JPH10207901A - Information providing method and system - Google Patents

Abstract

(57) [Summary] [Problem] A keyword search process that must be performed when calculating a matching score by assigning a unique number (keyword ID) to a character string of a keyword and treating all keywords by the keyword ID An information providing method and system capable of reducing time are provided. Kind Code: A1 A keyword is assigned to a keyword extracted from text information held in a center-side device, a weight is obtained as a degree of user's interest, and a user profile together with a keyword ID corresponding to the extracted keyword is obtained. , The weight of the keyword ID is stored in the information profile, a matching score is calculated which indicates to what degree the information matches the user's interest, and the information to be provided to the user device according to the matching score is calculated. Select and send.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information providing method and system, and more particularly, to a method for quantitatively determining how much individual information of a center-side device in which information is stored matches the user's interest. The present invention relates to an information providing method and system for calculating information, selecting information based on the result, and providing the information to a user device.

[0002]

2. Description of the Related Art Conventionally, for each piece of information in a center-side apparatus in which information has been stored, the degree of matching with the user's interest is calculated quantitatively, and information is selected based on the result. In the information providing method and apparatus provided to the user side device, an index of a genre to which a keyword or information belongs is registered in advance as an object of the user's interest, and the center side is registered by the registered keyword or index. And retrieves the information accumulated as a result of the search, and provides the information obtained as a result of the search as information that matches the interests of the user.

[0003] However, in the above method, it is difficult to register all keywords for searching for information desired by a user in advance, and it is impossible to provide comprehensive information desired by a user. Remains. Therefore, from the behavior of the user when providing the information (keywords used for searching, information browsing time, etc.), it is estimated how much the user was interested in the information, and according to the degree. There is a method of automatically registering a keyword extracted from the information.

[0004] However, there is a problem that a search cannot be performed by combining some registered keywords such as an AND search or an OR search. On the contrary,
Perform a search by combining registered keywords,
In order to provide information, a keyword and the weight of a keyword are retained as a degree of interest in an object that the user is interested in, a keyword is extracted from the information, and a keyword and a keyword are determined as importance of the keyword with respect to the information. There is a method of holding a weight and calculating the weight of these keywords to calculate a matching score that indicates numerically how much the information matches the user's interest.

In the conventional method, when a keyword is registered as an object of interest of a user, the keyword is stored as character string data.

[0006]

However, in the conventional information providing method described above, it is necessary to perform a process of searching for a keyword extracted from all information using all registered keywords. There is a problem that it costs. For example, if 100 keywords and their weights are retained as objects of interest to the user and 20 keywords are extracted on average for each of the 10,000 pieces of stored information, To search for a match with the information, it is necessary to repeat the search 20 million times. However, in the conventional method of treating keywords as character string data, the size of the data differs for each keyword. There is a problem that processing cannot be performed in a timely manner and processing takes time.

The present invention has been made in view of the above points, and has been made in consideration of the above circumstances.
D), and an information providing method and system capable of reducing the processing time of a keyword search that must be performed when calculating a matching score by treating all keywords by a keyword ID. I do.

[0008]

FIG. 1 is a diagram for explaining the principle of the present invention. The present invention quantitatively calculates, for each piece of information in the center-side device in which the information is stored, the extent to which the information matches the user's interest, selects information based on the result, and selects the user. In the information providing method provided to the side device, a unique number (hereinafter, referred to as a keyword ID) is assigned to a character string of a keyword extracted from the text information held in the center device (step 1), and A keyword is extracted (step 2), and an object of interest to the user and the weight of the keyword, which is the degree of interest in the object, are stored in a user profile together with a keyword ID corresponding to the extracted keyword (step 3). ), The weight of the keyword corresponding to the keyword ID is held in the information profile (step 4), and the user profile and the information profile are stored. Using a file, a matching score is calculated that indicates to what degree the information matches the user's interest (step 5), and information to be provided to the user device is selected according to the matching score (step 6). Then, the selected information is transmitted to the user device (step 7).

