JP2009064268A - Retrieval device, retrieval system, retrieval method, and program and recording medium therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a retrieval system suitable for a device for automatically outputting retrieval target information expected by a user based on retrieval result information. <P>SOLUTION: A retrieval device generates retrieval result information holding multiple pieces of retrieval target information extracted as a result of retrieval and an index term used to retrieve the multiple pieces of retrieval target information for each of the multiple pieces of retrieval target information extracted as a result of the retrieval, and outputs the generated retrieval result information to a retrieval result utilization device. The retrieval result utilization device updates a frequency of utilization of the index term for retrieving the retrieval target information with an output instruction accepted therefor among the multiple pieces of retrieval target information extracted as a result of the retrieval, and changes, based on the frequency of utilization of the index term, recommendation ranking of the multiple pieces of retrieval target information extracted as a result of the retrieval. Based on the changed recommendation ranking, the higher ranked retrieval target information is outputted among the multiple pieces of retrieval target information extracted as a result of the retrieval. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a search device, a search system, a search method, a program thereof, and a recording medium for changing an output recommendation order of search results based on a history of output instructions from a user.

Conventionally, when an input of a query word is accepted in a search engine of a web page, a web page including a related word that is a word related to the query word or the query word is searched and output as a search result. . At that time, based on information such as how much the query word and related words are included, the degree of conformity with respect to the query word of the web page is calculated, and the search result in the order of conformity is calculated at the terminal that received the search result. Processing to output a web page. A technique related to a search engine is disclosed in Non-Patent Document 1.
“Standard technology (search engine) database: A information collection method”, “online”, “June 29, 2007 search”, Internet <URL: http://www.jpo.go.jp/shiryou/s_sonota/ hyoujun_gijutsu / search_engine / a / a2.htm>

  By the way, in the search result information output by the search engine as described above, explanations (also referred to as snippets) of each web page are stored and displayed in order of suitability on the terminal that outputs the search result information. The Then, the user reads the explanatory text, specifies the information he / she wants regardless of the order of the fitness, and inputs an instruction to output the specified web page. That is, the output order based on the degree of conformity of the web pages included in the search results extracted by the search engine does not necessarily match the order of the search results expected by the user. Therefore, for example, when the device that has obtained the search result information automatically outputs the search target information expected by the user (not only the web page, but also content information such as program information and music data), The above search engine processing does not necessarily match the user's expectation and causes a problem.

  Therefore, the present invention provides a search device, a search system, a search method, a program thereof, and a recording medium suitable for a device that automatically outputs search target information expected by a user based on information of a search result. It is aimed.

  In order to achieve the above object, the present invention searches based on the input of a query word to search the database for search target information that holds the query word or related words recorded in association with the query word. A plurality of search target information extracted as a result of search and an index word composed of the query word and the related word used for searching the plurality of search target information. Search result information generating means for generating search result information held for each search target information, and the index word for searching the search target information that has received an output instruction among the plurality of search target information extracted as a result of the search And a usage frequency recording means for recording the usage frequency in a usage frequency storage unit.

  Further, the present invention provides the above-described search device, comprising: a recommendation rank changing unit that changes a recommendation rank of a plurality of pieces of search target information extracted as a result of the search, based on the usage frequency of the index word. To do.

  Further, the present invention is the above-described search device, wherein the recommendation order changing unit is recorded in one or a plurality of the index words included in the search target information extracted as a result of the search, and the index word usage frequency recording unit. The degree of similarity with the index word usage frequency is calculated, and the recommended rank of the plurality of search target information extracted as a result of the search is changed according to the level of the similarity.

  Further, the present invention includes an automatic output unit that determines, in the above-described search device, to output upper search target information among a plurality of search target information extracted as a result of the search, based on the recommended order. It is characterized by.

