JP6355554B2 - Setting data storage device, method and program - Google Patents

Description

  The present invention relates to a setting data storage device, method, and program.

  In recent years, in order to provide more useful services, efforts to utilize big data have been actively carried out. In particular, when using personal data related to an individual, it is necessary to consider the privacy of the individual. For example, according to the OECD (Organization for Economic Co-operation and Development) guidelines, the purpose of use of the collected personal data should be made clear to the collected person, and the collected personal data Personal data must not be used for purposes other than those for which consent has been obtained from a non-collector.

  Regarding such personal data, Non-Patent Document 1 describes P3P (Platform for Privacy Preferences), which is a standard relating to a mechanism for controlling personal data provided to a Web service. Non-Patent Document 2 proposes an agent system that issues a warning when a user attempts to use a service that violates the preference by setting the preference according to P3P.

  Patent Document 1 discloses a system for controlling whether or not personal data can be provided according to a personal data access policy. The access policy in the disclosed system is realized as a conditional expression for a combination of a resource to be accessed, an application provider, an access use, and the like, and is set in advance.

JP 2014-178727 A

W3C, “The platform for privacy preferences 1.0 (P3P1.0) specialties,” 2002. L. F. Cranor, et. Al. , “Use of a P3P user agent by early adapters”, In Proceedings of the 2002 ACM work on Privacy in the Electronic Society, WPE'02. 1-10, 2002.

In the above technique, a user who wants to control access to personal data needs to set access conditions.
However, it is expected that the number of combinations of personal data items to be used and the purpose of use will be enormous. Setting whether to use such items is a burdensome work for the user, and it is not realistic to set them one by one.

  Therefore, there is a demand for an apparatus that can reduce the input load of setting in setting whether or not personal data can be used.

  An object of the present invention is to provide a setting data storage device, method, and program capable of reducing the load of setting input when setting whether or not personal data can be used.

Specifically, the following solutions are provided.
(1) A setting data storage device for storing settings relating to personal data of a plurality of users, and for each of a plurality of items for setting whether or not to allow provision of elements constituting the personal data, settings for each item A setting file storage unit that stores a setting file that includes values; a selection item that combines a predetermined number of selected items among the items based on the setting file; the setting value; and the selection item is excluded A classifier generator that generates a classifier that learns the set values of the remaining items, an evaluation value calculator that calculates an evaluation value indicating the accuracy of classification of the classifier, and the selection items A combination of a predetermined number of items is determined by comparing the evaluation values, and the setting value of the selection item of a new user not stored in the setting file is input. A guess model generation unit that generates a guess model for guessing the set values of the remaining items that are not input, and obtains the set values of the selection items of the new user, the guess model A setting value inference unit that estimates the setting values of the remaining items.

  The setting data storage device of (1) stores a setting file associated with each item constituting personal data and including a setting value indicating whether or not the item can be used, and is selected from the items. A classifier is generated in which selection items and setting values obtained by combining a predetermined number of items and setting values of the remaining items excluding the selection items are learned based on the setting file. Next, the setting data storage device calculates an evaluation value indicating the accuracy of the classifier, determines a combination of a predetermined number of items constituting the selection item by comparing the evaluation values, and is not stored in the setting file. When a setting value of a selection item of a new user is input, an inference model that estimates the setting values of the remaining items that have not been input is generated. Then, the setting data storage device acquires the setting values of the new user's selection items, and estimates the setting values of the remaining items using the estimation model.

That is, the setting data storage device (1) can accurately set the setting values of the remaining items that have not been input from the setting values of the selection items obtained by combining a predetermined number of items even if all the setting values are not input. Can be guessed.
Therefore, the setting data storage device (1) can reduce the input load by the user by reducing the number of items to be input when setting whether or not personal data can be used.

  (2) The evaluation value calculation unit includes a value classified by the classifier as the setting value of one of the remaining items from the setting value of the selection item, and the one in the setting file. And calculating an evaluation value obtained by summing all the remaining items with respect to a sum of errors with the existing set value of the item, and the inference model generating unit changes the combination constituting the selection item to change the predetermined item The setting data according to (1), wherein the selection item and the classifier corresponding to the evaluation value indicating the highest evaluation among the evaluation values calculated for all combinations of the number of items are determined. Storage device.

That is, the setting data storage device (2) evaluates an error between the value classified by the generated classifier and the existing setting value, and determines the selection item and the classifier having the highest evaluation.
Accordingly, the setting data storage device (2) can determine an appropriate selection item in setting whether or not personal data can be used.

