JP2019066979A - Search device, control method and program therefor, search system, control method and program therefor - Google Patents

Abstract

To present further appropriate search conditions, and to enable efficient acquisition of search results that reflect user's intention.SOLUTION: A search device capable of communicating with a storage unit storing search target data accepts a search condition for searching for search target data, searches for the stored data according to the search condition, determines whether or not there is a co-occurrence relation among a plurality of words included in the data obtained by the search, regards a plurality of words having the co-occurrence relation as a co-occurrence word group, accepts a selection of the co-occurrence word group from a plurality of co-occurrence word groups, and executes the search based on the words contained in this co-occurrence word group.SELECTED DRAWING: Figure 7

Description

  A search device, a control method and a program thereof, and a search system, a control method thereof and a program, capable of presenting more appropriate search conditions and efficiently acquiring a search result reflecting a user's intention.

  In recent years, personal computers have spread in companies and homes, and the Internet has become familiar, and there are many opportunities to search for information. In the information retrieval technology, various methods for improving accuracy have been considered conventionally.

  However, even if the search accuracy is improved, if the keyword (search condition) input by the user is inappropriate, the search result intended by the user can not be obtained. In order to return the result intended by the user, it is necessary to have a great deal of skill in how to select the word to be set as the condition, and even the skilled person often reselects the word through trial and error, which is inefficient It is

  In Patent Document 1, when the search process is performed on the search condition input by the user, the degree of contribution of the search term included in the search condition to obtain the search result is displayed together with the corresponding search result. The degree of contribution is visualized, for example, by a bar graph.

  Change the degree of contribution by operating the size of the bar graph with the + button. Since the degree of contribution changes the weight of the search term, the order of the search results is also changed, and the user's intention comes to the top.

JP 2007-219722 A

  In the technique of Patent Document 1, after obtaining the search result, the user changes the order so that the document intended by the user comes higher by adjusting the weight of the word used as the search condition while looking at the search result. It is possible.

  However, in Patent Document 1, since only the importance of the search term that is the first input condition is changed, only the order is changed, and a new document is not presented. That is, it is not possible to add a word that the user did not notice when designating a search condition, and further to create a search condition close to the user's intention and re-search. Furthermore, there is a problem that only the order of the documents obtained as the current search result is replaced, and the document which was not initially included in the search results can not be obtained by adjusting as much.

  An object of the present invention is to provide a system that presents more appropriate search conditions and enables efficient acquisition of search results in which the user's intention is reflected.

  In order to achieve the above object, the present invention is a search apparatus capable of searching for data stored in a storage unit as a search target, and receiving means for receiving a search condition for searching for the data to be searched. A search unit for searching for data to be searched stored in the storage unit based on the search condition received by the reception unit; and a co-occurrence relation with a plurality of words included in the data searched by the search unit A co-occurring word extraction unit that uses a plurality of co-occurring words as co-occurring word groups, and a selection acceptance unit that receives selection of co-occurring word groups from the plurality of co-occurring word groups And a search unit that executes a search based on words included in the co-occurrence word group received by the selection receiving unit.

  According to the present invention, more appropriate search conditions can be presented, and search results reflecting the user's intention can be efficiently acquired.

It is a figure showing an example of the functional composition concerning the embodiment of the present invention. It is a block diagram showing an example of the hardware constitutions of the information processor concerning an embodiment of the present invention. It is a figure showing an example of the flow chart of the search processing concerning the embodiment of the present invention. It is a figure which shows an example of the flowchart of the process which accepts the new instruction | indication with respect to the user according to embodiment of this invention, and which designates new conditions and receives the new instruction | indication with respect to a search. It is a figure which shows an example of the document used as the search object concerning embodiment of this invention. It is a figure for demonstrating an example of the co-occurrence word memory | storage part which links | relates and memorize | stores the document of the search result which concerns on embodiment of this invention, and the word contained in the said document. It is a figure for showing an example of a user interface for displaying a search result concerning an embodiment of the present invention, and specifying a new search condition to a user. It is a figure for showing an example of a user interface for displaying a search result concerning an embodiment of the present invention, and specifying a new search condition to a user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing an example of a functional configuration of an information processing apparatus 100 (corresponding to a search apparatus) according to an embodiment of the present invention.

