JP2013135350A - Information processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system capable of processing emergency information related to a state of emergency while effectively utilizing limited information communication resources when the emergency information is shared by people.SOLUTION: On the basis of a designation time period that is a time period to which an origination time point or a recognition time point of emergency information belongs, and a terminal identifier, a region to which a portable information terminal 200 belongs can be estimated from a plurality of regions. In addition, on the basis of the number of portable information terminals (a value of a first variable x) that are information origination sources in the designation time period, priorities of the respective regions are evaluated according to a decrease function. Depending on the evaluation result of the priorities, an order of priority for providing the emergency information to the portable information terminals 200 belonging to the region is controlled.

Description

  The present invention relates to a system that collects emergency information about an emergency from people and executes information processing for causing the people to share the collected information.

  A technology has been proposed that collects disaster information or support information from people in the affected area after a disaster through a mobile phone terminal, and discloses the collected information to people in the affected area through a mobile phone terminal. (See Patent Document 1).

JP 2006-217411 A

  However, after the occurrence of an emergency such as a disaster, a part of information communication resources such as a server computer that manages information communication is damaged by this emergency, and the remaining information communication resources are affected by this emergency. There may be situations where it is difficult to provide information to all the people in the region.

  Therefore, the present invention solves the problem of providing a system capable of processing emergency information while effectively utilizing limited information communication resources when sharing emergency information related to emergency situations. Let it be an issue.

  An information processing system of the present invention for solving the above problem is a system that collects emergency information about an emergency from people and executes information processing for sharing the collected information with people. A terminal identifier for identifying each of the portable information terminals, a database configured to store each of a plurality of regions in association with each of a plurality of periods, and among the plurality of portable information terminals A first communication element configured to recognize the emergency information and the terminal identifier of the portable information terminal by communication with at least some of the portable information terminals; and recognized by the first communication element. The terminal identifier and the time when the emergency information is transmitted from the portable information terminal or recognized together with the terminal identifier by the first communication element. Accordingly, by referring to the database, the portable information terminal, which is the source of emergency information, identifies the area associated with the terminal identifier and the designated period to which the time point belongs, among the plurality of areas. First, the number of the emergency information in the designated period or the number of the portable information terminals that are the transmission source in each of the plurality of areas is calculated as a value of a first variable after being estimated as an area to which the information belongs. Based on one information processing element and the value of the first variable obtained by the first information processing element, the priority is evaluated according to a decreasing function using the first variable as a variable, and the evaluation result is stored in the database. A second information processing element configured to save, and the emergency transmitted from at least some of the plurality of portable information terminals According to the information request signal, referring to the database, the higher the priority evaluated by the second information processing element for the period to which the request signal was transmitted or received belongs, or the period immediately before it, A second communication element configured to preferentially provide the emergency information to the portable information terminal identified by the terminal identifier associated with the area. And

  According to the information processing system of the present invention, based on a designated period, which is a period to which emergency information is transmitted or recognized, and a terminal identifier, a region to which the portable information terminal belongs can be estimated from a plurality of regions. . For this reason, the portable information terminal that is the source of emergency information may not have the position measurement function, and the position information can be omitted from the information to be communicated. Mitigation is achieved.

  “Emergency information” here refers to information on the contents, timing and location of an emergency, as well as information on support for people who have been damaged by an emergency. Includes any information useful or necessary for

  Also, the priority of each region is evaluated according to the decreasing function of the first variable based on the number of portable information terminals (value of the first variable) that are information transmission sources in the designated period. For this reason, the lower the value of the first variable is, the higher the priority is evaluated, and the emergency information is preferentially provided to the portable information terminal associated with the region. This is likely because it is difficult to exchange information spontaneously in areas where the number of emergency information sources is small, such as the fact that an emergency has not occurred. Because it is expensive.

  Thereby, in view of the degree of expectation for voluntary information sharing, a situation in which the priority of each region is inappropriately evaluated can be avoided. Also, in areas where the number of people who became the source of emergency information was large, the people who were there became the source of such information depending on the situation where it was difficult to obtain emergency information through a portable information terminal. It is urged to search for people, and as a result, spontaneous information exchange is expected. Therefore, even when information communication resources are partially damaged due to an emergency, people can share emergency information while effectively utilizing the remaining limited information communication resources.

