JP5127553B2 - Information processing apparatus, information processing method, program, and recording medium - Google Patents

Description

  The present invention relates to an information processing apparatus, an information processing method, a program, and a recording medium. More specifically, the present invention relates to an information processing apparatus, an information processing method, a program, and a storage medium that determine the number of documents for each category information of retrieved documents.

  Conventionally, in an information processing apparatus having a search function, when a document is searched from a database based on a search keyword and the search result is displayed, the number of documents is displayed for each classification information obtained from a certain viewpoint. Has been proposed.

For example, Japanese Patent Application Laid-Open No. 07-319905 (Patent Document 1) relates to an information search apparatus that displays a search result searched by a search key. Based on the above, a technique for displaying classification results from a plurality of viewpoints so that they can be simultaneously identified and effectively assisting in narrowing down search results is disclosed.
JP 07-319905 A

  However, in the technique of Patent Document 1, when classifying search results from a plurality of viewpoints, since all search results are classified, the more search results, the longer it takes to classify search results. There was a problem that it took time to display the classification information.

  In view of the above problems, an object of the present invention is to provide an information processing apparatus, an information processing method, a program, and a recording medium that can perform display processing related to search result classification information at high speed when classifying search results. And

An information processing apparatus according to an aspect of the present invention includes a storage unit that stores a document and classification information indicating a classification of the document in association with each other, and stores the document in the storage unit based on a search condition for searching for the document. An information processing apparatus for searching for a document to be read, the total number acquisition means for acquiring the total number of search results searched based on the search conditions from the storage means, and a predetermined number of searches searched based on the search conditions A search result acquisition unit that repeatedly acquires a search result from the storage unit, and every time a search result is acquired by the search result acquisition unit, the total number acquired by the total number acquisition unit, the predetermined number, and the search result Based on the calculation means for calculating the approximate number of documents classified for each classification information, and generating display data for displaying the approximate number calculated by the calculation means for each classification information Comprising a forming unit, and a receiving unit that receives an instruction of obtaining search results from a user, the search result acquisition means, wherein when the instruction by the receiving means has been accepted, to get all search results rest from the storage means The calculation means obtains the number of documents for each classification information based on all the search results acquired by the search result acquisition means, and the generation means displays the number of documents obtained by the calculation means. Display data to generate.

An information processing method according to another aspect of the present invention includes a storage unit that stores a document and classification information indicating a classification of the document in association with each other, and stores the storage based on a search condition for searching for the document. An information processing method in an information processing apparatus for searching a document stored in a means , wherein a total number obtaining step of obtaining a total number of search results searched based on the search condition from the storage means, and based on the search condition A search result acquisition step of repeatedly acquiring a predetermined number of search results searched by the storage means, and each time a search result is acquired by the search result acquisition step, the total number acquired by the total number acquisition step and the predetermined number A calculation step of calculating an approximate number of documents classified for each classification information based on the number and the search result, and an approximate number calculated by the calculation step A generation step for generating display data to be displayed on each of the classification information, and a reception step of receiving an instruction of obtaining search results from a user, the search result acquisition step, an instruction is accepted in the accepting step The remaining search results are acquired from the storage means, and the calculation step determines the number of documents for each classification information based on all the search results acquired in the search result acquisition step, The step generates display data for displaying the number of documents obtained in the calculation step.

  According to the present invention, when the search results are classified, the display processing related to the classification information of the search results can be performed at high speed.

  Embodiments of the present invention will be described below with reference to the drawings.

<General hardware configuration of the system>
First, a schematic hardware configuration of a system according to the present invention will be described. FIG. 1 is a diagram showing an example of a schematic hardware configuration of a system according to the present invention.

  As shown in FIG. 1, an information processing apparatus 100 and clients 105 and 106 are connected via a network, and the information processing apparatus 100 includes a CPU (Central Processing Unit) 101, an HDD (Hard Disk). Drive) 102, RAM (Random Access Memory) 103, and network I / F 104.