  (3) It further includes a question set creation unit that creates a question set including the selection items of the guess model in order to guess the setting value of the user, and the setting value guessing unit performs the selection by the question set. The setting data storage device according to (1) or (2), wherein the setting value of an item is acquired.

That is, the setting data storage device of (3) creates a question set based on the selection item and acquires the setting value of the selection item.
Therefore, the setting data storage device of (3) can further reduce the input load by the user by using a question set that can be easily input by the user when setting whether or not personal data can be used. .

  (4) A method executed by the setting data storage device according to (1), wherein the classifier generation unit combines a predetermined number of selected items among the items based on the setting file. A classifier generating step for generating a classifier that learns the selected items and the set values and the set values of the remaining items excluding the selected items, and the evaluation value calculating unit An evaluation value calculation step for calculating an evaluation value indicating accuracy, and the estimation model generation unit determines a combination of the predetermined number of items constituting the selection item by comparing the evaluation values, and stores the combination in the setting file. When the setting value of the selection item of a new user that is not stored is input, an estimation model generation step for generating an estimation model for estimating the setting value of the remaining item that has not been input. And a set value inference step in which the set value estimation unit obtains the set values of the selection items of the new user and estimates the set values of the remaining items using the estimation model. A method comprising:

  As in (1), the method (4) can reduce the input load by the user in setting whether or not personal data can be used.

  (5) A program for causing a computer to execute each step of the method described in (4).

  The program of (5) can be made to function on the computer so as to reduce the input load by the user in setting whether or not personal data can be used.

  According to the present invention, it is possible to reduce the load of setting input when setting whether or not personal data can be used.

It is a block diagram which shows the structure of the setting data storage device which concerns on one Embodiment of this invention. It is a figure which shows the example of the setting file of the setting data storage device which concerns on one Embodiment of this invention. It is a figure for demonstrating the production | generation of the evaluation model by the setting data storage device which concerns on one Embodiment of this invention. It is a flowchart which shows the example of the estimation model production | generation process of the setting data storage device which concerns on one Embodiment of this invention. It is a flowchart which shows the example of the setting value estimation process of the setting data storage device which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a setting data storage device 10 according to an embodiment of the present invention.
The setting data storage device 10 includes a setting file storage unit 31 that stores a setting file 311, a classifier generation unit 11, an evaluation value calculation unit 12, a guess model generation unit 13, a question set creation unit 14, and a setting value An estimation unit 15.
The setting data storage device 10 is a server that is communicably connected to the user terminal 50, and each unit will be described in detail.

  The setting file storage unit 31 stores a setting file 311 including setting values for each item for a plurality of items for setting whether or not to allow provision of elements constituting personal data. Specifically, the setting file 311 associates user identification information with item setting values (see FIG. 2 described later). The setting value of the item is, for example, “Y” (numerical value 1) when indicating that the element of personal data can be used, and “N” (numerical value 0) when indicating that the element cannot be used. is there.

Based on the setting file 311, the classifier generation unit 11 selects a selected item obtained by combining a predetermined number of selected items among the items, setting values of the selected items, and setting values of the remaining items excluding the selected items. Generate a classifier that learns. Specifically, a predetermined number (for example, n) of items are selected from the items of the setting file 311, and the classifier generation unit 11 selects the setting value of the selected item that is the selected item, and the selected item. The classifier learns the set values of the remaining items excluding, and generates a classifier for each remaining item.
The classifier may be, for example, a support vector machine. Further, the classifier may be an n-value classifier that expresses the degree of concern in 10 stages, for example. The generated classifiers have different parameters for classifying input values into two classes by learning.
The predetermined number may be selected by a user or an administrator as a number that does not cause an input load by the user when the set value is input.

  The evaluation value calculation unit 12 calculates an evaluation value indicating the accuracy of the classifier. Specifically, the evaluation value calculation unit 12 is a value classified by the classifier from the existing setting value of the selection item of the setting file 311, and is one of the remaining items excluding the selection item. An evaluation value is calculated by summing the sum of errors between the value classified by the classifier as the setting value and the existing setting value of one item in the setting file 311 for all the remaining items.

  The speculation model generation unit 13 determines a combination of a predetermined number of items constituting the selection item by comparing the evaluation values, and a setting value of a new user selection item that is not stored in the setting file 311 is input. In this case, a guess model for guessing the set values of the remaining items that have not been input is generated. Specifically, the speculation model generation unit 13 changes the combination constituting the selection item, and indicates an evaluation value indicating that the evaluation is the highest among the evaluation values calculated for all combinations including a predetermined number of items. The selection item and classifier corresponding to (that is, the minimum value of error) are determined.