  The first information processing element estimates each region to which each of the plurality of portable information terminals in the specified period belongs for each of the plurality of regions by referring to the database, and then each of the plurality of regions. The number of the portable information terminals in the specified period is determined as a value of a second variable, and the second information processing element is based on the value of the second variable determined by the first information processing element. A multivariable function having the second variable as a variable in addition to the first variable, wherein the priority is evaluated according to a decreasing function of the second variable, and the evaluation result is stored in the database. It is preferable to be configured.

  According to the information processing system configured as described above, the priority is evaluated according to the multivariable function that is a decreasing function of the second variable, based on the number of portable information terminals (value of the second variable) belonging to each region in the specified period. The For this reason, a priority is evaluated so low that it is an area where the value of the 2nd variable is large, and provision of emergency information to a personal digital assistant which belongs to the area concerned is postponed. This is because, while the number of emergency information sources is small, there is a high probability that a certain amount of spontaneous information exchange is promoted in an area where there are many people.

  As a result, in view of the degree of expectation for voluntary information sharing, it is possible to avoid a situation in which the priority of each region is inappropriately evaluated, or the difference in priority between regions is inappropriately excessive or excessive. sell. As a result, even if information communication resources are partially damaged due to an emergency, people can share emergency information while effectively utilizing the remaining limited information communication resources.

  The database is further configured to store a difficulty level of movement of a person between the plurality of regions as a value of a third variable, and the second information processing element is configured to store the third variable based on the value of the third variable. It is preferable that the priorities of the two regions are evaluated so that the deviation of the priorities of the two regions is determined according to the increasing function of the two regions.

  According to the information processing system of the configuration, the lower the difficulty (the value of the third variable) that people move between any two regions in the specified period, the closer the respective priorities of the two regions are to each other Is evaluated. For this reason, the situation where the priority which provides emergency information with respect to the portable information terminal which belongs to the said 2 area diverges is avoided. This is because in areas where people can easily come and go with other areas, there is a high probability that voluntary information exchange accompanying people's traffic will be promoted.

  As a result, in view of the degree of expectation for voluntary information sharing, it is possible to avoid a situation in which the priority of each region is inappropriately evaluated, or the difference in priority between regions is inappropriately excessive or excessive. sell. As a result, even if information communication resources are partially damaged due to an emergency, people can share emergency information while effectively utilizing the remaining limited information communication resources.

  The first information processing element is preferably configured to correct the value of the third variable stored in the database based on the content of the emergency information.

  According to the information processing system configured as described above, the value of the third variable can be fluidly changed in response to a situation in which the degree of difficulty in passing people between regions varies due to an emergency. Thereby, in view of the degree of expectation for voluntary information sharing, a situation in which the priority of each region is inappropriately evaluated can be avoided. As a result, even if information communication resources are partially damaged due to an emergency, people can share emergency information while effectively utilizing the remaining limited information communication resources.

1 is a configuration explanatory diagram of an information processing system as an embodiment of the present invention. FIG. Explanatory drawing regarding the function of an information processing system. Explanatory drawing regarding the structure of the preservation | save data in a database. Explanatory drawing regarding the action pattern represented by the registration information of a database. Explanatory drawing regarding the variable value evaluation method.

(Configuration of Information Processing System as One Embodiment of the Present Invention)
An information processing system 100 as an embodiment of the present invention shown in FIG. 1 includes one or a plurality of servers having a function of communicating with each of a plurality of portable information terminals (clients) 200 via a network. It is configured. The information processing system 100 includes a database 110, a first communication element 111, a second communication element 112, a first information processing element 121, and a second information processing element 122.

  The database 110 is configured by a storage device including a memory that is a component of the server. The database 110 is configured to store a terminal identifier for identifying each of the plurality of portable information terminals 200, each of a plurality of regions, and each of a plurality of periods. For example, when the portable information terminal 200 has a telephone function, a telephone number may be adopted as the terminal identifier. Further, when the portable information terminal 200 has an electronic mail communication function, a mail address may be adopted as a terminal identifier.