  Further, the present invention provides the above-described search device, wherein the usage frequency recording means receives the notification of the search target information that is instructed to be output in another device among the plurality of search target information extracted as a result of the search, The usage frequency of the index word for searching the search target information is recorded in a usage frequency storage unit.

  Further, the present invention provides a search device that searches the database for search target information that holds the query word or related words recorded in association with the query word based on the input of the query word, and the result of the search A search system using a search result utilization device that receives the information, wherein the search device extracts a plurality of search target information extracted as a result of the search, and the query word used for searching the plurality of search target information, and Search result information generating means for generating search result information for each of a plurality of search target information extracted as a result of the search, and outputting the search result information to the search result utilization device. Search result output means for detecting the search target information for which the search result utilization apparatus has received the output instruction from among the plurality of search target information extracted as a result of the search. The usage frequency of the index word in use, a search system characterized by comprising: a use frequency recording means for recording the use frequency storage unit.

  Further, the present invention provides the above-described search system, wherein the search result utilization device changes recommended ranks of a plurality of pieces of search target information extracted as a result of the search based on the usage frequency of the index word. It is characterized by providing.

  In the search system according to the present invention, the recommendation order changing unit is recorded in the one or more index words included in the search target information extracted as a result of the search, and the index word usage frequency recording unit. The degree of similarity with the index word usage frequency is calculated, and the recommended rank of the plurality of search target information extracted as a result of the search is changed according to the level of the similarity.

  According to the present invention, in the above-described search system, the search result utilization device automatically determines to output higher-order search target information among a plurality of search target information extracted as a result of the search based on the recommendation order. And an output means.

  Further, the present invention is a search method in a search device for searching, from a database, search target information holding a query word or a related word recorded in association with the query word based on an input of the query word. A plurality of search target information extracted as a result of the search, and a plurality of search target information extracted as a result of the search and an index word composed of the query word and the related word used for the search of the plurality of search target information The search frequency information stored in the search frequency information is generated, and the frequency of use of the index word for search of the search target information that has received the output instruction among the plurality of search target information extracted as a result of the search is stored in the usage frequency storage unit. The search method is characterized in that, based on the usage frequency of the index word, the order of recommendation of a plurality of pieces of search target information extracted as a result of the search is changed.

  Further, the present invention provides a search device that searches the database for search target information that holds the query word or related words recorded in association with the query word based on the input of the query word, and the result of the search A search method in a search system comprising a search result utilization device that receives the information of the plurality of search target information extracted as a result of the search and the search device used for searching the plurality of search target information A search result information is generated in which a query word and an index word composed of the related words are stored for each of a plurality of pieces of search target information extracted as a result of the search, and the search device uses the search result information as the search result utilization device. And the search result utilization device selects the index word for searching the search target information that has received the output instruction from among the plurality of search target information extracted as a result of the search. And the search result utilization device changes the recommended order of the plurality of pieces of search target information extracted as a result of the search based on the use frequency of the index word. This is a characteristic search method.

  The present invention also provides a computer of a search device for searching from a database for search target information holding a query word or related words recorded in association with the query word based on the input of the query word. A plurality of search target information extracted as a result, and an index word composed of the query word and the related word used for searching the plurality of search target information are held for each of the plurality of search target information extracted as a result of the search Search result information generating means for generating search result information, among the plurality of search target information extracted as a result of the search, a use frequency storage for the use frequency of the index word for search of search target information that has received an output instruction A usage frequency recording means for recording in a section, a recommended rank change for changing a recommended rank of the plurality of search target information extracted as a result of the search based on the usage frequency of the index word. Is a program for functioning unit as.

  The present invention is also a computer-readable recording medium on which the above program is recorded.