  The CPU 101 is a CPU that controls each device, calculates and processes data in a computer. The CPU 101 is an arithmetic device that executes a program stored in the RAM 103, receives data from the input device or the storage device, calculates and processes the data, and outputs the data to the output device or the storage device.

  The HDD 102 is a storage device that stores data related to application software and the like. Further, document data (synonymous with text data) data is stored in the HDD 102, and each time a document is searched, the document data is read or newly written. Document data is a generic term for document ID, title, text data, classification information, and the like.

  The RAM 103 is a storage device that stores or temporarily stores programs and data such as an OS (Operating System) and application software that are basic software executed by the CPU 101.

  The network I / F 104 includes a client 105 having a communication function connected via a network such as a LAN (Local Area Network) and a WAN (Wide Area Network) constructed by a data transmission path such as a wired and / or wireless line. 106 and an interface of the information processing apparatus.

  The clients 105 and 106 are information processing terminals connected to the information processing apparatus 100 via a network, such as a PC (Personal Computer), a PDA (Personal Digital Assistant), and a portable terminal. Further, in the example illustrated in FIG. 1, two clients are connected to the information processing apparatus, but the client may be connected to one or a plurality of information processing apparatuses.

  In the system configured as described above, the information processing apparatus 100 receives a search character string or the like from the clients 105 and 106, performs a search according to a search condition based on the acquired search character string, and displays the search result on the client. Let Note that the information processing apparatus 100 may be configured to perform a whole series of search processing from input of a search character string to display of a search result.

<About Main Functional Configurations of Information Processing Device and Client according to Embodiment 1>
The main functional configurations of the information processing apparatus and the client according to the first embodiment will be described. FIG. 2 is a block diagram illustrating the main functional configurations of the information processing apparatus and the client according to the first embodiment.

  As shown in FIG. 2, the information processing apparatus 100 according to the first embodiment includes a search condition generation unit 203, a search result acquisition unit 204, a classification information acquisition unit 205, a search result total number acquisition unit 206, a storage unit 207, and a classification result generation unit. 208 is comprised. The client 105 (the same applies to the client 106) includes a search character string input unit 201, a classification condition acquisition unit 202, a search result display unit 209, and a classification result display unit 210.

  First, the configuration of the information processing apparatus 100 will be described. The search condition generation unit 203 uses the search character string input from the client 105 side as a search condition, and outputs the search condition to the search result acquisition unit 204, the classification information acquisition unit 205, and the search result total number acquisition unit 206.

  The search condition generation unit 203 generates a search condition based on the acquired search character string, facet, and classification information when facet and classification information described later are input from the classification condition specifying unit 202. The retrieved search conditions are output to the search result acquisition unit 204, the classification information acquisition unit 205, and the search result total number acquisition unit 206.

  Here, the search character string is a word, keyword, sentence, or the like, and is a character string including numbers and symbols. When a sentence is input, the sentence is divided into words by morphological analysis or the like, and a search is performed based on the divided words.

  The search result acquisition unit 204 accesses the storage unit 207 based on the search condition acquired from the search condition generation unit 203 to make an inquiry, and acquires the search result. At this time, it is assumed that the storage unit 207 assigns and stores a full-text index to the search target document, and text data including a search character string included in the search condition is stored in the search condition acquisition unit 204 as a search result. To be acquired.

  Moreover, the search result acquisition means 204 performs a search using a B-tree index, when classification information is contained in a search condition. However, when the number of different classification information is small, the B-tree index is not used. The document data stored in the storage unit 207 is shown in FIG. 3, but details will be described later.

  The search result acquisition unit 204 repeatedly acquires a predetermined number n of search results from the storage unit 207, and transmits the search result to the client side search result display unit 209 each time the search result is acquired.

  The predetermined number n may be set as appropriate by the user, or a preset value may be used.

  The classification information acquisition unit 205 accesses the storage unit 207 based on the search condition acquired from the search condition generation unit 203 and makes an inquiry to acquire the classification information. Here, the classification information may be stored in the storage unit 207 as metadata in association with the document data.

