collection state of information regarding moving by the user. The information acquisition unit 231 is, for example, a keyword input when the user acquires provided information from the information providing apparatus 2, a keyword input when the user acquires information at another site, or participation in a briefing session on relocation Information indicating results is acquired as state information. The information acquisition unit 231 inputs the acquired state information to the estimation unit 232.

  Based on the state information input from the information acquisition unit 231, the estimation unit 232 estimates the moving examination stage. For example, the estimation unit 232 estimates the move-out examination stage based on one or more search keywords input by the user to view information related to the move-in.

  FIG. 4 is a diagram illustrating an example of a stage estimation table used by the estimation unit 232 to estimate the move-in examination stage. In the table shown in FIG. 4, the search keyword used by the user is associated with the evaluation value indicating the evaluation result at the move-out consideration stage. The estimation unit 232 estimates that the higher the evaluation value associated with the search keyword input by the user is, the more the examination of the move by the user is proceeding, and sends information indicating the estimated move-out examination stage to the information providing unit 233. Notice.

  For example, when a search keyword indicating relocation such as “move” or “migrate” is input alone, the estimation unit 232 estimates that this is the first stage in which the user has started to be interested in relocation or relocation. The estimation unit 232 may estimate the move-out examination stage based on the area name included in one or more search keywords. For example, when a search keyword including both a word indicating relocation and a region name (for example, Kagawa, Osaka) is input, the estimation unit 232 proceeds to the second stage in which the user has started studying the relocation destination. Estimated.

  The estimation unit 232 may estimate the moving-in consideration stage based on the search keyword input simultaneously with the area name. For example, when a search keyword for confirming an item that affects the life after moving, such as “income + Kagawa”, is input together with the area name, the estimation unit 232 starts to specifically examine the moving It is estimated that the third stage has been completed. Similarly, the estimation unit 232 also uses a search keyword that combines a facility name and a region name that may be used after moving, such as “elementary school + Kagawa” and “hospital + Kagawa”. It is presumed that the user has shifted to the third stage where the study on the move is started.

  The estimation unit 232 moves the user when a search keyword for confirming an item that increases interest when assuming a life after moving, such as “recruitment + Kagawa” and “rental + Kagawa”. I presume that this is the fourth stage that has begun to have a strong will.

  The estimation unit 232 may estimate the move-out examination stage based on a change in tendency between a plurality of search keywords. For example, the estimation unit 232 has, for example, a search keyword input from the information acquisition unit 231 in the past even though the ratio of the search keyword to which the evaluation value “1” is assigned in FIG. When the ratio of search keywords to which "" is assigned increases, it is presumed that the user's move-out examination stage has changed, and that the move has been specifically studied.

  In order to improve the estimation accuracy, the estimation unit 232 uses the ratio of the number of searches performed by the user within a predetermined period and the cumulative value of the evaluation values (that is, the cumulative value of the evaluation values divided by the number of searches) Based on this, the relocation examination stage may be estimated. For example, when the number of times that the user searches within a predetermined period is 10 times and the search keyword “moving” is input only once during that period, the estimating unit 232 sets the moving-in consideration index to 1 ÷ 10 = 0. 1 is calculated. In addition, when “elementary school + Kagawa” and “recruitment + Kagawa” are input once each out of 10 times, the estimation unit 232 calculates the relocation examination index as (2 + 3) ÷ 10 = 0.5. The estimation unit 232 can improve the estimation accuracy by estimating the moving examination stage based on the size of the moving examination index.

  The estimation unit 232 is acquired by the information acquisition unit 231 from an external server such as the regional information server 3 illustrated in FIG. 1, an external computer such as the administrative agency terminal 4, or an administrator computer of the information providing device 2. Based on the information thus obtained, the move-out examination stage may be estimated. For example, when an administrative agency holds a briefing on moving to a jurisdiction of the administrative agency (including consultations for individual users), the official of the administrative agency Information related to the user who participated in (such as user attributes, number of times of participation in the briefing session, questions from the user to the staff) is input to the administrative agency terminal 4 of the administrative agency. Thereafter, the information acquisition unit 231 acquires information about the user input by the staff from the administrative agency terminal 4 and outputs the information to the estimation unit 232.

  The estimation unit 232 includes the number of times the user has participated in the briefing session related to the change of information input from the information acquisition unit 231 and the participation record in the briefing session related to the change such as the content of the briefing session in which the user participated. Based on the above, the move-out examination stage is estimated. The estimation unit 232 estimates that the more the number of times the user has participated in the briefing session regarding the move, the more the study regarding the move is progressing. In addition, in the estimation unit 232, the relocation examination stage of the user who participates in the briefing session in which detailed contents regarding the relocation are provided is ahead of the relocation examination stage of the user who participates in the briefing session regarding the outline of the relocation. Estimated. Furthermore, the estimation unit 232 may estimate the move-out examination stage based on the question contents from the user in the briefing session. For example, the estimation unit 232 may include a user who has made a general question such as the characteristics of a new address area and a user who has made an individual specific question such as a procedure for moving based on the user's family structure. The estimation unit 232 can estimate that the latter user is in the move-out examination stage more than the former user.