Further, according to the present invention, for each piece of information in the center-side device in which the information is stored, the degree of matching with the user's interest is calculated quantitatively, and the information is selected based on the result. Then, in the method of providing information to the user-side device, a unique number (hereinafter, referred to as a keyword ID) is assigned to the character string of the keyword of the text information held in the center-side device, and the center-side device holds the character string. A keyword is extracted from the text information to be extracted, and is stored in a user profile together with an object of interest to the user and a keyword weight indicating the degree of interest in the object, and a keyword ID corresponding to the extracted keyword. The number of appearances of the keyword in each piece of text information stored in the side device is counted, and the information is displayed together with the keyword ID corresponding to the keyword. It is stored in the profile, the appearance frequency indicating the appearance ratio of the keyword in all the text information accumulated in the center side device or the text information which is sufficient in quantity is obtained and stored together with the keyword ID. From the number of occurrences and the frequency of occurrence of keywords,
The weight of the keyword is calculated, a matching score is calculated based on the content of the user profile and the weight of the extracted keyword, and information to be provided to the user device is selected according to the matching score. Send to the user device.

According to the present invention, a keyword ID is assigned to a character string of a keyword in the information, and the keyword ID is stored in the first table. Further, according to the present invention, when providing the selected information to the user device, the information to be provided to the user is edited into information that can be displayed on the user device according to the matching score.

Further, according to the present invention, after the selected information is provided to the user side device, the history of the operation performed by the user in the user side device is stored, and provided using the operation history. The degree of suitability of the information to the user's interest is calculated and stored as a degree of relevance, and the keyword ID is added to or deleted from the user profile with reference to the degree of relevance of each piece of information, or The weight of the keyword in the user profile is updated.

FIG. 2 is a diagram showing the principle of the present invention. The present invention quantitatively calculates, for each piece of information in which information is stored, how much the user's interests are matched, selects information based on the result, and provides the information to the user-side device. An information providing system comprising a center-side device 10 and a user-side device 20 for acquiring the information from the center-side device 10, wherein the center-side device 10 stores information to be provided to a user. Means 11 and information storage means 1
1 to extract a keyword and assign a weight to the extracted keyword, and a keyword ID corresponding to the keyword
And an information profile generating means 12 for registering the information in the information profile 14 and a keyword I corresponding to the keyword as a degree of interest in the information corresponding to the keyword for each user.
User information holding means 15 for holding the weight together with D, and to what extent the information corresponding to the extracted keyword matches the interest of the user based on the contents of the information profile 14 and the user information holding means 15 A matching score calculating means 16 for calculating a matching score which is a degree of information matching, and an information selecting means 17 for selecting information to be transmitted to the user-side device according to the matching score calculated by the matching score calculating means 16.
And a transmitting unit 40 for transmitting the information selected by the information selecting unit 17 to the user-side device 20.

Further, the present invention further includes a keyword ID table 13 for assigning and holding a keyword ID uniquely corresponding to a character string of the keyword. Means for acquiring a keyword ID corresponding to the keyword is included.

The user-side device 20 includes an operation-history holding unit 23 for holding history information for operating information transmitted from the center-side device 10, and a history information held by the operation-history holding unit 23. And a history information transfer means 24 for transferring the data to the center apparatus 10 at a predetermined cycle or an arbitrary cycle. The center apparatus 10 transmits the information to the center apparatus 10 based on the history information acquired from the user apparatus. The suitability calculating means 18 for calculating the suitability indicating the degree of suitability of the transmitted information to the user's interest, and the contents of the user information holding means 15 based on the suitability obtained by the suitability calculating means 18 User information updating means 1 for updating user
9.

The above-mentioned user information updating means 19 stores the keyword ID of the user information holding means 15 based on the degree of conformity.
And means for changing the weight of the keyword ID. Furthermore, the present invention quantitatively calculates, for each piece of information in which information is stored, how much the information matches the user's interest, selects information based on the result, and sends the information to the user side device. An information providing system comprising: a center-side device for providing; and a user-side device for acquiring the information from the center-side device, wherein the center-side device includes information storage means for storing information to be provided to a user. An information profile generation unit that extracts a keyword from the information storage unit, counts the number of appearances of the extracted keyword in each piece of information in the information storage unit, and stores the information together with a keyword ID corresponding to the keyword; User information holding means for holding the weight together with the keyword ID corresponding to the keyword as the degree of interest in the information corresponding to the keyword; A keyword appearance frequency holding unit that holds the appearance frequency of an arbitrary keyword in all the accumulated information or sufficient information together with the keyword ID corresponding to the keyword, and a keyword corresponding to the extracted keyword corresponding to the keyword. Weights are calculated using the number of appearances and the frequency of appearance in the information to be extracted, and based on the weights and the contents of the user information holding means, how much the information corresponding to the extracted keywords matches the interest of the user. A matching score calculating means for calculating a matching score which is a degree of information, an information selecting means for selecting information to be transmitted to the user side device according to the matching score calculated by the matching score calculating means, and a selecting means for selecting by the information selecting means Transmission means for transmitting the received information to the user device.