  The question set creation unit 14 creates a question set including selection items of a guess model in order to guess the setting value of the user. Specifically, the question set creation unit 14 selects items of the guess model generated by the guess model generation unit (for example, “provide current location information to the navigation service”, “provide purchase information”, etc.). Based on the item), "Can you provide current location information to the navigation service?", "Purchase information" to prompt user input to get the set value "?" The question set creation unit 14 creates a predetermined number (for example, n) questions based on a predetermined number of selection items (for example, n selection items).

  The setting value estimation unit 15 acquires a setting value of a new user's selection item, and estimates the setting values of the remaining items excluding the selection item using an estimation model. The set value estimation unit 15 acquires a set value of a new user selection item using the question set created by the question set creation unit 14. Specifically, the setting value estimation unit 15 transmits the created question set to the user's terminal 50, and receives the setting value input by the user for the transmitted question from the user's terminal 50. A setting value of a new user selection item is acquired. Next, the setting value estimation unit 15 estimates the setting values of the remaining items excluding the selection items using the estimation model based on the received setting values of the selection items.

With reference to FIGS. 2 and 3, the method for generating the above-described estimation model will be further described.
FIG. 2 is a diagram showing an example of the setting file 311 of the setting data storage device 10 according to an embodiment of the present invention. FIG. 3 is a diagram for explaining generation of an evaluation model by the setting data storage device 10 according to an embodiment of the present invention.
As illustrated in FIG. 2, the setting file 311 associates a user ID with a setting value (Y or N) corresponding to an item. Items of the setting file 311, item 1, item 2,..., And item k, the set value corresponding to the item _{Q 1, Q 2, ···,} and _{Q k.} The predetermined number that is the number of selection items is n. For example, the setting value of one combination of the selection items is represented as the setting value Q _{a1 to} Q _an of the selection item, and the setting values of the remaining items excluding the selection item are the setting values R _{a1 of the} remaining items. ~ R _ar (r = k−n).

The classifier generation unit 11 sets the n-dimensional data of the set values Q _{a1 to} Q _an of one combination among the selected items and the set value of one item of the set values R _{a1 to} R _ar of the remaining items. Let R _a1 learn the classifier. In this way, the classifier a1 that classifies the set value R _a1 of one item from the n-dimensional data of the set values Q _{a1 to} Q _an of one combination is generated. The accuracy of the classifier a1 is the value classified by the classifier a1 from the existing values of the setting values Q _{a1 to} Q _an for each user in the setting file 311 and the existing value of the setting value R _a1 for each user in the setting file 311. It is expressed as an error d _a1 that is the sum of all the users of the error with the value of.

Similarly, the classifier generation unit 11 generates classifiers _a2 to classifier _ar for classifying the setting values R _{a2 to} R _ar of all remaining items. The accuracy of these classifiers is expressed as errors d _{a2 to} d _ar .

Next, the evaluation value calculation unit 12 calculates the sum H _a of the errors d _{a1 to} d _ar of each classifier. This sum is an evaluation value indicating the accuracy with which the set values R _{a1 to} R _ar of the remaining items are estimated by the classifier a ₁ to the classifier ar from the set values Q _{a1 to} Q _an of one combination of the selected items. .

Next, the classifier generation unit 11 and the evaluation value calculation unit 12 generate respective classifiers for each remaining item excluding the selection items for all combinations of n items that can be selected as selection items, Evaluation values H _{a to} H _p are calculated.

Next, the inference model generation unit 13 selects combinations of selection items based on the evaluation values indicating that the classification accuracy by the classifier is the best among the evaluation values H _{a to} H _p (that is, the error is minimum). And a classifier for each remaining item is determined and used as an inference model.

  FIG. 4 is a flowchart showing an example of the estimation model generation process of the setting data storage device 10 according to the embodiment of the present invention. The setting data storage device 10 is configured by hardware included in a computer and its peripheral devices, and software that controls the hardware. The following processing is processing executed by a control unit (for example, CPU) according to predetermined software. The inference model generation process is executed periodically or when requested by the user under the OS that manages the program.

  In step S101, the CPU (guess model generation unit 13) acquires a predetermined number n of selection items. More specifically, the CPU receives a predetermined input from the user's terminal 50 (for example, input using a computer keyboard or selection using a pointing device such as a mouse from a selection screen for selecting a predetermined number n). The number n is acquired. Note that the predetermined number n may be input to the server by an administrator, may be a fixed value, or may be calculated from a certain ratio of the number of items.