The search condition receiving unit 101 receives an input character string as a search condition for searching a text document. When the information processing apparatus according to the embodiment of the present invention is a computer that functions as a client apparatus, the input character string may be a functional unit that receives an input directly from a user who uses the computer. Also, it may be a functional unit accepted from another application program or the like operating on the computer. When the information processing apparatus in the embodiment of the present invention is a server on a network, it may be a functional unit that receives communication information from another information processing apparatus via the network.
The document search unit 102 searches for the text document stored in the document storage unit 121 based on the input character string acquired in the above-described procedure. The search may be performed on an index previously generated from the text document, not the text document itself. The technology relating to text document search and index generation is a well-known technology and will not be described in detail.

  The co-occurrence word extraction unit 103 analyzes a character string included in the text document, which is a result of the search by the document search unit 102, and extracts a word. Furthermore, based on a situation in which each word is included in a plurality of different documents, and conversely, a situation in which different words are included in the same document, groups of co-occurring words are generated. There may be a plurality of groups of co-occurring words. Since the method of extracting co-occurring words is a well-known technique, the detailed description is omitted in the embodiment of the present invention.

  The co-occurrence word presentation unit 104 displays the co-occurrence words extracted by the co-occurrence word extraction unit 103 in a distinguishable manner for the user for each group having a co-occurrence relation (hereinafter referred to as a co-occurrence word group). One word may be included in a plurality of co-occurring word groups. For example, in FIG. 7, the word "AI" constitutes one co-occurrence word group together with the word "deep learning", but another co-occurrence word group is also formed as another word "big data" doing.

  The co-occurrence word group presented by the co-occurrence word presentation unit 104 is selected by the user and used for re-search. Therefore, the selected co-occurrence word receiving unit 105 receives which co-occurrence word group the user has selected and how the re-search method is instructed.

  FIG. 2 is a block diagram showing an example of the hardware configuration of the information processing apparatus 100 according to the embodiment of the present invention. In the present embodiment, a search system including a search device is realized by one information processing system, but data is stored in a plurality of storage units as in an external server, and the information processing apparatus 100 stores the data in these storage units. Naturally, the stored data may be retrieved.

  As shown in FIG. 2, the information processing apparatus 100 includes a central processing unit (CPU) 201, a random access memory (RAM) 202, a read only memory (ROM) 203, an input controller 205, and a video controller 206 via a system bus 204. A memory controller 207, a communication I / F controller 208, and the like are connected. The CPU 201 centrally controls the devices and controllers connected to the system bus 204.

  In addition, the ROM 203 or the external memory 211 (corresponding to a storage unit) implements a function that is executed by a BIOS (Basic Input / Output System) or an OS (Operating System), which is a control program of the CPU 201, and each server or PC. The various programs etc. which are needed in order to carry out later are stored. Also, information necessary to implement the embodiment of the present invention is stored. The external memory may be a database.

  The RAM 202 functions as a main memory, a work area, and the like of the CPU 201. The CPU 201 loads programs necessary for execution of processing from the ROM 203 or the external memory 211 to the RAM 202 and executes the loaded programs to realize various operations.

  The input controller 205 also controls input from a keyboard (KB) 209 and a pointing device such as a mouse (not shown).

  The video controller 206 controls display on a display such as the display 210. The display may be a display such as a liquid crystal display. These are used by the administrator as needed.

  The memory controller 207 is an external storage device (hard disk (HD)) for storing a boot program, various applications, font data, user files, editing files, various data, etc., a flexible disk (FD), or PCMCIA (Personal Computer). Memory Card International Association) Control access to an external memory 211 such as a Compact Flash (registered trademark) memory connected via an adapter to a card slot.

  The communication I / F controller 208 connects to and communicates with external devices via a network, and executes communication control processing in the network. For example, communication using TCP / IP (Transmission Control Protocol / Internet Protocol) is possible.