As shown in FIG. 3, the terminal identifier “XX... X1” is associated with each of a plurality of periods T ₁ , T ₂ , T ₃ , and each of the regions A ₆ , A ₆ , A _4. Stored in the database 110. Similarly, the terminal identifier “XX... X2”, each of a plurality of periods T ₁ , T ₂ , T ₃ ... And each of the regions A ₁ , A ₇ , A _7. Has been.

As shown in FIGS. 4A to 4C, this is because the owner of the portable information terminal 200 identified by the terminal identifier “XX... X1” is the area in the periods T ₁ and T ₂ . This indicates that the person has an action pattern of being in A ₆ (for example, an area where his / her home is located) and being in area A ₄ (for example, an area having a school or work place) in the period T ₃ . Also, the behavior pattern of the owner of the portable information terminal 200 that is identified by the terminal identifier "○○ ‥ X2" is cage in the area A ₁ in period T _1, in the period T ₂ and T ₃ are in the region A ₇ It represents having.

These behavior patterns are registered in advance in the database 110 with the consent of the owner or user of each portable information terminal 200 in preparation for the occurrence of an emergency such as a disaster or accident. The period T _i is defined by dividing a certain period such as one day, one week, or one month into an arbitrary length such as 10 minutes, 30 minutes, or 1 hour. The lengths of the periods T _i and T _j (i ≠ j) may be the same or different. The size and shape of each area can be adjusted arbitrarily.

  Each of the first communication element 111, the second communication element 112, the first information processing element 121, and the second information processing element 122 is a CPU (central processing unit) that is a component of the server and a program executed by the CPU. Is constituted by the memory in which the data is stored. The first communication element 111, the second communication element 112, the first information processing element 121, and the second information processing element 122 may be configured by a single computer or CPU collectively, and each may be capable of separate mutual communication. It may be configured by a simple computer or CPU. One element may be constituted by one computer CPU, or may be constituted by a plurality of computers or CPUs capable of mutual communication.

  Each of the first communication element 111, the second communication element 112, the first information processing element 121, and the second information processing element 122 is configured to execute a responsible calculation process described later. Here, “configured” so that each element executes the responsible arithmetic processing means that the CPU constituting each element reads the necessary software from the memory and executes the responsible arithmetic processing according to the software. Means “programmed”.

(Information processing system functions)
The function of the information processing system having the above configuration will be described.

  First, the “first communication process” is executed by the first communication element 111 (FIG. 2 / STEP01). Specifically, emergency information regarding an emergency and the terminal identifier of the portable information terminal 200 are recognized by communication with at least some of the plurality of portable information terminals 200. For example, emergency information is input to the portable information terminal 200, and the emergency information is transmitted from the portable information terminal 200 to the information processing system 100 via an information communication network such as a telephone line or the Internet.

  The emergency information includes “… a fire has occurred in the town”, “hazardous substances have been confirmed in the town”, “the river has been flooded in the town”, “the road is closed due to heavy rain”, “the road” In addition to information indicating the contents of emergency situations such as “has collapsed in the vicinity”, it also includes information on emergency response measures such as “evacuation site is a public hall” and “distribution of relief supplies in the park”.

  When the database 110 stores an emergency information content and a code (information identifier) corresponding to the content, the first communication element 111 receives the code from the portable information terminal 200, and the received code The content of emergency information associated with and stored in the database 110 may be recognized. In this case, by combining the information content corresponding to the code and the estimated location area of the portable information terminal 200 that is the source of the code, a group of emergency information in which the area is added as part of the content May be treated as

  By assigning such codes only to multiple types of emergency information that are highly urgent or necessary, it is possible to avoid the situation where the content of emergency information collected is diversified and information that is not useful is flooded. Can be done.

  Next, the “first information processing” for determining the variable value is executed by the first information processing element 121 (FIG. 2 / STEP02). Specifically, the database 110 is referred to based on the terminal identifier recognized by the first communication element 111 and the point in time when the emergency information is recognized together with the terminal identifier by the first communication element 111. When the transmission time is attached to the emergency information, the database 110 may be referred to based on the transmission time.