  According to the present invention, information on the frequency of use of index words (one or a plurality of words consisting of a query word and its related words) used to search for search result information instructed to be output by a user or the like in a search result utilization device. And a vector obtained by the frequency with which an index word used for searching for the search target information appears in the search target information among the plurality of search target information stored in the search result information later. A thing with a high similarity (recommended ranking) calculated with a vector obtained based on the usage frequency of each search term that has already been accumulated is selected during automatic output. In addition, when it is detected that the search target information has been used after being automatically output, the information on the frequency of use of the index word used for searching the search target information is updated. Therefore, before or after the automatic output, the index word related to the search target information used by the user is frequently used, and the direction of the vector obtained based on the use frequency of the index word Since the search target information and the search result from which the vector close to the length can be obtained are automatically specified, the search target information expected by the user can be automatically output.

The search system of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing a configuration of a search system according to the first embodiment.
In this figure, reference numeral 1 is a search engine (search apparatus), and 2 is a search result utilization apparatus. The search engine 1 and the search result utilization device 2 are connected via a communication network. The search engine 1 includes an index database 11, a related term database 12, a search target information database 13, a search receiving unit 14, an index word specifying unit 15, and a search processing unit 16. Here, the index database 11 is a query word that has received an input, an index word consisting of a related word registered in the related word database 12 in association with the query word, and identification information (hereinafter referred to as a search). (Target information ID) is stored in association with each other. Further, the related word database 12 stores a vocabulary table that is a list of query words and a related word dictionary that associates the query words with related words that are words related to the query words. In the present embodiment, the search target information database 13 stores the search target information data and the search target information ID in association with each other. The search target information includes a web page, music data, program information, and the like. In the present embodiment, the search target information is described as program information.

  Further, in the search engine 1, the search reception unit 14 receives a search start instruction, an input of a query word, and the like from the search result utilization device 2 and outputs search result information to the search result utilization device 2. Do. The index word specifying unit 15 performs processing for specifying the input query word and reading the related word, which is a word related to the query word, from the related word database 12. Further, the search processing unit 16 performs a search process for searching program information (search target information) to be provided to the user from program information stored in the search target information database 13 based on index words including query words and related words. At the same time, a process is performed for generating search result information storing index words composed of query words and related words, data of search target information extracted as search results, and the matching degree of each search target information with respect to the index word.

  The search result utilization device 2 is, for example, a recording device held by a user, and includes an input / output unit 21, a search result output unit 22, a usage frequency storage unit 23, and a usage frequency recording unit 24. Here, the input / output unit 21 performs a process of receiving an input of a query word from a user and receiving search result information from the search engine 1 connected via a communication network. The search result output unit 22 outputs program information specified from a plurality of pieces of search target information (program information in the present embodiment) included in the search result information based on an instruction from the user or the like. Alternatively, the program information is automatically specified and output from a plurality of pieces of search target information included in the search result information without receiving an instruction from the user. Further, the usage frequency recording unit 24 performs a recording process of the usage frequency related to the index word included in the search target information instructed by the user's output instruction or usage. The usage frequency storage unit 23 stores the usage frequency registered by the usage frequency recording unit 24 for each index word. Here, the use frequency of the index word is used for processing in which the search result output unit 22 specifies and automatically outputs information from a plurality of pieces of search target information included in the search result information. In other words, the usage frequency represents a user's favorite index word by a numerical value.

  In the search system, the search engine 1 performs a search based on a search start instruction, generates search result information, and transmits the search result information to the search result utilization device 2. In the search result utilization device 2, the index word (inquiry word and its relation) used for the search processing of the search target information that received the output instruction and the use instruction among the plurality of search target information extracted as a result of the search. The usage frequency is calculated for each word) and recorded in the usage frequency storage unit 23. Then, based on an instruction from the user or a certain automatically calculated timing, it is determined that the automatic search process is to be performed. After that, when the search result information is received from the search engine 1, it is included in the search result information. The frequency of use of index words related to a plurality of pieces of search target information is read, and processing for changing the recommendation order such as the degree of suitability of the plurality of pieces of search target information is performed. Then, based on the change in the recommendation order, processing for subsequent search results such as output is performed.

