JP6779045B2 - Query extractor, search system, ad delivery system, query extraction method, and query extraction program - Google Patents

Description

The present invention relates to a query extraction device, a search system, an advertisement distribution system, a query extraction method, and a query extraction program.

In a search service that provides search results based on a search query, a service that extracts queries related to the search query is provided as an accompanying service. For example, when a server device that provides a search service receives a search query from a terminal device, it extracts a search query related to the received search query and provides the search query to the terminal device as a related query. The related query may be presented to the user on the terminal device as a candidate for a more detailed search query. In connection with this, there is known a technique for extracting a search intention of a user who is not directly expressed in the search query by extracting a search query related to each of a plurality of search queries (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-11486

However, in the technique described in Patent Document 1 described above, when a search query is received, a search query that has been AND-searched with the search query is extracted, so that a search that has never been AND-searched in the past is extracted. You cannot extract the query. As a result, it may not be possible to extract various search queries.

The present invention has been made in consideration of such circumstances, and is a query extraction device capable of extracting a wider variety of search queries when extracting a search query that is strongly related to the input search query. One of the purposes is to provide a search system, an advertisement distribution system, a query extraction method, and a query extraction program.

One aspect of the present invention is an acquisition unit that acquires a log of a search query received by a search service that performs a search via a network, a reception unit that accepts an input of a first search query, and the acquisition unit. Based on the search query log, from the search queries included in the search query log, the second search showing the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query in the search service. It is a query extraction device including an extraction unit for extracting a query.

According to one aspect of the present invention, when extracting a search query that is strongly related to the input search query, a wider variety of search queries can be extracted.

It is a figure which shows an example of the system structure of the query extraction system 1 and the internal structure of a search server 200 in 1st Embodiment. It is a figure which shows an example of the information stored in the search log database 300A. It is a block diagram which shows an example of the internal structure of the query extraction apparatus 400. It is a sequence diagram which shows the overall flow of extracting a related query. It is a figure which shows an example of the search query setting image 500A displayed on the management terminal 500. It is a figure which shows the related query extracted by the search query, the target data condition, and the additional condition. It is a figure which shows an example of the whole structure of the search system 1A and the flow of information in 2nd Embodiment. It is a flowchart which shows an example of the flow of the process which generates the related query in the search system 1A of the 2nd Embodiment. It is a flowchart which shows an example of the flow of the process which provides the related query in the search system 1A of the 2nd Embodiment. It is a figure which shows an example of the whole structure of the advertisement distribution system 1B and the flow of information in 3rd Embodiment. It is a figure which shows the modification of embodiment. It is a figure which shows the hardware configuration of the query extraction apparatus 400.

Hereinafter, embodiments of the query extraction device, search system, advertisement distribution system, query extraction method, and query extraction program of the present invention will be described with reference to the drawings. For example, in a search service provided via a network, the change in the number of search queries received by the search server from the terminal device varies depending on the search query, but it depends on factors such as the content of the search query, the season, the event, and the day of the week. It may be a characteristic change. From this point of view, the query extraction device of the embodiment extracts search queries that have a correlation between changes in the number of receptions as search queries that are related to each other. This makes it possible to extract a wider variety of search queries when extracting search queries that are strongly related to the entered search query. The query extraction device of the embodiment is, for example, by executing a tool (program) that extracts a series of search queries that correlate with the transition of the number of receptions, as one method of analyzing the search queries received by the search server. It can be realized.

<First Embodiment>
[Overall system configuration]
FIG. 1 is a diagram showing an example of the system configuration of the query extraction system 1 and the internal configuration of the search server 200 according to the first embodiment. The query extraction system 1 includes, for example, one or more terminal devices 100, a search server 200, a search log database (DB (DataBase)) server 300, a query extraction device 400, and a management terminal 500. In the example of FIG. 1, one or more terminal devices 100, a search server 200, a search log database server 300, and a query extraction device 400 are connected to a network NW. Further, in FIG. 1, the query extraction device 400 and the management terminal 500 are shown to be connected via a network different from the network NW, but they may be connected via the network NW.