Thereby, the area | region linked | related with the designated period to which the said terminal identifier and the said time point belong among several areas is estimated as an area where the portable information terminal which is a transmission source of emergency information belongs. On that basis, the number of portable information terminal which is emergency information or source thereof in the specified time period for each of the plurality of regions is determined as the first value of the variable x _one.

In addition, by referring to the database 110, the region to which each of the plurality of portable information terminals 200 in the specified period belongs is estimated for each of the plurality of regions. On top of that, the number of the mobile information terminal in the specified period in each of the plurality of regions is determined as the second value of the variable x _2.

In FIG. 5, for each of the areas A _{1 to} A ₉ , the number of portable information terminals 200 estimated to exist in the designated period, that is, the magnitude of the value of the second variable x ₂ is represented by the magnitude of a circle. . FIG. 5 also shows the second variable x for each of the areas A _{1 to} A ₉ , which is the number of emergency information in the specified period or the number of portable information terminals that are the transmission source, that is, the value of the first variable x _{1. The} ratio to the value of ₂ is represented by the size of the central angle of the hatched sector inside the circle.

In the situation shown in FIG. 5, when the regions A _{1 to} A ₉ are rearranged in descending order of the second variable x ₂ , (A ₇ , A ₆ , A ₄ , A ₃ , A ₁ , A ₈ , A ₉ , A ₅ , A ₂ ). Further, when the areas A _{1 to} A ₉ are rearranged in the descending order of the first variable x ₁ (A ₄ , A ₆ , A ₃ , A ₉ , A ₈ , A ₂ , A ₇ , A ₁ , A ₅ ). As a result.

Subsequently, the second information processing element 122 executes “second information processing” for evaluating the priority of each region (FIG. 2 / STEP03). Specifically, the priority is evaluated according to the multivariable function p (x ₁ , x ₂ ) based on the value of the first variable x _{1 and} the value of the second variable x ₂ obtained by the first information processing element 121. Is done. The multivariable function p (x ₁ , x ₂ ) is a continuous or stepwise decreasing function for each of the first variable x ₁ and the second variable x ₂ , and the following relational expressions (01) and (02) Satisfy the conditions expressed by each. The priority as the evaluation result is stored in the database 110 in association with the specified period and region.

(∂p / ∂x ₁ ) <0 or {p (x ₁ + Δx ₁ , x ₂ ) −p (x ₁ , x ₂ )} / Δx ₁ <0 .. (01).

(∂p / ∂x ₂ ) <0 or {p (x ₁ , x ₂ + Δx ₂ ) −p (x ₁ , x ₂ )} / Δx ₂ <0 .. (02).

For example, the function p (x ₁ , x ₂ ) is defined by the relational expression (11) or (12).

p (x ₁ , x ₂ ) = − α ₁ x ₁ ² exp (−α ₂ x ₂ ) (0 <α ₁ , 0 <α ₂ ) .. (11).

p (x ₁ , x ₂ ) = exp (−α ₁ x ₁ ) + exp (−α ₂ x ₂ ) (0 <α ₁ , 0 <α ₂ ) .. (12).

In the situation shown in FIG. 5, if the areas A _{1 to} A ₉ are rearranged in descending order of priority, for example, (A ₅ , A ₂ , A ₁ , A ₈ , A ₇ , A ₉ , A ₃ , A ₆ , A ₄ ) results.

  Then, the “second communication process” is executed by the second communication element 112 (FIG. 2 / STEP 04). More specifically, the higher the priority that is evaluated for the period including the time point when the emergency information request signal is transmitted from the portable information terminal 200 or the period immediately before the signal is associated with the area. Emergency information is preferentially provided to the portable information terminal 200 identified by the terminal identifier (see FIG. 3).

  For example, the emergency information request signal is transmitted from the portable information terminal 200 to the information processing system 100 via the network together with the terminal identifier. Accordingly, by referring to the database 110 by the second communication element 112, the region associated with the terminal identifier and the period to which the terminal identifier transmission / reception time belongs or the straight line period and the priority thereof are determined. Be recognized.