As described above, according to the present invention, a keyword ID is assigned to a keyword while using an arbitrary keyword extraction method and an arbitrary keyword weighting method for text information, and a keyword in a user profile is assigned. By treating all keywords of the stored information as keyword IDs, when calculating the matching score, all the information stored from the keywords in the user profile is searched, and the weight of the keyword is determined by the information. It is possible to reduce the time required for the processing to be referred to.

Further, according to the present invention, a keyword is assigned to a keyword I while using a method of assigning a keyword weight to the text information using the appearance frequency of the keyword.
D, and all keywords of information for providing a user profile are handled as keyword IDs, so that when calculating a matching score, all information accumulated from the keyword IDs in the user profile is used. It is possible to reduce the time required for searching and processing for referring to the weight of the keyword with the information.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the configuration of a first center-side device will be described. FIG. 3 is a configuration diagram (part 1) of the center-side device of the present invention. Center-side device 10 shown in FIG.
Is the information storage unit 11, the information analysis unit 12, the keyword ID
Table 13, information profile 14, user profile 15, matching score calculation unit 16, provided information creation unit 1
7, fitness calculating section 18, user profile correcting section 19
Consists of

The information storage unit 11 stores individual text information to be provided to the user. The information analysis unit 12
A keyword is extracted by referring to the number of appearances of the keyword, the appearance position, the number of characters, and the like, and the weight of the keyword is calculated. It should be noted that a method for calculating the keyword weight uses a known method, and the present invention does not define the method.

The keyword ID table 13 stores a keyword and a keyword ID uniquely assigned to the keyword.
Is stored. FIG. 4 is an example of the data structure of the keyword ID table of the present invention. Keyword ID shown in FIG.
The table 13 stores a keyword ID 131 and character string data 132 of an actual keyword.

The information profile 14 is stored in the information storage 11
The keyword extracted by the information analysis unit 12 is converted into a keyword ID with reference to the keyword ID table 13 for each piece of information stored in the storage unit, and is stored together with the weight of the keyword. FIG. 5 is an example of the data structure of the information profile of the present invention.

The information profile 14 shown in FIG. 2 includes a keyword ID 141 and a keyword weight 142 corresponding to the keyword ID. The user profile 15 holds a keyword ID and its weight as a target that the user is interested in and a degree of interest in the target.

FIG. 6 shows an example of the data structure of the user profile of the present invention. User profile 1 shown in FIG.
5 is a keyword ID 151 and a keyword weight 15
2 In this example, a fixed-length hexadecimal value is used for the keyword ID 151 in order to unify the data size and increase the search speed.

The matching score calculator 16 calculates a matching score, which is a numerical value indicating how much the information on the extracted keyword matches the user's interest, from the information profile 14 and the user profile 15. The detailed calculation method of the matching score will be described later.

The provided information creating unit 17 selects information to be provided to the user according to the matching score, and processes and edits the selected information to be displayed on the user side device. The fitness calculating unit 18 calculates the fitness of each piece of provided information according to the information in the usage history table transmitted from the user. A detailed calculation method of the degree of matching will be described later.

The user profile correction section 19 corrects the contents of the user profile 15 based on the degree of suitability for each piece of information obtained by the degree of fit calculation section 18. Next, the configuration of the user device will be described. FIG.
1 is a configuration diagram of a user-side device of the present invention.

The user-side device 20 shown in FIG. 1 includes an information display unit 21, an operation unit 22, and a history information holding unit 23. The information display unit 21 displays information sent from the center device 10. The operation unit 22 accepts operations such as saving, canceling, and scrolling the screen of the user with respect to the displayed information.

The history information holding unit 22 includes the center-side device 10
Observe the user's operations such as browsing time of the information provided from, storage, discarding of information, scrolling of the screen, etc., and save their operation histories as a table (usage history table). In the usage history table, for example, provided information and a browse time for the information are set.

Next, the operation of the center device 10 will be described. FIG. 8 is a flowchart showing an outline of a series of operations of the present invention. Step 100) First, in the center-side device 10, the information analysis unit 12 extracts a keyword from the information stored in the information storage unit 11 by referring to the number of appearances, the appearance position, the number of characters, and the like of the keyword. The corresponding keyword ID is obtained from the keyword ID table 13, and the information profile 1 is displayed together with the weight of the keyword.
Set to 4.