FIG. 2 is a diagram showing data stored in the index database.
As shown in this figure, in the index database 11, a word included in the search target information and a search target information ID for identifying the search target information are recorded in association with each other. The search target information including each word of the index word such as the query word and the related word is searched.

FIG. 3 is a diagram showing data of a related word dictionary stored in the related word database.
As shown in this figure, in the related word dictionary stored in the related word database 12, the correspondence between the query word and related words related to the query word (for example, words representing the high-order concept and low-order concept of the query word). Are registered, the related words associated with the query word are read out, and the search process is performed based on the index word composed of the query word and the related word.

FIG. 4 is a diagram showing data stored in the search target information database.
As shown in this figure, in the search target information database 13, the identification information (search target information ID) of the search target information and the data of the search target information specified by the identification information are registered in association with each other. When generating the search result information, the data of the search target information stored in this database is read and stored in the search result information.

FIG. 5 is a diagram showing data stored in the search result information.
As shown in this figure, the search result information generated by the search processing unit 16 stores data related to one or more pieces of search target information extracted by the search process. For example, as shown in FIG. The target information ID, the data of the search target information, the index word made up of the query word or related word used for the search process, the appearance rate of the index word in the search target information, the calculated fitness, and the like are stored. In general, the related term is information that is not transmitted to the user side, and is information that is used only on the search engine side in order to improve the accuracy of the search result.

FIG. 6 is a diagram showing data stored in the usage frequency storage unit.
As shown in this figure, in the usage frequency storage unit 23, an index word (one or a plurality of words including an inquiry word and a related word) and a numerical value of the usage frequency are registered in association with each other. The usage frequency is accumulated for each index word related to the search target information in the search result information given the output instruction by the user or the like.

FIG. 7 is a first diagram showing a processing flow of the search processing system.
Next, the processing flow of the search system will be described.
First, the search reception unit 14 of the search engine 1 receives an input of a query word (step S101). This query word may be received from the search result utilization apparatus 2 via a communication network, or may be directly input to the search engine 1 by a keyboard or the like. Then, the search receiving unit 14 outputs the received query word to the index word specifying unit 15. When receiving the query word, the index word specifying unit 15 reads the related word registered in the related word database 12 in association with the query word (step S102). Then, the index word specifying unit 15 outputs to the search processing unit 16 each index word composed of the query word that has received the input and the related word read based on the query word. In addition, when the search reception unit 14 receives a sentence, the index word specifying unit 15 extracts a word by performing a morphological analysis on the sentence and specifies the extracted word as a query word. You may make it perform.

  Next, the search processing unit 16 reads one or a plurality of search target information IDs registered in the index database 11 in association with each index word composed of a query word or a related word (step S103). Then, the read search target information ID is extracted as a search result (step S104). Next, the search processing unit 16 reads from the search target information database 13 the data of the search target information identified by the extracted one or more search target information IDs. In addition, the search processing unit 16 calculates the degree of matching according to the frequency of the index word used for searching the search target information appearing in the search target information. As a simple process, for example, a cosine of a search target information vector whose element is the number of occurrences in the search target information of an index word (query word and related word) and an index word vector obtained by synthesizing each basic vector of the index word A scale or inner product may be calculated as the similarity, and this similarity may be used as the value of the fitness. Then, for each search target information ID extracted as a search result, the search processing unit 16 searches for the data of the search target information and the search target information indicated by the search target information ID. Search result information (FIG. 5) in which each word consisting of words), the appearance rate of the index word in the search target information, and the matching degree indicating the degree of matching of the search target information with the index word are stored in association with each other. Generate (step S105). And the search reception part 14 transmits the search result information which the search process part 16 produced | generated to the search result utilization apparatus 2 connected via the communication network (step S106).