  The classification information indicates the classification of the document and is given for each facet. A facet indicates a viewpoint (viewpoint) of a document, and is information such as a document type, a publication year, and a publisher. As for the classification information, for example, the document information when the facet is “document type” is a book, a paper, a newspaper, and the like, and the document information when the facet is “publication year” is 2006, 2005, or the like. The year information.

  Further, the classification information acquisition unit 205 repeatedly acquires the metadata of the document data including the search character string included in the search condition in the text data from the storage unit 207 by a predetermined number n as in the search result acquisition unit 204. Further, in the search for classification information, when the classification information is designated by the user, the search is performed using the B-tree index. However, the B-tree index is not used when the number of different classification information is small.

  Next, the classification information acquisition unit 205 acquires the classification information from the repeatedly acquired metadata, counts the number of documents of the classification information, and sets the count value for each classification information every time the metadata is acquired. It outputs to 208.

  Here, the processing of the classification information acquisition unit 205 will be described with reference to FIGS. 4 and 5. FIG. 4 is a diagram showing an example of classification information based on metadata acquired from the storage unit 207 when the predetermined number n is 5.

  As shown in FIG. 4, five pieces of text data (document IDs 1, 2, 5, 10, 16) including the search character string included in the search condition are read from the storage unit 207. In addition, classification information is read from the storage unit 207 for each facet (type, publication year, publisher, etc.) in association with the document ID.

  For example, in the example illustrated in FIG. 4, the classification information for the facet “type” of the document ID “1” is “book”, the classification information for the facet “publishing year” is “2006”, and the facet “publishing company”. The classification information indicates “Company A”.

  FIG. 5 is a diagram illustrating an example of the number of pieces of each classification information when focusing on facets. As shown in FIG. 5, focusing on the classification information shown in FIG. 4 for each facet, the number of pieces of each classification information is counted.

  For example, FIG. 5A is an example showing a result of counting the number of pieces of classification information (books, papers, etc.) when the five data shown in FIG. 4 are focused on the facet “type”. FIG. 5B is an example showing a result of counting the number of pieces of each classification information (2006, 2005, etc.) when focusing on the facet “publishing year”. FIG. 5C is an example showing a result of counting the number of pieces of each classification information (Company A and Company B) when focusing on the facet “publisher”.

Returning to Figure 2, the search results the total number obtaining unit 206, based on the search conditions acquired from the search-condition creating unit 203, the text data including the retrieval character string included in the search condition, what items stored in total in the storage unit 207 Is counted, and the count value is output to the classification result generation means 208 as the total number.

  The storage unit 207 stores the search target document in association with the classification information. As described above, it is assumed that the full text index is assigned to the text data, and here, metadata such as registration date and classification information is also given and stored. This makes it possible to search at high speed.

  Here, FIG. 3 is a diagram showing an example of document data stored in the storage means. As shown in FIG. 3, the document data is stored in association with information such as document ID, title, text data, type, publication year, and publisher. Here, the facet indicating the viewpoint of the document is a type, publication year, publisher, and the like, and the classification information indicating the classification of the document is a book, a paper, 2005, 2006, company A, company B, and the like.

  The storage unit 207 may store the classification information with a B-tree index, for example. At this time, an index is not attached to all classification information, but an index is attached only to a large number of different parameters. This is because there is a case where a search cannot be performed at high speed even if an index is attached to a small number of parameters.

  Returning to FIG. 2, the classification result generation unit 208 includes a count value for each classification information acquired from the classification information acquisition unit 205, a count value of the total number of search results acquired from the search result total number acquisition unit 206, and a predetermined number n. Based on the above, the approximate number of documents classified for each classification information is calculated. The classification result generation unit 208 generates display data for displaying the calculated approximate number for each classification information.

  Here, a detailed function of the classification result generation unit 208 will be described with reference to FIG. FIG. 6 is a block diagram illustrating a detailed functional configuration of the classification result generation unit 208. The classification result generation unit 208 includes an approximate number calculation unit 601 and a display data generation unit 602.

  The approximate number calculation means 601 first acquires the count value for each classification information acquired from the classification information acquisition means 205, the count value of the total number of search results acquired from the search result total number acquisition means 206, and the predetermined number n.