  The CPU 201 can display the image on the display 210 by executing, for example, an outline font rasterization process on a display information area in the RAM 202. Further, the CPU 201 enables user instruction by a mouse cursor (not shown) or the like on the display 210.

  Various programs to be described later for realizing the present invention are stored in the external memory 211, and are executed by the CPU 201 by being loaded into the RAM 202 as necessary.

  FIG. 3 is a diagram showing an example of a flowchart of search processing according to the embodiment of the present invention. Each step of the flowchart in FIG. 3 is executed by the CPU 201 on the information processing apparatus 100.

  In step S301, the search condition receiving unit 101 receives a character string (corresponding to a search condition) as a condition for searching the text document by the document search unit 102 (corresponding to a receiving unit). As an example for describing the embodiment of the present invention, it is assumed that a search condition (character string) "artificial intelligence, machine learning" is accepted.

  In step S302, the document search unit 102 acquires a list of text documents matching the condition from the document storage unit 121 using the above-described character string as a search condition (corresponding to a search unit). An example of the document storage unit 121 will be described with reference to FIG.

  In FIG. 5, reference numeral 501 denotes a document to be searched. In the example of FIG. 5, the text documents are up to 501a to 501n. Among the documents 501, documents including both or any of the above-described search conditions “artificial intelligence” and “machine learning” are search results. In the example of FIG. 5, there are five documents 501a to 501e. The words that match the search conditions are bolded and underlined. For example, in the document 501a, one of "machine learning" matches. In the present embodiment, the document 501 is described as a text document, but the search target may be a document in the image data format.

  Further, although co-occurring words will be described later, underlines are drawn for the words that become co-occurring words.

  In step S303, co-occurring word extraction unit 103 analyzes the above-mentioned document (501a to 501e in the above-mentioned example) which is the search result, and co-occurring word among the words included in any of the text documents. By determining the co-occurrence relationship, multiple words having a co-occurrence relationship are extracted. (Corresponds to co-occurrence word extraction means)

  In this example, words appearing simultaneously in two or more different documents (501) are used as co-occurring words for the sake of explanation. For example, “AI” and “deep learning” are regarded as co-occurring words because they appear together twice in 501 a and 501 c. On the other hand, in 501a, two words "word" and "media" co-occur, but they do not co-occur in documents (501b-501e) included in other search results, so co-occurring words Not considered.

  Note that using two or more different documents and simultaneously appearing words as co-occurring words is for convenience of explanation only, and other methods (other criteria in co-occurring word extraction that is a well-known technique) It goes without saying that co-occurring words may be determined based on.

  The state in which the word (co-occurrence word) extracted by the co-occurrence word extraction unit 103 is stored in the co-occurrence word storage unit 311 will be described with reference to FIG.

  In FIG. 6, the co-occurrence word storage unit 311 is a table of a word list 601 extracted as a co-occurrence word and a document list 602 including the co-occurrence word. This table is for convenience of illustration only, and other configurations are included in the scope of the present invention.

  Although "1" is described in the column where the number is given, for example, the column where the document 501a and the word "AI" intersect, this is a word that belongs to "No. 1" of the co-occurrence word group. "AI" is included in the document 501a. Since the word "deep learning" is designated as "first" in the document 501a, these two words become co-occurrence words. The co-occurring word group “No. 1” is also included in the document 501 c.

  Further, as described above, the words “word”, “media” and the like with the mark “Δ” included in the document 501 a indicate the words that appeared but not co-occurring words. Although described on the explanation, these words that are not co-occurring words may not be included in the co-occurring word storage unit 311.

  Furthermore, "o" is described in the "AI" column of the document 501b. This indicates that the word "AI" is not a co-occurring word in the document 501b, but a co-occurring word in other documents.

  In step S304, the document search result is displayed, and the co-occurrence word presentation unit 104 displays the co-occurrence word group extracted by the co-occurrence word extraction unit 103 by a method selectable by the user (display control Equivalent to means). However, if there are no co-occurring words in the first place, only the document list of the search results is displayed.