  Next, the search result utilization apparatus 2 receives the search result information (step S107). Then, the input / output unit 21 outputs the received search result information to the search result output unit 22. Then, the search result output unit 22 outputs search result information (step S108). The search result output unit 22 may output the search result information on the display screen, or store the search result information in a database or the like, and display the search result information on the display screen based on an instruction from the user or the like at a later date. May be output. Or you may make it output to the process part which performs another process inside an apparatus, without displaying especially. When the search result information is output to the display screen, one or more pieces of search target information stored in the search result information are displayed in the order of their suitability.

  Then, an instruction to output one search target information (or one or more search target information stored in the search result information) according to an instruction from the user or another processing unit in the own device (or the like) The search result output unit 22 receives an input of (use instruction) (step S109). Then, the search result output unit 22 reads the data of the search target information instructed to be output from the search result information and outputs it (step S110). This output destination may be a display screen or another processing unit.

  Here, when the search result output unit 22 outputs one search target information among one or a plurality of search target information stored in the search result information, the search engine 1 executes the search target information. The index word (each word consisting of the query word and its related words) used for the search is read from the search result information (step S111). Then, the index word is output to the usage frequency storage unit 24. When receiving the index word from the search result output unit 22, the usage frequency storage unit 24 adds “1” to the usage frequency associated with the index word and recorded in the usage frequency storage unit 23 (step S112). The amount of usage frequency to be added may be another quantity. If the index word received from the search result output unit 22 is not stored in the usage frequency storage unit 23, the index word is associated with the information of the usage frequency “1” and newly registered in the usage frequency storage unit 23. do it.

  Then, by repeating the processing as described above, the value of the usage frequency of the index word registered in the usage frequency storage unit 23 is increased. And when there is an automatic output instruction of search target information from some timing, for example, from the user, when the usage frequency value for the index word exceeds a specified value, when a certain set time has passed, After that, when an automatic output instruction is received by, for example, the search result output unit 22 selects an index word related to the search target information from one or a plurality of search target information stored in the search result information. The process of specifying one search target information and automatically outputting it is started according to the similarity calculated based on the frequency of use and the appearance rate of index words included in the search target information. The automatic output of the search target information may be canceled based on a user instruction.

FIG. 8 is a second diagram showing the processing flow of the search processing system.
Next, a process flow when the search result utilization apparatus 2 starts the automatic output process of the search target information will be described.
First, the search result output unit 22 detects the start of automatic output processing of search target information (step S201). After that, when the search result information is received from the search engine 1 (step S202), the search result output unit 22 reads the index word of each of the one or more search target information stored in the search result information (step S202). S203). For each search target information, the usage frequency of the index word related to the search target information is read from the usage frequency storage unit 23, and the number of occurrences of the index word (query word and related word) in the search target information is used as an element. A cosine measure or inner product of the vector and a vector whose element is the number of times the index word is recorded in the index word usage history part (not shown) is calculated as the similarity (step S204). And the recommendation order of each search object information contained in search result information is determined in order with the high similarity of the index word for every search object information (step S205). Then, the search result output unit 22 automatically outputs the search target information with the highest recommendation order (step S206). This output destination may be a display screen or another processing unit.

FIG. 9 is a diagram showing the data after changing the rank of the search result information.
When automatically outputting one or more pieces of search target information stored in the search result information, the search result output unit 22 is based on the similarity calculated for each search target information as described above. The recommended order may be determined, data as shown in FIG. 9 may be generated, each search target information in the recommended order may be stored in a memory or the like, and used for subsequent automatic output processing.

  Here, when the search target information is program information, the program information with the highest recommendation rank among the plurality of program information stored in the search result information is output to the display screen or determined as the recording target. It is used for processing stored in memory. When it is finally output on the screen or when it is detected that the recording has been performed, it is regarded as a result that has been used by the user, that is, satisfied, and is used for searching the output search result information (program information). The usage frequency of the index word thus updated is updated again in the usage frequency storage unit 23.