  With respect to the predetermined number n, the sum of the count values for each classification information is the predetermined number n. Therefore, the count values for each classification information may be cumulatively added, or may be acquired from the classification information acquisition unit 205. May be.

  Next, the approximate number calculation means 601 calculates the ratio of the count value for each classification information in the acquired predetermined number n. This ratio is obtained by dividing the count value for each classification information by the predetermined number n.

  Next, the approximate number calculation unit 601 calculates a result obtained by multiplying the obtained ratio by the total count value as an approximate number for each classification information, and outputs the calculated approximate number for each classification information to the display data generation unit 602. The calculation procedure described above is not limited, and if the same value is calculated as a result, the count value for each classification information may be multiplied by the total number and then divided by the predetermined number n.

  In addition, each time the approximate number calculation unit 601 acquires the count value for each classification information from the classification information acquisition unit 205, the approximate number is calculated by cumulatively adding the predetermined number n and the count value for each classification information as described above. Each time the approximate number is calculated, it is output to the display data generating means 602.

  The display data generation unit 602 generates display data so that the approximate number for each classification information acquired from the approximate number calculation unit 301 is displayed on the display screen in association with the classification information, and the generated display data is displayed on the client-side classification result display. Transmit to means 210.

  The display data generation unit 602 performs the above-described process every time an approximate number is acquired, and outputs display data to the classification result display unit 210. Note that the display data generation unit 602 may generate display data by rounding round numbers to integers so that round numbers are displayed as integers when generating display data.

  Returning to FIG. 2, the configuration of the client 105 will be described. The search character string input unit 201 inputs a character string for performing a search through an input device such as a keyboard or a touch panel. The search character string input unit 201 transmits the input search character string to the search condition generation unit 203 on the information processing apparatus side.

  The classification condition designating unit 202 selects the selected classification information when the classification information or facet displayed by the classification result display unit 210 is selected by the user (when the user clicks or presses the classification information on the display screen). Are transmitted to the search condition generation unit 203 on the information processing apparatus side.

  When the search result display unit 209 acquires the search result from the search result acquisition unit 204 on the information processing apparatus side, the search result display unit 209 displays the acquired search result on the display screen.

  When the classification result display unit 210 acquires the display data from the classification result generation unit 208 on the information processing apparatus side, the classification display unit 210 displays the acquired display data on the display screen. The classification information is displayed on the display screen so that it can be clicked or pressed by the user.

  FIG. 7 is a diagram illustrating an example of a display screen according to the first embodiment. As shown in FIG. 7, the display screen includes a display area 701 for inputting a search character string, a display area 702 by the search result display means 209, and a display area 703 by the classification result display means 210.

  A display area 701 is a display area for inputting a search character string. The search character string is input by an input device such as a keyboard, a mouse, or a touch panel.

  A display area 702 is an area displayed by the search result display unit 209. In the example shown in FIG. 7, a document title and a part of text data are displayed. In addition, in the display area 702, a document icon may be displayed, or a cover may be displayed when the document is a book or the like.

  A display area 703 is an area displayed by the classification result display unit 210. In the example shown in FIG. 7, classification information is displayed for each facet, and the number of documents is displayed in the classification information. Note that the classification information is configured to be clickable or pressed by the user, and the clicked or pressed classification information is configured to be transmitted to the search condition generation unit 203.

<Regarding Search Result Display Processing in Embodiment 1>
FIG. 8 is a flowchart of search result display processing according to the first embodiment. In step 801, the search result total number acquisition unit 206 acquires total, which is the total number of search results, and outputs the total to the classification result generation unit 208.

  Progressing to step 802 following step 801, the search result acquisition means 204 acquires start + n−1 search results from the start, which is the search start position, using a full-text index or the like, and uses the acquired search results as the search results. It outputs to the display means 209. Thereafter, the search result is displayed on the display screen by the search result display means 209.