  First, the screen displayed here will be described with reference to FIG. In the search result list display screen (700), the left side screen (701) represents a screen of a known search system. That is, 701 includes a search condition input field (703), a button (704) for instructing a search based on the input field (703), and a portion (706) for displaying a document list of search results. There is. For example, "artificial intelligence" and "machine learning" are input in the search condition input field (703), and as a result of pressing the search button (704), five documents of search results for the document storage unit 121 are displayed. A heading is displayed (706). When the user designates a specific document from the list of 706, the details in the designated document are displayed as a screen. This screen (FIG. 8) will be described in detail in the process of the flowchart of FIG.

  This is an interface that displays a list of co-occurring word groups and receives the user's re-search operation.

  In the present embodiment, as shown in FIG. 6, since three groups of co-occurring words designated by 1 to 3 of the circle numbers are extracted, three co-occurrences in 702 are made according to the groups. Word groups 705a, 705b, 705c are displayed. In the example of this figure, for example, it is assumed that the user selects 705b whose frame is a thick line. In this example, only one is selected, but a plurality may be selected.

  Here, since a group of co-occurring words is a combination of words that are “probably in the same document”, it indicates a tendency associated with those documents. In particular, the search conditions entered by the user may not always be appropriate. For example, the user may think of a certain word, or may not be aware of the connection with the content of a document having a specific tendency. However, presenting co-occurring words as a group has an effect of enabling the user to notice a tendency that he / she is not aware at first.

  For example, it is expected that 705a and 705b tend to have technical relevance to the initially input search condition. On the other hand, 705c is expected to tend to have business relevance. Therefore, by displaying identifiably for each group of co-occurring words, the user can analyze in detail what he / she wants to know and select a keyword as a condition when re-searching. That is, it is possible to obtain an effect that it is possible to clearly indicate the "intention" of the search.

  After designating the group of co-occurrence words to be used in the re-search, the user presses either the additional search button 707 or the new search button 708. This indicates the search condition at the time of the re-search. When the additional search button 707 is pressed, the word of the co-occurrence word group selected on this screen is also added to the condition while the original search condition remains, and the re-search is executed (corresponding to the first search method) ). On the other hand, when the new search button 708 is pressed, the original search condition is cleared, and the re-search is executed on the condition of only the word of the co-occurrence word group selected on this screen (the second search method). Equivalent to). The search method is not limited to this, and another search method may be further provided.

  Here, assuming that the co-occurrence word selection process by the user is completed, the description returns to the flowchart of FIG. 3.

  In step S305, it is determined in step S303 whether co-occurring words have been extracted in the first place. Specifically, in the co-occurring word storage unit 311 described with reference to FIG. 6, it is determined whether or not there is a co-occurring word group (circled numbers). If the co-occurrence word is extracted (in the case of YES), the process proceeds to step S306. If the co-occurring word is not extracted (in the case of NO), the flowchart of FIG. 3 ends, and the processing for one search is completed.

  In step S306, the state of the co-occurrence word selected by the user is returned, and the process will be described in detail with reference to the flowchart of FIG.

  In step S307, the process branches depending on the state returned in step S306. When the user has not selected the co-occurrence word (in the case of NO), the search is completed in the state of being searched based on the search condition initially received in step S301 (step S302).

  When the user selects the co-occurrence word in step S306 (in the case of YES), the search is changed from the search condition initially received in step S301. Therefore, the process returns to step S302 to perform a re-search. Thereafter, the above-described processing is repeated.

  This completes the description of the process according to the flowchart of FIG. Next, the process of the flowchart of FIG. 4 will be described for explaining the process of step 306 in detail.

  FIG. 4 is a diagram showing an example of a flowchart of a process of causing a user to designate a new condition according to an embodiment of the present invention and accepting a new instruction for a search. Each step of the flowchart in FIG. 4 is executed by the CPU 201 on the information processing apparatus 100.

  At the time of processing the flowchart of FIG. 4, if the search result and the co-occurring word are present, the information is presented to the user at step S304 of FIG. The screen is described in detail in step S304 of FIG. 3 described above.