  In step S102, the CPU (guess model generation unit 13) selects one combination consisting of a predetermined number n as a selection item.

  In step S103, the CPU (classifier generation unit 11) sets the set value of the selected item and the set value of one of the remaining items excluding the selected item to the classifier based on the setting file 311. Let them learn. More specifically, the CPU stores the setting value of the selection item and the setting value of one of the remaining items stored for each user ID from the setting file 311 for all user IDs. Let the classifier learn.

  In step S <b> 104, the CPU (evaluation value calculation unit 12) calculates an error between the value classified by the classifier learned in step S <b> 103 and the existing setting value in the setting file 311. More specifically, the CPU inputs the existing setting value of the selected item to the classifier trained for one item, and calculates an error between the output classification result and the existing setting value of the one item. , It is obtained for all user IDs, and the sum of the obtained errors is calculated as an error of one item.

  In step S105, the CPU (guess model generation unit 13) determines whether or not all of the remaining items have been learned. If this determination is YES, the CPU moves the process to step S106, and if this determination is NO, the CPU moves the process to step S103.

  In step S106, the CPU (evaluation value calculation unit 12) calculates an evaluation value. More specifically, the CPU calculates the sum of errors for each item obtained in step S104 as an evaluation value for one combination of selection items.

  In step S <b> 107, the CPU (guess model generation unit 13) determines whether or not all combinations of selection items are complete. If this determination is YES, the CPU moves the process to step S108, and if this determination is NO, the CPU moves the process to step S102.

  In step S108, the CPU (guess model generation unit 13) determines a selection item. More specifically, the CPU corresponds to an evaluation value indicating that the classification accuracy by the classifier is the best (that is, the error is minimum) among the evaluation values calculated in step S106 for each combination of selection items. The selection item combination and the classifier are determined as the selection item and the classifier of the inference model for estimating the set value. Thereafter, the CPU ends the estimation model generation process.

  FIG. 5 is a flowchart showing an example of setting value estimation processing of the setting data storage device 10 according to the embodiment of the present invention. The question process is executed, for example, when requested by the user under the OS that manages the program.

  In step S <b> 201, the CPU (question set creation unit 14) creates a question set based on the selection item of the speculation model. More specifically, the CPU creates a question set for prompting the user's input in order to obtain setting values for the selection items of the speculative model. Questions are created by the number of items (for example, n items) constituting the selection item.

  In step S202, the CPU (setting value estimation unit 15) acquires a setting value for the question set created in step S201. Specifically, the CPU transmits the question set to the user terminal 50 and receives the user identification information from the user terminal 50 together with the set value input by the user.

  In step S203, the CPU (setting value estimation unit 15) estimates the setting values of the remaining items excluding the selection item from the selection items and the setting values acquired in step S202 using an estimation model. More specifically, the CPU inputs the setting value (n-dimensional data) of the selection item to the estimation model and acquires the output from the estimation model, thereby estimating the setting value for each remaining item.

  In step S <b> 204, the CPU (setting value estimation unit 15) stores the estimated setting value in the setting file 311. More specifically, the CPU correlates the setting file 311 stored in the setting file storage unit 31 with the user identification information acquired in step S202, the setting value of the selection item acquired in step S202, The setting values of the remaining items estimated in step S203 are stored. Thereafter, the CPU ends the set value estimation process.

According to the present embodiment, the setting data storage device 10 determines a combination of a predetermined number of items constituting the selection item by comparing the evaluation values, and selects new user selection items that are not stored in the setting file. When a set value is input, an inference model is generated that estimates the set values of the remaining items that have not been input. In the generation of the estimation model, the setting data storage device 10 evaluates an error between the value classified by the classifier generated for each remaining item excluding the selected item and the existing setting value, and has the highest evaluation. Determine selection items and classifiers. Then, the setting data storage device 10 uses the estimation model to set the setting values of the remaining items that have not been input from the setting values of the selection items obtained by combining a predetermined number of items even if all of the setting values are not input. Is accurately estimated.
Further, the setting data storage device 10 creates a question set including selection items of the estimation model in order to estimate the setting value of the user, acquires a setting value of the new selection item of the user by the question set, and estimates Estimate the settings of the remaining items using the model.
As described above, the setting data storage device 10 predicts detailed privacy settings with high accuracy and automatically sets them with a small number of questions, thereby reducing the input load by the user.