  At this time, the search result acquisition means 209 searches using the full-text index when searching for the first time with the character string input by the user. Next, the search result acquisition unit 209 uses the B-tree index to narrow down the search results when the user specifies classification information or the like and narrows down the search results. However, when the number of different classification information is small, the B-tree index is not used.

  It is assumed that the initial value of start is set to 1 because it is from the first document in the document data that matches the search condition. Further, the number n of cases may be set by the user as the number of cases desired to be acquired, or may be appropriately set by the information processing apparatus.

  Proceeding to step 803 following step 802, the classification information acquisition unit 205 performs a search using a full-text index or the like, and acquires start + n−1 classification information from the start. At this time, when the classification information is designated by the user, the classification information may be acquired using the B-tree index. As described above, when the number of different classification information is small, the B-tree index is not used.

  In steps 802 and 803, the number of items to be acquired may be less than n. In this case, the number of acquirable items less than n is acquired. In addition, as a condition that the number of items to be acquired is less than n, there may be a case where the number of documents matching the search condition is less than n or a multiple of n.

  Proceeding to step 804 following step 803, the classification information acquisition unit 205 acquires the number of documents f (v) by counting the number of the same classification information for each classification information v out of the acquired classification information. To do.

  In step 805 following step 804, the classification information acquisition unit 205 adds f (v) to facet (v), and outputs facet (v) to the approximate number calculation unit 601. Note that 0 is set as an initial value in facet (v). Thus, the number of documents for each classification information is cumulatively added.

  Progressing to step 806 following step 805, the approximate number calculation means 205 determines whether or not start + n ≧ total.

If the decision result in the step 806 is NO, the process proceeds to a step 807, where the approximate number calculating means 807
total × facet (v) / (start + n−1) (1)
Is calculated to calculate the approximate number of documents for each classification information, and the calculated approximate number is output to the display data generating means 602. Next, the display data generation unit 602 generates display data based on the acquired approximate number, and outputs the generated display data to the classification result display unit 210. Next, the classification result display unit 210 displays the acquired display data on the display screen.

In step 808 following step 807, the search result acquisition unit 204 and the classification information acquisition unit 205
start = start + n (2)
Is calculated, the start position of start is updated, and the process returns to step 802.

  If the decision result in the step 806 is YES, the process proceeds to a step 809, where the approximate number calculation means 601 determines that facet (v) is not an approximate number but an accurate number, and the facet (v) is displayed data generation means. As described above, facet (v) is displayed on the display screen.

  Note that the processes in step 801, step 802, and step 803 are not necessarily performed in this order, and may be performed in parallel, and the order is not particularly related.

  As described above, according to the information processing apparatus according to the first embodiment, when the search results are classified, the display processing related to the classification information of the search results can be performed at high speed by calculating the approximate number of documents of the classification information.

  In the process shown in FIG. 8, information indicating that the number of documents in the classification information is being updated may be displayed on the display screen until the determination result in step 806 is YES. For example, when the determination result of step 806 is NO, the characters “Updating” are displayed on the display screen, and when the determination result of Step 806 is YES, the characters “Update end” are displayed on the display screen. You may make it make it. Thereby, the user can visually understand that the number of documents of the classification information is still being updated.

  Further, after step 807, a process of waiting for a predetermined time may be added, and it is determined whether or not an instruction to acquire n items has been given by the user, and the instruction in step 808 is given when the instruction is given. It may be. Thus, only when the next n pieces of information are required, the next n pieces of information can be acquired, and unnecessary processing for the user can be omitted.

  In the first embodiment, the information processing apparatus 100 and the clients 105 and 106 are distinguished from each other. However, the information processing apparatus 100 and the clients 105 and 106 are configured as a single unit, and the entire process from the input of the search character string to the display of the search result is performed by one apparatus. May be.

[Modification 1]
A first modification of the information processing apparatus according to the first embodiment will be described. When the user receives an instruction to acquire all the remaining search results, the information processing apparatus according to Modification 1 acquires all the remaining search results and displays the exact number of documents of the classification information.