  Then, the plurality of portable information terminals 200 are ranked according to priority. Then, emergency information is immediately transmitted to the mobile information terminal 200 having a higher rank in the period or a past period to some extent than the period, while the transmission of emergency information is suspended for the mobile information terminal 200 having a lower rank. Is done.

Thus, in the situation shown in FIG. 5, when there is an emergency information request signal from the portable information terminal 200 estimated to exist in each of the areas A _{1 to} A ₉ , the fifth area A ₅ Emergency information is provided with the highest priority to the associated portable information terminal 200. On the other hand, provision of emergency information is most delayed for the portable information terminal 200 associated with the fourth area A ₄ , and emergency information is not provided for the portable information terminal 200 depending on the situation. .

(Operational effect of the information processing system of the present invention)
According to the information processing system of the present invention, a region to which the portable information terminal 200 belongs is estimated from a plurality of regions based on a designated period, which is a period to which emergency information is transmitted or recognized, and a terminal identifier. Yes (see FIG. 2 / STEP02, FIG. 5). For this reason, the portable information terminal 200 that is the source of emergency information may not have the position measurement function, and the position information (latitude and longitude information) can be omitted from the information to be communicated. The number of packets is suppressed, and the information processing load of the system required for information communication can be reduced.

Further, based on the number of the mobile information terminal is a source of information in the designated period (first value of the variable x _1), the number (the value of the second variable x ₂₎ of the portable information terminal belonging to each area, the first The priority of each region is evaluated according to the multivariable function p that is a decreasing function for each of the variable x ₁ and the second variable x ₂ (see relational expressions (01), (02), (11), and (12)).

For this reason, the smaller the value of the first variable x ₁ is, the higher the priority is evaluated, and the emergency information is preferentially provided to the mobile information terminal 200 belonging to the area. For example, the owner of the portable information terminal 200 associated with each of the first area A ₁ , the second area A ₂ and the fifth area A ₅ shown in FIG. Information can be acquired. This is likely because it is difficult to exchange information spontaneously in areas where the number of emergency information sources is small, such as the fact that an emergency has not occurred. Because it is expensive.

Further, the priority is evaluated lower as the area of the second variable x ₂ is larger, and the provision of emergency information to the mobile information terminal 200 belonging to the area is postponed. For example, the seventh area A ₇ shown in FIG. 5 has a smaller number of information transmission sources (the value of the first variable x ₁ ) than the eighth area A ₈ , but the number of mobile information terminals 200 ( since the second variable x value of ₂₎ is large, more of the seventh region a ₇ priority than the eight regions a ₈ is undervalued. This is because, while the number of emergency information sources is small, there is a high probability that a certain amount of spontaneous information exchange is promoted in an area where there are many people.

  As a result, in view of the degree of expectation for voluntary information sharing, it is possible to avoid a situation in which the priority of each region is inappropriately evaluated, or the difference in priority between regions is inappropriately excessive or excessive. sell. Also, in an area where there are many people who have been the source of emergency information, the people who are there will be the source of such information depending on the situation where it is difficult to obtain emergency information through the portable information terminal 200. As a result, voluntary information exchange is expected. Therefore, even when information communication resources are partially damaged due to an emergency, people can share emergency information while effectively utilizing the remaining limited information communication resources.

(Other embodiments of the present invention)
As another embodiment of the present invention, the database 110 may be configured to further store the degree of difficulty that a person moves between a plurality of regions as the value of the third variable x ₃ . Further, the second information processing element 122, on the basis of the value of the third variable x _3, so that the deviation of the priorities of the two regions in accordance with a third increasing function of the variable x ₃ is determined, for each of the two regions It may be configured to evaluate priority.

According to the information processing system having the configuration, the lower the difficulty level of movement of people between any two regions (the value of the third variable x ₃ ) is, the closer the priorities of the two regions are to each other. Be evaluated. For example, as the moving difficulty between the second area A ₂ and the third region A ₃ shown in FIG. 5 is low, the second priority of the region A ₂ is reduced correction, the priority of the third region A ₃ Is corrected to increase or the priority of the second area A ₂ is corrected to decrease while the priority of the third area A ₃ is corrected to increase. In accordance with this, the ranking of each region according to the level of priority can also change.