  In the present embodiment, an example in which each of the above processes is processed by the search engine 1 and the search result utilization apparatus 2 has been described. However, the above process is performed only by the search engine 1 (search apparatus). You may do it. In that case, the search engine 1 outputs the search target information output by the search result output unit 22 for each user. That is, it is only necessary to output to different output destinations (for example, monitors) for each user.

(Second Embodiment)
FIG. 10 is a block diagram showing the configuration of the search system according to the second embodiment.
Next, an example in which the processing described in the first embodiment is performed only by the search engine 1 (search device) will be described with reference to FIG. In this figure, reference numeral 1 denotes a search engine (search device) that performs a search process based on an inquiry word. The search engine 1 includes an index database 11, a related term database 12, a search target information database 13, a search receiving unit 14, an index word specifying unit 15, a search processing unit 16, a search result output unit 17, a usage frequency recording unit 18, a usage frequency. Each database and processing unit of the storage database 19 are provided. And such a search engine 1 performs the process similar to the corresponding process part in 1st Embodiment.

  Specifically, the processes from step S101 to S105 are the same as those in the first embodiment. Then, the search result output unit 17 outputs it to the display unit or the like. Further, the search result output unit inputs an output instruction (or usage instruction) of one search target information among one or a plurality of search target information stored in the search result information according to a user instruction. 17 accepts. Then, the search result output unit 17 reads the data of the search target information instructed to output from the search result information and outputs it.

  In addition, when the search result output unit 17 outputs one piece of search target information from one or a plurality of pieces of search target information stored in the search result information, the search engine 1 uses the search result information. An index word (each word consisting of a query word and its related words) used for the search is read from the search result information. Then, the index word is output to the usage frequency storage unit 18. When receiving the index word from the search result output unit 17, the usage frequency storage unit 18 adds “1” to the usage frequency recorded in the usage frequency database 19 in association with the index word.

(Third embodiment)
FIG. 11 is a block diagram showing a configuration of a search system according to the third embodiment.
Next, an example in which the process of the usage frequency recording unit 24 in the process of the first embodiment is performed by the search engine 1 will be described with reference to FIG. In this figure, reference numeral 1 denotes a search engine (search device) that performs a search process based on an inquiry word. The search engine 1 includes an index database 11, a related term database 12, a search target information database 13, a search receiving unit 14, an index word specifying unit 15, a search processing unit 16, a search result output unit 17, a usage frequency recording unit 18, a usage frequency. Each database and processing unit of the storage database 19 are provided. And such a search engine 1 performs the same process as the corresponding process part in 1st Embodiment.

  The search result utilization device 2 includes an input / output unit 21, a search result output unit 22, and a utilization result transmission unit 25. Here, the input / output unit 21 performs a process of receiving input of a query word from a user and receiving search result information from the search engine 1 connected via a communication network. Further, the search result output unit 22 displays program information specified from a plurality of pieces of search target information (program information in the present embodiment) included in the search result information based on an instruction from the user or the like. Or a process of automatically specifying and outputting program information from a plurality of search target information included in the search result information without receiving an instruction from the user. The use result output unit 22 performs processing for notifying the search engine 1 of search target information such as program information designated by the user.

  The processing flow of the search processing system in the third embodiment is specifically the same as that in the first embodiment up to the processing in steps S101 to S110. And the search result information which the utilization result transmission part 25 output to the display part is notified to the search engine 1. FIG. Then, the search result output unit 17 of the search engine 1 transmits to the search result utilization device 2 the index word (each word consisting of the query word and its related word) used to search the notified search target information. Read from the search result information. Then, the index word is output to the usage frequency storage unit 18. When receiving the index word from the search result output unit 17, the usage frequency storage unit 18 adds “1” to the usage frequency recorded in the usage frequency database 19 in association with the index word. The amount of usage frequency to be added may be another quantity. If the index word received from the search result output unit 17 is not stored in the usage frequency database 19, the index word and the information of the usage frequency “1” are associated with each other and newly registered in the usage frequency database 19. Good.