<Main Functional Configuration of Information Processing Device and Client According to Modification 1>
FIG. 9 is a block diagram illustrating main functional configurations of the information processing apparatus and the client according to the first modification. 9 that have the same functions as those of the components shown in FIG. 2 are denoted by the same reference numerals as those in FIG.

  As shown in FIG. 9, the client 905 has a search result acquisition instruction unit 901 newly added as compared with the client 104 shown in FIG. The search result acquisition instructing unit 901 is a button that is clicked or pressed by the user to acquire all the remaining search results.

  FIG. 10 is a diagram illustrating an example of a display screen in the first modification. An acquisition button 1001 shown in FIG. 10 is a search result acquisition unit 901. When the acquisition button 1001 is clicked or pressed, the instruction reception unit 902 is notified. Also, as shown in FIG. 10, in the first modification, the type, publication year, publisher, etc., which are facets 1002, can be clicked or pressed in order to obtain the exact number of documents.

  Returning to FIG. 9, in the information processing apparatus 900, an instruction receiving unit 902 is newly added as compared with the information processing apparatus 100 shown in FIG. Upon receiving the notification from the search result acquisition instruction unit 901, the instruction reception unit 902 instructs the search result acquisition unit 903 and the classification information acquisition unit 904 to acquire all the remaining search results and classification information.

  The search result acquisition unit 903 and the classification information acquisition unit 904 acquire total from the search result total number acquisition unit 206 and substitute total-start for n. Thus, when the search result and classification information are acquired next time, all the remaining information can be acquired. The process after acquiring all the remaining information is the same as that shown in FIG.

  The instruction receiving unit 902 does not issue an instruction to the search result acquisition unit 903 and the classification information acquisition unit 904, but outputs the total number to the search result acquisition unit 903 and the classification information acquisition unit 904. An instruction may be issued. At this time, when receiving an instruction from the instruction receiving unit 902, the search result total number acquiring unit 206 outputs the total number to the search result acquiring unit 903 and the classification information acquiring unit 904.

  Here, as shown in FIG. 10, when facet 1002 is clicked or pressed, only the clicked or pressed facet displays the exact number of documents for each classification information based on all remaining search results. You may make it do.

  For example, when the facet “type” is clicked or pressed, only the classification information (book, paper, newspaper, magazine) of “type” is displayed in the display area 703 of the classification result, and the displayed classification is displayed. You may make it display the exact document number based on all the search results for every information.

<About a part of the search result display process in Modification 1>
A part of the search result display process in the first modification will be described. FIG. 11 is a flowchart of a part of the search result display process in the first modification. Specifically, FIG. 11 is a flowchart in the case where there is a search result acquisition instruction from the user. Note that when there is no search result acquisition instruction from the user, the processing is the same as that shown in FIG.

  In step 1101, the instruction receiving unit 902 determines whether or not the search result acquisition instruction unit 901 has received a notification to acquire the search result.

  If the determination result of step 1101 is NO, the process returns to step 1101. If the determination result in step 1101 is YES, the process proceeds to step 1102 where the classification information acquisition unit 904 acquires all the remaining classification information v, and the search result acquisition unit 903 acquires all the remaining search results.

  Proceeding to step 1103 following step 1102, the classification information acquisition unit 904 acquires the document number f (v) by counting how many pieces of the same classification information v are included in all the remaining acquired data.

  Subsequent to step 1103, the process proceeds to step 805, and thereafter the same processing as that shown in FIG. 8 is performed.

  As described above, according to the information processing apparatus according to the modified example 1, when an instruction to acquire all remaining search results is received from the user, the classification is performed on the user by acquiring all the remaining search results and classification information. By omitting the intermediate value of the number of documents of information, the exact number of documents can be displayed on the display screen. The first modification is effective when the user does not need an approximate number of documents of classification information but requires an accurate number of documents.

[Modification 2]
A second modification of the information processing apparatus according to the first embodiment will be described. In the second modification, information related to the reliability of the approximate number of documents is displayed on the display screen.

  FIG. 12 is a diagram illustrating an example of a display screen in the second modification. As shown in FIG. 12, the display area 1201 is an area for displaying information related to the reliability of the approximate number of documents. In the example illustrated in FIG. 12, the total is 12345, and the approximate number of documents is currently calculated based on 2000.