  For this reason, the situation where the priority which provides emergency information with respect to the portable information terminal 200 which belongs to the said 2 area diverges is avoided. This is because in areas where people can easily come and go with other areas, there is a high probability that voluntary information exchange accompanying people's traffic will be promoted.

  As a result, in view of the degree of expectation for voluntary information sharing, it is possible to avoid a situation in which the priority of each region is inappropriately evaluated, or the difference in priority between regions is inappropriately excessive or excessive. sell. As a result, even if information communication resources are partially damaged due to an emergency, people can share emergency information while effectively utilizing the remaining limited information communication resources.

In the information processing system of the other embodiment, the first information processing element 121 is configured to correct the value of the third variable x ₃ stored in the database 110 based on the contents of emergency information. Also good.

According to the information processing system configured as described above, the value of the third variable x ₃ can be fluidly changed in response to a situation in which the degree of difficulty of traffic between regions varies due to an emergency. For example, the emergency information is an event that hinders the movement between the two areas, such as a stop of the transportation means that connects the second area A ₂ and the third area A ₃ shown in FIG. Represents that the value of the third variable x ₃ is increased and corrected based on the original value. The occurrence of an event that hinders movement between regions may be recognized by a code representing different contents of emergency information.

  Thereby, in view of the degree of expectation for voluntary information sharing, a situation in which the priority of each region is inappropriately evaluated can be avoided. As a result, even if information communication resources are partially damaged due to an emergency, people can share emergency information while effectively utilizing the remaining limited information communication resources.

Priority of each region, based on the first value of the variable x _1, may be evaluated in accordance with a decreasing function of only the first variable x ₁ to the variable.

DESCRIPTION OF SYMBOLS 100 ... Information processing system, 110 ... Database, 111 ... 1st communication element, 112 ... 2nd communication element, 121 ... 1st information processing element, 122 ... 2nd information processing element, 200 ... Portable information terminal.

Claims (4)

A system that collects emergency information about an emergency from people and executes information processing to share the collected information with people,
A database configured to store a terminal identifier for identifying each of a plurality of portable information terminals, each of a plurality of regions, and each of a plurality of periods;
A first communication element configured to recognize the emergency information and the terminal identifier of the portable information terminal by communicating with at least some of the plurality of portable information terminals;
Refer to the database based on the terminal identifier recognized by the first communication element and the point in time when the emergency information is transmitted from the portable information terminal or recognized together with the terminal identifier by the first communication element By doing so, the region associated with the terminal identifier and the designated period to which the time point belongs is estimated as the region to which the portable information terminal that is the source of emergency information belongs. Then, for each of the plurality of regions, the first information processing element configured to obtain the number of the emergency information in the designated period or the number of the portable information terminals that are the source of the emergency information,
Based on the value of the first variable obtained by the first information processing element, the priority is evaluated according to a decreasing function using the first variable as a variable, and the evaluation result is stored in the database. A second information processing element,
Refers to the database according to the emergency information request signal transmitted from at least some of the plurality of portable information terminals, or immediately before the time when the request signal is transmitted / received The higher the priority evaluated by the second information processing element for the period of time, the higher priority is given to the emergency information for the portable information terminal identified by the terminal identifier associated with the area And a second communication element configured to provide the information processing system. The information processing system according to claim 1,
The first information processing element estimates each region to which each of the plurality of portable information terminals in the specified period belongs for each of the plurality of regions by referring to the database, and then each of the plurality of regions. The number of the portable information terminals in the specified period in is determined as a value of a second variable,
The second information processing element is a multivariable function having the second variable as a variable in addition to the first variable, based on the value of the second variable obtained by the first information processing element, An information processing system configured to evaluate the priority according to a decreasing function of a second variable and store the evaluation result in the database. The information processing system according to claim 2,
The database is configured to further store the difficulty of moving a person between any two of the plurality of regions as a value of a third variable;
The priority of each of the two regions is determined such that the second information processing element determines a deviation of the priority of the two regions according to an increasing function of the third variable based on the value of the third variable. An information processing system configured to evaluate a degree. The information processing system according to claim 3.
The information processing system, wherein the first information processing element is configured to correct a value of the third variable stored in the database based on the content of the emergency information.

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