Step 110) Matching score calculation section 16
Obtains a keyword ID set for each user and a weight related to the keyword corresponding to the keyword ID from the user profile 15, and further matches the information corresponding to the extracted keyword from the information of the information profile 14. Calculate the score.

Step 120) Provided information creation unit 17
Selects information to be transmitted to the user device 20 according to the matching score, edits the information into information that can be displayed on the user device 20, and transmits the edited information to the user device 20. Step 130) The user-side device 20 displays the information acquired from the center-side device 10, performs an operation on the display information, and sets the operation status in the operation history table. The information of the operation history table is transferred to the center device 10 at a predetermined cycle or at an arbitrary timing.

Step 140) Upon receiving the information of the operation history table, the center-side device 10 calculates the degree of conformity based on the information, and the user profile correcting unit 19 converts the user profile 15 based on the degree of conformity. Update. Next, the process of creating the information profile 14 in step 100 will be described.

FIG. 9 is a flowchart of an information profile creation process in the first center-side device of the present invention. Step 101) Input of text information to be provided to the user side device 20 is received from an input unit (not shown) connected to the center side device 10 and stored in the information storage unit 11.

Step 102) The information analysis unit 12 performs a keyword extraction process and a keyword weight calculation process from the text information input and stored in the information storage unit 11 by a known method. Step 103) It is determined whether or not the keyword extracted in the keyword ID table 13 is registered. If the keyword is registered, the process proceeds to step 105, and if not, the process proceeds to step 104.

Step 104) A keyword ID not used in the keyword ID table 13 is assigned to the extracted keyword, and the keyword ID is registered in the keyword ID table 13 together with the keyword. Step 105) The information analysis unit 12 converts the extracted keyword into a keyword ID by referring to the keyword ID table, and registers the keyword ID and the weight for the keyword obtained in step 102 in the information profile 14 corresponding to the information. .

Next, the process of calculating the matching score of the center apparatus 10 in step 110 will be described.
FIG. 10 is a flowchart of the matching score calculation processing of the present invention. Step 111) The matching score calculation unit 16 acquires, for each user, the contents of the information profile 14 of the information for which the matching score for the user has not been calculated yet.

Step 112) Information profile 14
And the user profile 15 to calculate a matching score. The calculation of the matching score is performed as follows. Consider an N-dimensional vector space in which the keywords (N) registered in the keyword ID table 13 are linearly independent vectors.

The keyword registered in the user profile 15 is considered as a subspace of this vector space, and the weight u _i (i = 1, 2,..., N) of the keyword is considered as the size of each element. The fifteen vectors _Pu are defined as follows. P _u = u ₁ , u ₂ , u ₃ ,..., U _N ) ^T However, the weight for the keyword ID that is not registered is set to 0. T represents transposition.

Similarly, the information profile P _I is defined. However, the weight of the keyword in the information is V _j (j
= 1, 2,..., N). P _I = (v ₁ , v ₂ , v ₃ ,..., V _N ) ^T However, the weight for the keyword ID that is not registered is set to 0.

At this time, the matching score S is defined as follows. S = P _u · P _I where the symbol “·” in the equation represents an inner product operation. Step 113) The provided information creating unit 17 creates information to be provided to the user, such as listing information titles or summary information in the order of the matching score and assigning a matching score.

Step 114) The created information is transmitted to the user device 20. Next, the operation of the user profile correction process in step 140 will be described.
FIG. 11 is a flowchart of a process of modifying a user process file according to the present invention.

Step 141) The center device 10 obtains from the user device 20 the contents of the operation history table describing the time at which the user browsed the information and the like. Step 142) The fitness calculating unit 18 calculates the fitness of each piece of information provided to the user device 20 based on the acquired history information of the operation history table.

Assuming that the degree of conformity is a, for example, the browsing time when the user responds to the provided information that it is acceptable or impossible is set as a = 0 and the reference time, and a> 0: A <0: Spent more time than the reference time spent browsing information a <0: Defined as spending less time than the reference time on browsing information, and determine a as a value empirically obtained by experiment.

Step 143) The user profile correcting section 19 corrects the user profile 15 by using the degree of matching obtained in step 142. Fixed user profile 15, 'When, P _u' user profiles P _u of the corrected computing a = P _u + aP _I.