  This is because the display data generating means 602 generates display data so that information related to the reliability of the approximate number of documents is displayed at a predetermined position on the display screen based on the cumulative number of total n and the total. Good.

  Note that the information displayed in the display area 1201 may be the actual number of cases where the approximate number has been calculated (the cumulative number of n cases) or the percentage (%) relative to the total.

  As described above, according to the information processing apparatus according to the modified example 2, it is possible to visually understand how reliable the approximate number of documents displayed in the display area of the classification result is. From this, if the user determines that it is an approximate number of documents based on a sufficient number of documents by looking at the information related to reliability, the condition may be further narrowed down by clicking classification information, etc. If it is determined that the number of documents based on the number of documents is an approximate number, the search result may be further acquired.

[Modification 3]
A third modification of the information processing apparatus according to the first embodiment will be described. In the third modification, even if the approximate number of documents is not calculated for specific classification information, the specific classification information is displayed on the display screen. That is, in Modification 3, fixed classification information that is always displayed on the display screen is set.

  FIG. 13 is a diagram illustrating an example of a display screen in the third modification. As shown in FIG. 13, the facet “type” classification information 1301 is set to be always displayed in the display area 703. Therefore, as shown in FIG. 13, even when the approximate number of documents is being displayed, it is possible to display 0 items as in the classification information “magazine”.

  This is because the display data generation unit 602 stores specific classification information in advance, and when the approximate number is acquired from the approximate number calculation unit 601, for this classification information, the approximate number is displayed and the approximate number is acquired. If not, “0” is displayed. Note that specific classification information may be set in advance by an administrator of the information processing apparatus.

  Further, in the third modification example, at the stage of displaying the approximate number, the classification information with the number of documents of 0 is configured to be clickable or pressed by the user. This is because, at the present time, the number of documents may be zero, but depending on the remaining search results, there may be documents classified into this classification information. As a result, when the user clicks or presses down on the classification information with the document count of 0 at the stage of displaying the approximate number, the classification information can quickly determine whether the classification information is really 0 or not. .

  In addition, when the number of documents is also 0 as a result of classifying all the search results, it is only necessary that the classification information cannot be clicked or pressed by the user when it is found that the number is 0. . As a result, it is possible to prevent meaningless search conditions from being narrowed down and erroneous operations by the user.

  As described above, according to the information processing apparatus according to the modified example 3, the specific classification information is displayed on the display screen even when the approximate number is not calculated. It is possible to display to the user what sort of classification information is available.

[Modification 4]
A modification 4 of the information processing apparatus according to the first embodiment will be described. In the fourth modification, the search result acquisition unit 204 and the classification information acquisition unit 205 are integrated.

  In the fourth modification, the search result acquisition unit 204 repeatedly reads out and acquires document data from the storage unit 207 as n search results. The search result acquisition unit 204 extracts only necessary data (title, part of text data) from the n search results acquired and outputs the extracted data to the search result display unit 209.

  Next, the search result acquisition unit 204 counts how many pieces of the same classification information exist for each classification information from the acquired n search results. The counted value is output to the classification result generation unit 208 for each classification information. The above processing is performed every time n search results are acquired from the storage unit 207.

  As described above, the information processing apparatus according to the modification 4 calculates the approximate number of documents of the classification information when the search results are classified even if the search result acquisition unit and the classification information acquisition unit are integrated. Thus, the display processing related to the classification information of the search result can be performed at high speed.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and other than the above-described modifications within the scope of the gist of the present invention described in the claims. In addition, various modifications and changes can be made. In addition, a plurality of or all of the modifications can be combined. It is also possible to record the processing contents described in the first embodiment or each modification as a program on a recording medium, and cause the information processing apparatus to execute the above-described processing by causing the computer to read the recording medium on which the program is recorded. It is.