  Further, when the search result output unit 17 of the search engine 1 detects the start of the automatic output process of the search target information, the search result information is stored in the search result information device 2 when it is transmitted to the search result utilization device 2 thereafter. The index word of each of the one or more pieces of search target information being read is read. Then, for each search target information, the usage frequency of the index word related to the search target information is read from the usage frequency database 19 and the number of occurrences of the index word (query word and related word) in the search target information is a vector Then, the cosine scale or inner product of the index word and a vector having the number of uses recorded in the index word use history part (not shown) as an element is calculated as the similarity. And the recommendation order of each search object information contained in search result information is determined in order with the high similarity of the index word for every search object information. Then, the search result output unit 17 automatically transmits the search target information with the highest recommendation order to the search result utilization device 2. The search result utilization apparatus 2 displays the received search target information on a display screen or the like.

  As described above, the embodiment of the present invention has been described. However, according to the above-described processing, the index word (from the query word and its related word) used for searching the search result information instructed to be output by the user or the like in the search result utilization device. Information on the frequency of use) is accumulated, and the index word used for searching the search target information among the plurality of search target information stored in the search result information later is stored. The one with high similarity (recommended ranking) calculated by the vector obtained based on the frequency of appearance in the search target information and the vector obtained based on the usage frequency of each already stored search word is selected during automatic output. Is done. In addition, when it is detected that the search target information has been used after being automatically output, the information on the frequency of use of the index word used for searching the search target information is updated. Therefore, before or after the automatic output, the index word related to the search target information used by the user is frequently used, and the direction of the vector obtained based on the use frequency of the index word Since the search target information and the search result from which the vector close to the length can be obtained are automatically specified, the search target information expected by the user can be automatically output.

  Each of the search engines and search result utilization devices described above has a computer system inside. Each process described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing the program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

It is a block diagram which shows the structure of the search system by 1st Embodiment. It is a figure which shows the data which an index database memorize | stores. It is a figure which shows the data which a related term database memorize | stores. It is a figure which shows the data which a search object information database memorize | stores. It is a figure which shows the data stored in search result information. It is a figure which shows the data which a usage frequency memory | storage part memorize | stores. It is a 1st figure which shows the processing flow of a search processing system. It is a 2nd figure which shows the processing flow of a search processing system. It is a figure which shows the data after the order change of search result information. It is a block diagram which shows the structure of the search system by 2nd Embodiment. It is a block diagram which shows the structure of the search system by 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Search engine 2 ... Search result utilization apparatus 11 ... Index database 12 ... Related word database 13 ... Search object information database 14 ... Search reception part 15 ... Index word specific | specification part DESCRIPTION OF SYMBOLS 16 ... Search processing part 17, 22 ... Search result output part 18, 24 ... Usage frequency recording part 19 ... Usage frequency database 21 ... Input / output part 23 ... Usage frequency memory | storage part 25 ... Use result transmitter

Claims (13)