Next, a description will be given of the center-side device 10 having a function of calculating a matching score using the keyword appearance frequency. FIG. 12 is a configuration diagram (part 2) of the center-side device of the present invention. 3, the same components as those in FIG. 3 are denoted by the same reference numerals.

The center device 10 shown in FIG. 1 includes an information storage unit 11, an information analysis unit 12, a keyword ID table 1
3, information profile 14, user profile 15,
It is composed of a matching score calculating section 16, a provision information creating section 17, a matching degree calculating section 18, a user profile correcting section 19, and a keyword appearance frequency recording section 31.

The information storage unit 11 stores individual text information to be provided to the user. The information analysis unit 12
The keyword is extracted by referring to the number of appearances of the keyword, the appearance position, the number of characters, and the like, and the number of appearances is counted. The keyword ID table 13 stores keywords and keyword IDs uniquely assigned to the keywords.

The keyword appearance frequency recording section 31 holds the appearance frequency indicating the rate of occurrence of keywords in all text information stored in the information storage section 11 of the center-side apparatus 10 or in sufficient text information. FIG.
Is an example of a data structure in which the keyword ID table and the keyword appearance frequency record of the present invention are combined.

The structure shown in FIG.
It is composed of a keyword 33 and all the text information of the information storage unit 11 relating to the keyword 33 or the keyword appearance frequency 34 in the text information with sufficient quantity. The information profile 14 converts the keyword extracted by the information analysis unit 12 for each piece of information stored in the information storage unit 11 into a keyword ID with reference to a keyword ID table 13 and holds the keyword ID together with the weight of the keyword. .

FIG. 14 shows an example of the data structure of the second information profile of the present invention. The information profile 14 shown in FIG.
Is composed of the number of appearances 144 of the keyword corresponding to. In this example, a hexadecimal number is used for the keyword ID.

The user profile 15 holds a keyword ID and its weight as an object that the user is interested in and the degree of interest in the object. The matching score calculation unit 16 calculates a matching score, which is a numerical value indicating how much the information on the extracted keyword matches the interest of the user, from the keyword appearance frequency 144 of the information profile 14 and the keyword appearance frequency recording unit 31. A weight is calculated as the degree of importance for the information, and a matching score is calculated using the user profile 15.

The provided information creating unit 17 selects information to be provided to the user according to the matching score, and processes and edits the selected information to be displayed on the user side device. The fitness calculating unit 18 calculates the fitness of each piece of provided information according to the usage history table transmitted from the user.

The user profile correction unit 19 corrects the user profile 15 based on the degree of suitability for each piece of information obtained by the degree of suitability calculation unit 18. Next, the information profile 1 of step 100 in FIG.
4 will be described.

FIG. 15 is a flowchart of a process of creating an information profile in the second center apparatus according to the present invention. Step 301) An input of text information to be provided to the user from the input unit (not shown) connected to the center apparatus 10 to the information storage unit 11 is received.

Step 302) The information analysis unit 12 extracts a keyword from the input text information, and counts the number of appearances of the keyword. Step 303) The extracted keyword is the keyword I
It is checked whether it is registered in the D table 13. If it is not registered, the process proceeds to step 304, and if it is registered, the process proceeds to step 306.

Step 304) A keyword ID that is not used in the keyword ID table 13 is assigned to the extracted keyword, and is registered in the keyword ID table 13 together with a character string of the keyword. Step 305) The information analysis unit 12 outputs the keyword ID
FIG. 1 shows the keywords additionally registered in the table 13.
The appearance frequency 34 of the keyword in the table shown in FIG.

Step 306) Refer to the keyword ID table 13 for the extracted keyword and enter the keyword ID
And the keyword appearance frequency 34 in the table shown in FIG. 13 is increased by one. Step 307) The keyword ID and the number of appearances of the keyword in the information are determined for each information profile 1.
Register to 4.

The processing of the matching score calculation section 16 is the same as the contents shown in FIG. 10, except that the number of appearances of the keyword in the information is represented by f _j (j = 1, 2,..., N) calculating the weights V _j as follows. V _j = f _j / F _j The correction processing of the user profile 15 is also performed by the same method as the method shown in FIG.