  The estimation unit 232 may estimate the user's move-out examination stage by combining the search keyword input by the user at the time of information search and the participation record in the briefing session related to the move. By doing in this way, the estimation part 232 can further improve the estimation precision in the moving examination stage.

The information providing unit 233 provides the user information terminal 1 with the provision information associated with the move-out examination stage estimated by the estimation unit 232.
FIG. 5 is a diagram illustrating an example of an information selection table that is referred to when the information providing unit 233 selects provided information. In the information selection table shown in FIG. 5, the move-out examination stage and one or more provision information are associated with each other.

  The information providing unit 233 selects the provision information associated with the move-out examination stage estimated by the estimation unit 232 from among a plurality of pieces of provision information included in the information selection table. For example, when the estimation unit 232 estimates that the user moving examination stage is the first stage, the information providing unit 233 selects provision information having an attribute corresponding to the first stage. The provided information having the attribute corresponding to the first stage is information including, for example, basic knowledge about moving, and merit of moving. Similarly, when the estimation unit 232 estimates that the user's move-out examination stage is the second stage, the information providing unit 233 includes notes for explaining to the family, notes for selecting a move destination, and the like. Select an advertisement.

  The information providing unit 233 may provide the provision information for proceeding to the next stage after the moving-out examination stage after providing the predetermined providing information associated with the moving-out examination stage estimated by the estimating unit 232. For example, the information providing unit 233 provides the first stage user with provision information that recommends selecting a move destination after providing the provision information regarding the outline of the move. By doing in this way, the information provision apparatus 2 can accelerate | urge | promote that a user examines about a move concretely.

  In the information selection table, the attribute of the provision information may be associated in place of the information for directly specifying the provision information in association with the user's move-out examination stage. FIG. 6 is a diagram illustrating an example of an information selection table in which an examination stage and an attribute of provided information are associated with each other. The information providing unit 233 refers to the information selection table shown in FIG. 6 and specifies the attribute of the provided information to be provided to the user moving examination stage estimated by the estimating unit 232. And the information provision part 233 selects the provision information which has the specified attribute from several provision information. By doing in this way, in the information selection table, it is not necessary to associate information for specifying individual provision information in advance with the move-out examination stage. Therefore, the information providing apparatus 2 can provide the provision information suitable for the user's move-out examination stage only by adding the metadata indicating the attribute to the provision information by the company that provides the provision information.

[Operation Flowchart of Information Providing Device 2]
FIG. 7 is a flowchart of an operation in which the information providing apparatus 2 transmits the provided information to the information terminal 1. FIG. 7 starts from the time point when the information acquisition unit 231 acquires the state information (S11). Based on the state information acquired by the information acquisition unit 231, the estimation unit 232 estimates the user's move-out examination stage (S 12). The estimation unit 232 may estimate the move examination stage each time the information acquisition unit 231 obtains new state information, or may periodically estimate the move examination stage. The estimation unit 232 causes the storage unit 22 to store information indicating the estimated move-out examination stage (S13).

  Subsequently, when the information acquisition unit 231 receives a request for information on moving from the information terminal 1 (Yes in S14), the information providing unit 233 is stored in the storage unit 22 in association with the user who has requested information on moving. By reading the information indicating the moving-in examination stage, the moving-in examination stage of the user is specified (S15). Subsequently, the information provision unit 233 refers to the information selection table and selects the provision information corresponding to the move-out examination stage (S16). The information providing unit 233 transmits the selected provided information to the information terminal 1 (S17). The information providing apparatus 2 repeats the processing from steps S11 to S17 until the user withdraws from the service using the information providing system S (No in S18).

[Modification]
In the above description, the keyword input when the estimation unit 232 acquires the provision information from the information providing device 2, the keyword input when the user acquires the information at another site, or the explanatory meeting regarding the relocation We explained an example of estimating the move-out examination stage using information indicating the participation record. The estimation unit 232 may estimate the moving examination stage based on other information. For example, the estimation unit 232 may estimate the moving examination stage based on the display contents at the time when the user stops browsing while browsing the information related to moving. Specifically, when the estimation unit 232 stops browsing the provided information corresponding to the predetermined moving-out examination stage until the predetermined time has elapsed since the user started browsing, there is one moving-out examination stage. Presumed to be the previous stage.

  For example, the estimation unit 232 receives a request for other information from the information acquisition unit 231 within a predetermined time after the information providing unit 233 transmits “notes on moving” to the information terminal 1. It is determined that the user has stopped viewing “notes to be taken when moving”. When the user stops browsing at a timing shortly after the information providing unit 233 provides the “notes on moving” provided in the fourth stage to the information terminal 1, the estimating unit 232 Estimate that it is a stage.

  In addition, the information providing unit 233 displays the content displayed on the information terminal 1 when the user stops browsing when the user stops browsing within a predetermined time after the user starts browsing the information about moving. It may be updated. For example, the information providing unit 233 notifies the administrator of the information providing apparatus 2 of information for specifying the provided information that the user has stopped browsing. And the information provision part 233 updates the provision information which the user stopped browsing with the content corrected by the administrator of the information provision apparatus 2. FIG. For example, if the user stops browsing while the salary condition included in the job offer information of the new address is displayed, the salary condition may be inappropriate. Therefore, the information providing unit 233 can provide the information terminal 1 with the provided information with the updated salary conditions. In this way, the information providing unit 233 can provide more appropriate information to the user.