Based on an input of a query word, a search device that searches the database for search target information that holds the query word or a related word recorded in association with the query word,
For each of the plurality of search target information extracted as a result of the search, a plurality of search target information extracted as a result of the search, and an index word composed of the query word and the related word used for the search of the plurality of search target information Search result information generating means for generating the stored search result information;
Of the plurality of search target information extracted as a result of the search, a usage frequency recording unit that records a usage frequency of the index word for searching the search target information that has received an output instruction in a usage frequency storage unit;
A search device comprising: Based on the frequency of use of the index word, recommended rank changing means for changing the recommended rank of a plurality of search target information extracted as a result of the search;
The search device according to claim 1, further comprising: The recommended order changing means is:
Calculating the similarity between one or a plurality of the index words included in the search target information extracted as a result of the search and the usage frequency of the index words recorded in the index word usage frequency recording means;
The search apparatus according to claim 2, wherein a recommendation order of a plurality of pieces of search target information extracted as a result of the search is changed according to the level of the similarity. Based on the recommended order, among the plurality of search target information extracted as a result of the search, automatic output means for determining to output higher-order search target information;
The search device according to claim 2, further comprising: The usage frequency recording means accepts a notification of search target information output from another device among a plurality of search target information extracted as a result of the search, so that the index word for search of the search target information is received. The search device according to claim 1, wherein the use frequency is recorded in a use frequency storage unit. Based on the input of the query word, a search device that searches the database for search target information that holds the query word or related words recorded in association with the query word, and receives information on the search result A search system comprising a search result utilization device,
The search device is
For each of the plurality of search target information extracted as a result of the search, a plurality of search target information extracted as a result of the search, and an index word composed of the query word and the related word used for the search of the plurality of search target information Search result information generating means for generating the stored search result information;
Search result output means for outputting the search result information to the search result utilization device,
The search result utilization device is
Usage frequency recording means for recording, in a usage frequency storage unit, a usage frequency of the index word for search of the search target information that has received an output instruction among the plurality of search target information extracted as a result of the search. A search system characterized by that. The search result utilization device is
The search system according to claim 6, further comprising: a recommendation rank changing unit that changes a recommendation rank of a plurality of pieces of search target information extracted as a result of the search based on the usage frequency of the index word. The recommended order changing means is:
Calculating the similarity between one or a plurality of the index words included in the search target information extracted as a result of the search and the usage frequency of the index words recorded in the index word usage frequency recording means;
The search system according to claim 7, wherein a recommendation order of a plurality of pieces of search target information extracted as a result of the search is changed according to the level of the similarity. The search result utilization device is
Based on the recommended order, among the plurality of search target information extracted as a result of the search, automatic output means for determining to output higher-order search target information;
The search system according to claim 7 or 8, further comprising: Based on an input of a query word, a search method in a search device that searches the database for search target information that holds the query word or related words recorded in association with the query word,
For each of the plurality of search target information extracted as a result of the search, a plurality of search target information extracted as a result of the search, and an index word composed of the query word and the related word used for the search of the plurality of search target information Generate retained search result information,
Of the plurality of search target information extracted as a result of the search, the usage frequency of the index word for searching the search target information that has received an output instruction is recorded in the usage frequency storage unit,
A recommendation method of changing a plurality of search target information extracted as a result of the search based on a frequency of use of the index word. Based on the input of the query word, a search device that searches the database for search target information that holds the query word or related words recorded in association with the query word, and receives information on the search result A search method in a search system comprising a search result utilization device,
The search device extracts a plurality of search target information extracted as a result of search, and a plurality of index words composed of the query word and the related word used for searching the search target information as a result of the search. Generate search result information for each search target information,
The search device outputs the search result information to the search result utilization device,
The search result utilization device records, in the utilization frequency storage unit, the use frequency for the index word for search of the search target information that has received an output instruction among the plurality of search target information extracted as a result of the search,
The search method, wherein the search result utilization device changes a recommendation order of a plurality of pieces of search target information extracted as a result of the search based on a use frequency of the index word. Based on the input of the query word, a computer of a search device that searches the database for search target information that holds the query word or a related word recorded in association with the query word,
For each of the plurality of search target information extracted as a result of the search, a plurality of search target information extracted as a result of the search, and an index word composed of the query word and the related word used for the search of the plurality of search target information Search result information generating means for generating stored search result information;
Of the plurality of search target information extracted as a result of the search, a usage frequency recording unit that records a usage frequency of the index word for searching the search target information that has received an output instruction in a usage frequency storage unit;
A recommended rank changing means for changing a recommended rank of a plurality of pieces of search target information extracted as a result of the search based on the frequency of use of the index word;
Program to function as.   The computer-readable recording medium which recorded the program of Claim 12.

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