[0059]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] In the center-side device 10, the information analysis unit 12 extracts the keyword "Internet" from the information storage unit 11 by referring to the number of appearances, the appearance position, the number of characters, and the like of the keyword. The keyword ID “01AC08” corresponding to “Internet” is acquired from the keyword ID table 13, and the information profile 14 together with the weight (1.000379) of the keyword is acquired.
Are set as shown in FIG. 5 (step 100).

The matching score calculation unit 16 acquires the keyword ID “01AC08” set for each user and the weight (1.468824) related to the keyword corresponding to the keyword ID from the user profile 14 shown in FIG. Further, a matching score of information corresponding to the extracted keyword "Internet" is calculated from the information of the information profile 14 (step 110).

The provision information creation unit 17 determines the matching score (S)
, Select information to be transmitted to the user-side device 20,
The user device 20 edits the information to be displayable, and transmits the edited information to the user device 20 (step 12).
0). The user device 20 displays information corresponding to the keyword "Internet" acquired from the center device 10, performs an operation on the display information, and sets the operation status in the operation history table. Predetermined period or
The information of the operation history table is transferred to the center apparatus 10 at an arbitrary timing (step 130).

When the center-side device 10 receives the information of the operation history table, the fitness calculating unit 18 calculates the fitness based on the information, and the user profile modifying unit 1
In step 9, the user profile 15 is updated based on the calculated degree of matching. In this example, it is assumed that the browsing time of the user is longer than a predetermined time (a> 0), and the weight of the keyword ID “01AC08” shown in FIG.
9119 ".

[Second Embodiment] The center-side device 10
, The information analysis unit 12 extracts the keyword “digital” from the information storage unit 11 by referring to the number of appearances, the appearance position, and the number of characters of the keyword, and assigns the keyword ID “009001” corresponding to the keyword “digital” to the keyword ID The information is acquired from the table 13 and set in the information profile 14 (step 100).

The matching score calculation unit 16 calculates the number of appearances (16) of the keyword “digital” shown in FIG. 14 and the weight from the keyword appearance frequency recording unit 31 as the importance of the information corresponding to the keyword “digital”. FIG.
Weight of the user profile 15 shown in FIG.
Calculate the matching score (S) using 3) (Step 1)
10).

The provided information creation unit 17 determines the matching score (S)
, Select information to be transmitted to the user-side device 20,
The user device 20 edits the information to be displayable, and transmits the edited information to the user device 20 (step 12).
0). The user device 20 displays information corresponding to the keyword “digital” acquired from the center device 10, performs an operation on the display information, and sets the operation status in the operation history table. The information of the operation history table is transferred to the center device 10 at a predetermined cycle or at an arbitrary timing (step 130).

When the center apparatus 10 receives the information of the operation history table, the adaptability calculating section 18 calculates the adaptability based on the information, and the user profile correcting section 19 calculates the adaptability based on the calculated adaptability. To update the user profile 15. In this example, it is assumed that the browsing time of the user is longer than a predetermined time (a> 0),
The weight of the keyword ID “009001” shown in FIG. 6 is updated to “1.332931” (step 140).

The present invention is not limited to the above-described embodiment, but can be variously modified and applied within the scope of the claims.

[0068]

As described above, according to the information providing method and system of the present invention, a keyword is converted into a keyword ID, and all keywords of information for providing a user profile are handled as keyword IDs. When calculating the matching score, the time required for searching all the information accumulated from the keyword ID in the user profile and referring to the weight of the keyword in the information is reduced, and as a result, Compared with the conventional technology that provides information that matches the user's interest from the stored text information, faster processing is possible, and when the amount of information is large, it can be used for one center. Can handle cases where the number of persons is large.

Further, according to the present invention, by using, as keywords, many words included in information for one piece of information, information that more closely matches the needs of the user and is not leaked to the user. Offers can be made. Furthermore, by using the appearance frequency of the keyword included in all the information accumulated in the center-side device or the quantitatively sufficient information, a matching score is obtained from the appearance frequency, so that the appearance frequency is higher. It is possible to provide information corresponding to a keyword (a general keyword) to a user.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the principle of the present invention.

FIG. 2 is a principle configuration diagram of the present invention.

FIG. 3 is a configuration diagram (part 1) of a center-side device according to the present invention.

FIG. 4 is an example of a data structure of a keyword ID table according to the present invention.

FIG. 5 is an example of a data structure of an information profile of the present invention.

FIG. 6 is an example of a data structure of a user profile according to the present invention.

FIG. 7 is a configuration diagram of a user device of the present invention.