As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above.
For example, in the above-described embodiment, the setting data storage device 10 sets the setting values in which the remaining items are not input in response to the input of the setting values of the selection items by a new user. In response to the user's selection item input in 311, the setting values already input in the remaining items may be reset. The setting data storage device 10 can change the setting values of the remaining items as the existing setting values of the selection items are changed.
In the above-described embodiment, the setting data storage device 10 learns the classifier every time the speculation model is generated. However, only the classifier that needs to be learned by updating the setting file 311 may be learned. . The setting data storage device 10 can efficiently update the estimation model.

  The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

  A series of processing by the setting data storage device 10 can also be performed by software. When a series of processing is performed by software, a program constituting the software is installed in a general-purpose computer or the like. The program may be recorded on a computer-readable recording medium (for example, a removable medium such as a CD-ROM) and distributed to the user, or may be downloaded to the user's computer via a network. May be distributed.

DESCRIPTION OF SYMBOLS 10 Setting data memory | storage device 11 Classifier production | generation part 12 Evaluation value calculation part 13 Guess model generation part 14 Question set creation part 15 Setting value estimation part 31 Setting file memory | storage part 311 Setting file 50 User's terminal

Claims (4)

A setting data storage device that stores settings related to personal data of a plurality of users,
A setting file storage unit that stores a setting file that includes setting values for each of the items associated with the user, for a plurality of items that are set to allow or not to provide an element that constitutes the personal data;
Based on the setting file, an item that can be selected as a selection item that is a combination of a predetermined number of items among the items, an existing setting value of the item, and the remaining items other than the item that can be selected as the selection item A classifier generator that generates a classifier that has learned the existing setting value of the item , wherein the classifier is one of the remaining items excluding the selection item from the setting value of the selection item A classifier generator, which is a classifier for each of the remaining items, for estimating a setting value of an item ;
One of the combinations of items that can be selected as the selection item can be selected as the selection item from the existing setting values of the item that can be selected as the selection item associated with one user stored in the setting file. An error between a value estimated by the classifier as a setting value of one of the remaining items excluding the item and an existing setting value of the one item associated with the one user in the setting file Is calculated for all users stored in the setting file, and the sum of all the errors for all users is calculated for all the remaining items, and for all the remaining items. the sum was calculated, to calculate the evaluation value sum for one of the combinations of items may be selected as the selection item evaluation value And the detection section,
The combination of items corresponding to the evaluation value indicating the highest evaluation among the evaluation values calculated for all combinations of items that can be selected as the selection item is determined as the selection item, and is determined. A speculation model generation unit that determines a classifier for each remaining item corresponding to the combination of selected items ,
A setting value of the determined selection item of a new user that is not stored in the setting file is acquired, and a setting value of the remaining item that is not input by the new user using the determined classifier A setting value estimation unit for estimating
A setting data storage device comprising: In order to infer the setting value of the remaining items of the new user, further comprising a question set creation unit for creating a question set including a combination of the determined selection items,
2. The setting data storage device according to claim 1, wherein the setting value estimation unit acquires a setting value of the determined selection item when the new user inputs a setting value for the question set. A method executed by the setting data storage device according to claim 1,
Based on the setting file, the classifier generation unit selects an item that can be selected as a selection item that is a combination of a predetermined number of items among the items, an existing setting value of the item , and the selection item A classifier generating step of generating a classifier that learns existing setting values of remaining items excluding items that can be performed , wherein the classifier removes the selection items from the setting values of the selection items A classifier generating step, which is a classifier for each of the remaining items, for estimating a setting value of one of the items
From the existing setting value of the item that can be selected as the selection item associated with one user stored in the setting file, for one of the combinations of items that can be selected as the selection item , the evaluation value calculation unit The value estimated by the classifier as the setting value of one of the remaining items excluding the items that can be selected as the selection item and the one item associated with the one user in the setting file An operation for calculating an error with an existing setting value is executed for all users stored in the setting file, and a sum for all users of the error is calculated for all the remaining items, respectively. commentary which the remaining sum calculated respectively for all of the items, and the sum for one of the combinations of items may be selected as the selection item An evaluation value calculation step of calculating a value,
The selection item is a combination of items corresponding to the evaluation value indicating that the estimation model generation unit has the highest evaluation among the evaluation values respectively calculated for all combinations of items that can be selected as the selection item. An inference model generation step for determining a classifier for each remaining item corresponding to the determined combination of selected items, and
The set value estimation unit acquires a set value of the determined selection item of a new user that is not stored in the setting file, and is not input by the new user using the determined classifier A setting value estimation step of estimating the setting values of the remaining items;
A method comprising: The program for making the setting data storage device of Claim 1 perform each step of the method of Claim 3 .

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