The figure which shows an example of schematic hardware constitutions of the system which concerns on this invention. FIG. 3 is a block diagram illustrating main functional configurations of the information processing apparatus and the client according to the first embodiment. The block diagram which shows the detailed functional structure of a classification result production | generation means. The figure which shows an example of the document data memorize | stored in a memory | storage means. The figure which shows an example of classification | category information. The figure which shows an example of the number of cases for every classification information. FIG. 3 is a diagram illustrating an example of a display screen according to the first embodiment. 3 is a flowchart of search processing according to the first embodiment. The block diagram which shows the main function structures of the information processing apparatus which concerns on the modification 1, and a client. The figure which shows an example of the display screen in the modification 1. 10 is a flowchart illustrating a part of search processing according to the first modification. The figure which shows an example of the display screen in the modification 2. The figure which shows an example of the display screen in the modification 3.

Explanation of symbols

100, 900 Information processing apparatus 101 CPU
102 HDD
103 RAM
104 Network I / F unit 105, 106 Client 201 Search character string input means 202 Classification condition designation means 203 Search condition generation means 204, 903 Search result acquisition means 205, 904 Classification information acquisition means 206 Search result total number acquisition means 207 Storage means 208 Classification result generation means 209 Search result display means 210 Classification result display means 601 Approximate number calculation means 602 Display data generation means 701, 702, 703 Display area 901 Search result acquisition instruction means 902 Instruction reception means

Claims (7)

An information processing apparatus having storage means for storing a document and classification information indicating the classification of the document in association with each other, and searching for a document stored in the storage means based on a search condition for searching for the document. And
Total number acquisition means for acquiring the total number of search results searched based on the search conditions from the storage means;
Search result acquisition means for repeatedly acquiring a predetermined number of search results searched based on the search condition from the storage means;
Each time a search result is acquired by the search result acquisition unit, an approximate number of documents classified for each classification information is calculated based on the total number acquired by the total number acquisition unit, the predetermined number, and the search result. Calculating means for
Generating means for generating display data for displaying the approximate number calculated by the calculating means for each classification information ;
Receiving means for receiving an instruction to obtain a search result from the user,
The search result acquisition means includes:
When the instruction is accepted by the accepting means, all the remaining search results are acquired from the storage means,
The calculating means includes
Based on all search results acquired by the search result acquisition means, find the number of documents for each classification information,
The generating means includes
An information processing apparatus for generating display data for displaying the number of documents obtained by the calculating means .   The calculation means calculates a ratio of the number of documents classified for each of the classification information in the cumulative number of the predetermined number based on the search result acquired from the search result acquisition means, and the ratio and the total number The information processing apparatus according to claim 1, wherein the approximate number is calculated by multiplying. The generating means includes
The information processing apparatus according to claim 1 or 2, wherein including information relating to the reliability of the approximate number obtained from the predetermined number of the display data. The generating means includes
Specific for classification information, the information processing apparatus according to an item any one of claims 1 to 3 generates display data to display the classification information even when the approximate number is not calculated by the calculation means. Information in the information processing apparatus to search for documents that are stored in the storage means based on a search condition for a storage unit that associates and stores the classification information indicating the classification of documents and the document, searching the document A processing method,
A total number acquisition step of acquiring the total number of search results searched based on the search condition from the storage means;
A search result acquisition step of repeatedly acquiring a predetermined number of search results searched based on the search condition from the storage means;
Each time a search result is acquired by the search result acquisition step, an approximate number of documents classified for each classification information is calculated based on the total number acquired by the total number acquisition step, the predetermined number, and the search result. A calculating step to
A generation step of generating display data for displaying the approximate number calculated in the calculation step for each classification information;
A reception step for receiving an instruction to obtain a search result from the user,
The search result acquisition step includes:
If the instruction is accepted in the accepting step, all the remaining search results are acquired from the storage means,
The calculating step includes:
Based on all the search results acquired in the search result acquisition step, obtain the number of documents for each classification information,
The generating step includes
An information processing method for generating display data for displaying the number of documents obtained in the calculating step . A program for causing a computer to execute the information processing method according to claim 5 . A computer-readable recording medium on which the program according to claim 6 is recorded.

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