FIG. 8 is a flowchart showing an outline of a series of operations of the present invention.

FIG. 9 is a flowchart of a first information profile creation process in the center device of the present invention.

FIG. 10 is a flowchart of a matching score calculation process of the present invention.

FIG. 11 is a flowchart of a user profile correction process according to the present invention.

FIG. 12 is a configuration diagram (part 2) of the center-side device of the present invention.

FIG. 13 shows a data structure obtained by combining a keyword ID table and a keyword appearance frequency recording unit according to the present invention.

FIG. 14 is a data structure of a second information profile of the present invention.

FIG. 15 is a flowchart of a process of creating a second information profile in the center device of the present invention.

[Explanation of symbols]

Reference Signs List 10 Center-side apparatus 11 Information storage unit, information storage unit 12 Information analysis unit, information profile creation unit 13 Keyword ID table 14 Information profile 15 User profile, user information holding unit 16 Match score calculation unit, match score calculation unit 17 Information creation unit, information selection unit 18 Suitability calculation unit, suitability calculation unit 19 User profile correction unit, user information update unit 20 User side device 21 Information display unit 22 Operation unit 23 History information holding unit, Operation history holding Means 24 History information transfer means 30 Keyword ID table / keyword appearance frequency recording unit 31 Keyword appearance frequency recording unit 32 Keyword ID 33 Keyword 34 Keyword appearance frequency 40 Transmission means 131 Keyword ID 132 Keyword 141 Keyword ID 142 Weight 43 keyword ID 144 occurrence count 151 keyword ID 152 weight

Claims (16)