  In step S401, a list of documents as a search result is displayed as a display screen (FIG. 7), or details of specific document contents are displayed according to the user's operation instruction from the list display (FIG. 7) (FIG. 8). To determine. If the user does not select a specific document and displays the list (FIG. 7) (in the case of NO), the process proceeds to step S403. If the user designates a specific document and performs an operation to display the information in the document in detail (in the case of YES), the operation is accepted, and the process proceeds to step S402.

  In step S402, details of a specific document designated by the user are displayed, and an operation from the user is accepted. This screen example has already been described in detail in FIG. FIG. 8 is a view for showing an example of a user interface for displaying a search result and designating a new search condition to a user according to the embodiment of the present invention.

  A screen 800a displays the contents of the specific document selected by the user in detail. In FIG. 7, the user can not confirm the details of the individual documents, and can select a group of co-occurring words which seems to reflect the user's intention. In 800a, after confirming the detailed contents of the document, it is determined whether the information is intended by the user, and then it is considered whether or not the designated co-occurrence word should be added to the search condition. It is possible to obtain

  In this example, a document 501 d is displayed. The document 501d includes two co-occurrence word groups 705b and 705c. In order to make the co-occurrence word group intelligible, for example, in 800 a, the co-occurrence word group 705 b may be surrounded by a dotted line (801), and the co-occurrence word group 705 c may be surrounded by a solid line (802). It goes without saying that the type of line is merely an example, and any display format such as color and font may be used, as long as the co-occurrence word group can be identified.

  In this screen, specify the character string of the co-occurring word you want to make a condition for re-search by clicking with the mouse, etc. When one word is designated, only that word may be selected, or all co-occurring words in the same group may be selected. Furthermore, a plurality of words and a plurality of co-occurrence word groups may be selectable.

  After the search, for example, it is specified whether an additional search or a new search is to be performed from the menu 803. 803 may be arranged in advance on the screen (800a), or a pop-up menu may be displayed by an operation such as right-clicking the mouse after selecting a word. It is needless to say that the selection method of this operation is a design matter to the last, and any method can be used as long as the both can be distinguished.

  Next, 800b will be described. In the example of 800a, the displayed document (501d) contains all co-occurring words. However, in the document (501b) of 800b, the word "AI" is included as an example, and this "AI" is a component of the co-occurrence word group in other documents (circle number 1 in FIG. 6). ).

  Therefore, it is clearly shown to the user that the word "AI" is another document but constitutes a co-occurrence word. By clearly indicating to the user as described above, the system can receive the user to determine whether or not to use as a co-occurrence word group as a co-occurrence word group although it is not included in the document 501 b. You may

  The co-occurrence word group selection on the detail screen has been described above. Although the details of one document are displayed here and the co-occurrence word group is selected only in that, the co-occurrence word group is displayed on each screen while repeatedly displaying details of a plurality of documents that the user seems to request You may choose

  As a result, while confirming the actual content of the document, it is possible to obtain an effect of determining whether the co-occurrence word group is useful as an intention for searching for information desired by the user.

  This completes the explanation of the operation for the user to select the co-occurrence word group from the screen of the document detail display, and the description returns to the explanation of the flowchart in FIG.

  In step S403, the co-occurrence word group selection situation described in the screen of FIG. 7 or step S402 (and the screen of FIG. 8) is accepted. It is assumed that the reception of the selection status includes the situation that “co-occurrence word group is not selected” or “only co-occurrence word group is not selected and only words are selected on the detail screen of FIG. 8”.

  In step S404, it is determined whether the co-occurrence word group or the word is selected by the user (corresponding to selection accepting means). When the co-occurrence word group or the word is not selected (in the case of NO), the acceptance of the co-occurrence word is finished, and the processing of the flowchart of FIG. 4 is completed. Returning to FIG. 3, the process is performed as NO in step S307. If the co-occurrence word group or the word is selected (in the case of YES), the process proceeds to step S405.

  In step S405, the method of executing the re-search designated by the user is further received. When the user selects the additional search button 707 or the new search button 708 in the search result list screen (FIG. 7) or by pressing the additional search button or the new search button in the document detail display (FIG. 8), Accept an indication of additional search or new search.