  The information providing unit 233 may determine whether to update the content of the provided information based on the user's attribute, instead of updating the provided information uniformly when the user stops browsing. For example, if the salary condition included in the screen on which the user stopped browsing is inappropriate when considering attributes such as the skill of the user, it is determined that the provision information needs to be updated. When the information providing unit 233 determines that the provided information needs to be updated, the information providing unit 233 notifies the administrator of the information providing apparatus 2 to that effect. By doing in this way, the information provision apparatus 2 can provide the information suitable for each user.

[Effects of information providing apparatus 2]
As described above, in the information providing apparatus 2 according to the present embodiment, the information acquisition unit 231 acquires state information indicating the collection state of information related to moving by the user, and the estimation unit 232 is based on the state information. Estimate the move-out examination stage. And the information provision part 233 provides the information terminal 1 with the provision information linked | related with the moving-out examination stage which the estimation part 232 estimated. Since the information providing apparatus 2 has such a configuration, it is possible to provide the user with information suitable for the stage where the user is considering moving. Therefore, there is a high possibility that the user is interested in the provided information, and the information providing apparatus 2 can provide information with high added value for the user.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment, A various deformation | transformation and change are possible within the range of the summary. is there. For example, the specific embodiments of device distribution / integration are not limited to the above-described embodiments, and all or a part of them may be configured to be functionally or physically distributed / integrated in arbitrary units. Can do. In addition, new embodiments generated by any combination of a plurality of embodiments are also included in the embodiments of the present invention. The effect of the new embodiment produced by the combination has the effect of the original embodiment.

DESCRIPTION OF SYMBOLS 1 Information terminal 2 Information provision apparatus 11 Operation part 12 Display part 13 Communication part 14 Storage part 15 Control part 21 Communication part 22 Storage part 23 Control part 231 Information acquisition part 232 Estimation part 233 Information provision part

Claims (13)

A storage unit for storing provided information to be provided to the user;
An information acquisition unit for acquiring state information indicating a collection state of information on moving by the user;
Based on the state information acquired by the information acquisition unit, an estimation unit that estimates a user moving examination stage;
An information providing unit for providing the provision information associated with the moving examination stage estimated by the estimating unit to the information terminal of the user;
An information providing apparatus. The information acquisition unit acquires one or more search keywords input by the user to view information on moving,
The estimation unit estimates the moving examination stage based on the one or more search keywords.
The information providing apparatus according to claim 1. The estimation unit acquires a plurality of the search keywords, and estimates the relocation examination stage based on a change in tendency between the plurality of search keywords.
The information providing apparatus according to claim 2. The estimation unit estimates the moving examination stage based on a region name included in the one or more search keywords.
The information providing apparatus according to claim 2 or 3. The estimation unit estimates the moving examination stage based on a search keyword input simultaneously with the region name.
The information providing apparatus according to claim 4. The information acquisition unit acquires information related to participation in a briefing session related to moving,
The estimation unit estimates the moving examination stage based on the participation record,
The information providing apparatus according to any one of claims 1 to 5. The estimation unit estimates the moving examination stage based on display contents at the time when the user stopped browsing while browsing the information on the moving.
The information providing apparatus according to any one of claims 1 to 6. The information providing unit displays the information displayed on the information terminal when the user stops browsing when the user stops browsing within a predetermined time after the user starts browsing the information about the move. Update,
The information providing apparatus according to claim 7. The information providing unit determines whether or not to update the content based on the attribute of the user.
The information providing apparatus according to claim 8. The information providing unit provides the provision information for proceeding to the next stage of the moving-out examination stage after providing the predetermined providing information associated with the moving-out examination stage estimated by the estimation unit;
The information providing device according to any one of claims 1 to 9. The computer runs,
Obtaining state information indicating a collection state of information on moving by the user;
Based on the acquired state information, estimating the moving examination stage of the user;
Providing provision information stored in a storage unit in association with the estimated moving-out examination stage to the information terminal of the user;
A method for providing information. Computer
An information acquisition unit for acquiring state information indicating a collection state of information on moving by the user;
Based on the state information acquired by the information acquisition unit, an estimation unit that estimates the user moving examination stage, and provided information associated with the moving examination stage estimated by the estimation unit to the information terminal of the user Information provision department to provide,
Program to function as. An information providing system comprising: an information terminal; and an information providing device that provides information to the information terminal,
The information providing apparatus includes:
A storage unit for storing provided information to be provided to the user;
An information acquisition unit for acquiring state information indicating a collection state of information on moving by the user;
Based on the state information acquired by the information acquisition unit, an estimation unit that estimates the user's move-out examination stage;
An information providing unit for providing the provision information associated with the moving examination stage estimated by the estimating unit to the information terminal of the user;
An information providing system.

Images