[Claims] 1. Calculating quantitatively how much individual information in a center-side device in which information is stored matches the user's interest, selecting information based on the result, and using the information. In a method of providing information to a user-side device, a unique number (hereinafter referred to as a keyword ID) is assigned to a character string of a keyword extracted from text information held in the center-side device, and a keyword is determined from the text information. Is stored in a user profile together with the keyword ID as the object of interest and the degree of interest in the object as a degree of interest in the object. The weight is retained in the information profile, and extracted using the user profile and the contents of the information profile. Calculating a matching score numerically indicating how much the information corresponding to the keyword matches the interest of the user; selecting information to be provided to the user-side device according to the calculated matching score; An information providing method, comprising transmitting selected information to the user device. 2. The information providing method according to claim 1, wherein the keyword ID is assigned to a character string of a keyword in the information, and the keyword ID is stored in a first table. 3. The information to be provided to the user according to the matching score is edited into information that can be displayed on the user-side device when providing the selected information to the user-side device. How to provide information. 4. After providing the selected information to the user-side device, a history of operations performed by the user in the user-side device is stored, and provided using the operation history. Calculating the degree of relevance of the obtained information to the user's interest as a degree of relevance, storing the relevance, and adding or deleting a keyword ID to or from the user profile with reference to the degree of relevance for each piece of information. 2. The information providing method according to claim 1, wherein the weight of the keyword in the user profile is updated. 5. For each piece of information in the center-side device in which the information has been stored, quantitatively calculate how much the information matches the user's interest, select the information based on the result, and use the information. In a method of providing information to a user side device, a unique number (hereinafter, referred to as a keyword ID) is assigned to a character string of a keyword of text information held in the center side device; A keyword is extracted from the text information, the number of appearances of the keyword in each piece of text information stored in the center device is counted, and the keyword is stored in an information profile together with a keyword ID corresponding to the keyword. The keyword I corresponding to the keyword as the target and the degree of interest in the target
D is stored in the user profile together with the weight of the keyword, and an appearance frequency indicating a rate of occurrence of the keyword in all the text information or the quantitatively sufficient text information stored in the center-side device is obtained. The weight of the keyword is calculated from the number of appearances and the frequency of appearance of the information profile, and a matching score is calculated based on the content of the user profile and the weight of the extracted keyword. An information providing method, comprising: selecting information to be provided to the user-side device according to the matching score; and transmitting the selected information to the user-side device. 6. The information providing method according to claim 5, wherein the keyword ID is assigned to a character string of a keyword in the information, and the keyword ID is stored in a first table. 7. The method according to claim 5, wherein when providing the selected information to the user-side device, information to be provided to the user is edited into information that can be displayed on the user-side device according to the matching score. How to provide information. 8. After providing the selected information to the user-side device, a history of operations performed by the user in the user-side device is stored, and provided using the operation history. Calculating the degree of relevance of the obtained information to the user's interest as a degree of relevance, storing the relevance, and adding or deleting a keyword ID to or from the user profile with reference to the degree of relevance for each piece of information. 6. The information providing method according to claim 5, wherein the weight of the keyword in the user profile is updated. 9. For each piece of information in which information has been stored,
Calculate quantitatively how much the user's interest is met, select information based on the result, and obtain the information from the center device to be provided to the user device and the center device. An information providing system comprising a user-side device, wherein the center-side device includes: an information storage unit that stores information to be provided to a user; and a keyword extracted and extracted from the information storage unit. Information profile generating means for assigning a weight to the keyword, and registering a keyword ID corresponding to the keyword in the information profile; and a degree of interest in the information corresponding to the keyword for each user, the weight including the keyword ID corresponding to the keyword. Holding the user information holding means, based on the information profile and the contents of the user information holding means, A matching score calculating unit for calculating a matching score that is a degree of how much the corresponding information matches the user's interest; and the user side according to the matching score calculated by the matching score calculating unit. An information providing system comprising: an information selecting unit that selects information to be transmitted to a device; and a transmitting unit that transmits information selected by the information selecting unit to the user-side device. 10. A keyword ID table which uniquely assigns and holds a keyword ID corresponding to a character string of a keyword, wherein the information profile generating means refers to the keyword table and generates a keyword corresponding to the keyword. ID
The information providing system according to claim 9, further comprising a unit for acquiring the information. 11. The user-side device, the operation-history holding means for holding history information operated on the information transmitted from the center-side device, and the history information held in the operation history holding means, A history information transfer unit that transfers the information to the center device at a predetermined cycle or at an arbitrary cycle, wherein the center device transmits the history information acquired from the user device by the transmission unit. A fitness calculating means for calculating a fitness that indicates how suitable the transmitted information is to the interest of the user; and a content of the user information holding means based on the fitness determined by the fitness calculating means. 10. The information providing system according to claim 9, further comprising a user information updating unit for updating the information. 12. The user information updating unit includes a unit that adds / deletes a keyword ID of the user information holding unit or changes a weight of the keyword ID based on the degree of matching. Information providing system. 13. Quantitatively calculating, for each piece of information in which information has been accumulated, how much the information matches the user's interest, selecting information based on the result, and providing it to the user-side device. An information providing system comprising: a center-side device that performs the operation; and a user-side device that obtains the information from the center-side device. The center-side device includes an information storage unit that stores information to be provided to a user. An information profile generating unit that extracts a keyword from the information storage unit, counts the number of appearances of the extracted keyword in each piece of information in the information storage unit, and holds the number together with a keyword ID corresponding to the keyword; User information holding means for holding a weight together with a keyword ID corresponding to the keyword as a degree of interest in information corresponding to the keyword for each user; Information storage means all the information stored in or frequency of occurrence of any keyword in quantitatively sufficient information,
A keyword appearance frequency holding unit that holds the keyword together with the keyword ID corresponding to the keyword; a weight of the extracted keyword is calculated using the number of appearances and the frequency of appearance in the information corresponding to the keyword; A matching score calculating unit for calculating a matching score indicating a degree to which the information corresponding to the extracted keyword matches the user's interest based on the content of the holding unit; Information selecting means for selecting information to be transmitted to the user-side device according to the obtained matching score, and transmitting means for transmitting the information selected by the information selecting means to the user-side device. Information providing system. 14. A keyword ID table for uniquely assigning and holding a keyword ID corresponding to a character string of a keyword, wherein the information profile generating means refers to the keyword table and refers to a keyword corresponding to the keyword. ID
14. The information providing system according to claim 13, further comprising: means for acquiring the information. 15. The user-side device, the operation-history holding means for holding history information for operating information transmitted from the center-side device, and the history information held in the operation-history holding means, A history information transfer unit that transfers the information to the center device at a predetermined cycle or at an arbitrary cycle, wherein the center device transmits the history information acquired from the user device by the transmission unit. A fitness calculating means for calculating a fitness that indicates how suitable the transmitted information is to the interest of the user; and a content of the user information holding means based on the fitness determined by the fitness calculating means. 14. The information providing system according to claim 13, further comprising user information updating means for updating the information. 16. The user information updating means includes means for adding / deleting a keyword ID of the user information holding means or changing a weight of the keyword ID based on the degree of matching. Information providing system.