  In step S406, it is determined whether the instruction from the user accepted in step S405 is an additional search or a new search.

  If it is determined that the search is a new search, the process proceeds to step S407, the search condition received in step S301 is deleted, and the co-occurrence word group or word received in step S403 is newly set as a search condition.

  If it is determined that the search is an additional search, the process proceeds to step S408, and the co-occurrence word group or word received in step S403 is additionally set as a search condition without setting the search condition received in step S301.

  This is the end of the description of the process of the flowchart of FIG.

  As described above, according to the present invention, it is possible to present more appropriate search conditions and efficiently acquire search results in which the user's intention is reflected.

  The configuration of the various data described above and the contents thereof are not limited to this, and it is needless to say that they are configured in various configurations and contents depending on the application and purpose.

  Although some embodiments have been described above, the present invention can be embodied as, for example, a system, an apparatus, a method, a computer program or a recording medium, and more specifically, a plurality of devices. The present invention may be applied to a system constituted by the above, or may be applied to an apparatus consisting of one device.

  Further, the computer program in the embodiment of the present invention is a computer program capable of executing the processing method of the flowcharts shown in FIGS. 3 to 4 by the computer, and the storage medium of the embodiment of the present invention is the processing of FIG. A computer program is stored that is executable by the computer. The computer program in the embodiment of the present invention may be a computer program for each processing method of each device shown in FIGS.

  As described above, a recording medium recording a computer program for realizing the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU or MPU) of the system or apparatus is stored in the recording medium. It goes without saying that the object of the present invention can also be achieved by reading and executing a program.

  In this case, the computer program itself read out from the recording medium realizes the novel functions of the present invention, and the recording medium storing the computer program constitutes the present invention.

  As a recording medium for supplying a computer program, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a DVD-ROM, a magnetic tape, a non-volatile memory card, a ROM, an EEPROM, Silicon disks, solid state drives, etc. can be used.

  Further, by executing the computer program read by the computer, not only the functions of the above-described embodiment are realized, but also an operating system (OS) or the like operating on the computer based on the instructions of the computer program. It goes without saying that a part or all of the actual processing is performed, and the processing realizes the functions of the above-described embodiments.

  Furthermore, after the computer program read from the recording medium is written to a memory provided to a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function is executed based on the instruction of the computer program code. It goes without saying that the case where the CPU or the like provided in the expansion board or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiment are realized by the processing.

  Further, the present invention may be applied to a system constituted by a plurality of devices or to an apparatus comprising a single device. It goes without saying that the present invention is also applicable to the case where it is achieved by supplying a computer program to a system or apparatus. In this case, by reading a recording medium storing a computer program for achieving the present invention into the system or apparatus, the system or apparatus can receive the effects of the present invention.

  Furthermore, by downloading and reading out a computer program for achieving the present invention from a server on a network, a database or the like by a communication program, the system or apparatus can receive the effects of the present invention.

  In addition, the structure which combined each embodiment mentioned above and its modification is also contained in this invention altogether.

100 information processing apparatus 101 search condition reception unit 102 document search unit 103 co-occurrence word extraction unit 104 co-occurrence word presentation unit 105 selection co-occurrence word reception unit 121 document storage unit 311 co-occurrence word storage unit

Claims (10)

A search device capable of searching for data stored in a storage unit as a search target,
A receiving unit for receiving a search condition for searching for the search target data;
Search means for searching for search target data stored in the storage unit based on the search condition received by the reception means;
Co-occurrence word extraction means for judging whether or not there is a co-occurrence relation between a plurality of words included in the data searched by the search means, and making a plurality of words having a co-occurrence relation as a co-occurrence word group;
A selection accepting unit that accepts selection of a co-occurrence word group from the plurality of co-occurrence word groups;
Furthermore, the search unit executes a search based on a word included in the co-occurrence word group received by the selection reception unit. A display control means for controlling to display a co-occurrence word group consisting of a plurality of the words contained in the data searched by the search means and having a co-occurrence relation, according to claim 1. Search device. The display control means, when displaying the data stored in the storage unit searched by the search means, a word included in the co-occurrence word group and a word not included in the co-occurrence word group The search apparatus according to claim 2, characterized in that control is performed to display in a discriminable manner. The search device according to claim 2 or 3, wherein the display control means controls to display the words of the co-occurrence word group whose selection is accepted by the selection acceptance means. A first search method for searching data stored in the storage unit based on words included in the co-occurrence word group and the search condition; and searching based on the words included in the co-occurrence word group 2. A search method accepting means for receiving specification of a search method including at least two search methods, further comprising:
When the search method reception means receives the specification of the first search method, the search means stores data stored in the storage unit on the basis of a word included in the co-occurrence word group and the search condition. 5. The search method receiving unit according to any one of claims 1 to 4, wherein, when the search method receiving unit receives the specification of the second search method, the search is performed based on a word included in the co-occurrence word group. The search device described in the section. A control method of a search device capable of searching for data stored in a storage unit as a search target,
A receiving step of receiving a search condition for searching for the search target data;
A search step of searching for search target data stored in the storage unit based on the search condition received in the reception step;
Determining whether or not there is a co-occurrence relation between a plurality of words included in the data searched in the search step, and co-occurring word extraction step in which a plurality of words having a co-occurrence relation are a co-occurrence word group;
A selection receiving step of receiving selection of a co-occurrence word group from the plurality of co-occurrence word groups;
Furthermore, in the control method of the search apparatus, the search step executes a search based on a word included in the co-occurrence word group received by the selection receiving step. A program that can be executed by a search device capable of searching for data stored in a storage unit as a search target,
The search device
A receiving unit for receiving a search condition for searching for the search target data;
Search means for searching for search target data stored in the storage unit based on the search condition received by the reception means;
Co-occurrence word extraction means for judging whether or not there is a co-occurrence relation between a plurality of words included in the data searched by the search means, and making a plurality of words having a co-occurrence relation as a co-occurrence word group;
Function as selection accepting means for accepting selection of co-occurrence word groups from the plurality of co-occurrence word groups,
Furthermore, the program is characterized in that the search means executes a search based on words included in the co-occurrence word group accepted by the selection acceptance means. A search system including a search device capable of searching for data stored in a storage unit as a search target,
A receiving unit for receiving a search condition for searching for the search target data;
Search means for searching for search target data stored in the storage unit based on the search condition received by the reception means;
Co-occurrence word extraction means for judging whether or not there is a co-occurrence relation between a plurality of words included in the data searched by the search means, and making a plurality of words having a co-occurrence relation as a co-occurrence word group;
A selection accepting unit that accepts selection of a co-occurrence word group from the plurality of co-occurrence word groups;
Furthermore, the search system executes a search based on a word included in the co-occurrence word group accepted by the selection accepting means. A control method of a search system including a search device capable of searching for data stored in a storage unit as a search target,
A receiving step of receiving a search condition for searching for the search target data;
A search step of searching for search target data stored in the storage unit based on the search condition received in the reception step;
Determining whether or not there is a co-occurrence relation between a plurality of words included in the data searched in the search step, and co-occurring word extraction step in which a plurality of words having a co-occurrence relation are a co-occurrence word group;
A selection receiving step of receiving selection of a co-occurrence word group from the plurality of co-occurrence word groups;
Furthermore, in the control method of the search system, the search step executes a search based on a word included in the co-occurrence word group received by the selection receiving step. A program executable by a search system including a search device capable of searching for data stored in a storage unit as a search target,
The search system
A receiving unit for receiving a search condition for searching for the search target data;
Search means for searching for search target data stored in the storage unit based on the search condition received by the reception means;
Co-occurrence word extraction means for judging whether or not there is a co-occurrence relation between a plurality of words included in the data searched by the search means, and making a plurality of words having a co-occurrence relation as a co-occurrence word group;
Function as selection accepting means for accepting selection of co-occurrence word groups from the plurality of co-occurrence word groups,
Furthermore, the program is characterized in that the search means executes a search based on words included in the co-occurrence word group accepted by the selection acceptance means.

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