Some or all of the components included in the search server 200 and the search log database server 300 may be integrated into one device. Further, some or all of the components included in the query extraction device 400 and the management terminal 500 may be integrated into one device. Each device connected to the network NW has a communication interface such as a NIC (Network Interface Card) or a wireless communication module (not shown in FIG. 1). The network NW includes, for example, a radio base station, a Wi-Fi access point, a communication line, a provider, the Internet, and the like. It should be noted that not all combinations of these components need to be able to communicate with each other, and the network NW may include a local network in part.

The terminal device 100 is a device used by a user (general user). The terminal device 100 is, for example, a computer device (communication device) such as a mobile phone such as a smartphone, a tablet terminal, or a personal computer. The terminal device 100 transmits an HTTP (Hypertext Transfer Protocol) request including a search query to the search server 200 when a UA (User Agent) such as a web browser is activated and a predetermined operation is performed by the user. Then, the terminal device 100 generates a web screen based on the web page including the search result returned from the search server 200, and displays it on the display unit. An arbitrary application program may be used instead of the web browser as a means for acquiring the image.

The search server 200 provides a search service that responds to a search result in response to receiving a search query. The search server 200 includes, for example, a query reception unit 202, a search unit 204, and a log recording unit 206. These components are realized, for example, by a processor such as a CPU (Central Processing Unit) executing a program stored in a storage unit (not shown) or the like. Further, these components may be realized by hardware (circuit unit; circuitry) such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or software. And may be realized by the cooperation of hardware. The search server 200 receives a search query received from the terminal device 100 by the query receiving unit 202. The search server 200 performs a search on the network by the search unit 204 based on the received search query. The search server 200 returns a web page including the search result to the terminal device 100. Further, the search server 200 stores the log of the search query in the search log database server 300 by the log recording unit 206.

The search log database server 300 is realized by, for example, an HDD (Hard Disk Drive), a flash memory, a RAM (Random Access Memory), a ROM (Read Only Memory), or a hybrid storage device in which a plurality of these is combined. FIG. 2 is a diagram showing an example of information stored in the search log database 300A. The information stored in the search log database 300A includes, for example, information indicating the type of search processing and the date and time when the search query was received by the search server 200 with respect to the information indicating the search query received by the search server 200. It is the associated information. The search query is character information such as a keyword, URL, information for causing the search server 200 such as a search domain to process.

FIG. 3 is a block diagram showing an example of the internal configuration of the query extraction device 400. The query extraction device 400 includes, for example, a log acquisition unit 402, a transition calculation unit 404, a correlation calculation unit 406, and a response unit 408. These components are realized, for example, by a processor such as a CPU executing a program stored in a storage unit or the like. Further, these components may be realized by hardware such as LSI, ASIC, and FPGA, or may be realized by collaboration between software and hardware.

The log acquisition unit 402 acquires at least information indicating the search query and the date and time from the search log database 300A stored in the search log database server 300 as a log of the search query, the search query, the type of search, and the date and time.

The transition calculation unit 404 calculates the transition of the number of received search queries based on the information acquired by the log acquisition unit 402. The transition of the number of received search queries is, for example, information indicating the number of times a search query has been received in a predetermined sampling period. The predetermined sampling period is, for example, one day, but is not limited to this, and may be one week, several hours, or several tens of minutes.

The correlation calculation unit 406 calculates the correlation between the transitions of the number of received search queries calculated by the transition calculation unit 404, for example, by performing the calculation according to the following equation (1). In the formula (1), r is the accepted number of the correlation coefficients, x _i is one of the search query, y _i is the number of acceptances of other search queries. The x-bar (with a horizontal line above x) is the average value of the number of received search queries in one sampling period during a predetermined sampling period, and the y-bar (with a horizontal line above y) is the other. This is the average value of the number of search queries received during a predetermined sampling period.

The response unit 408 transmits information including a related query (second search query) to the search query to the search server 200 in response to the request including the search query (first search query) received from the management terminal 500. The related query is a search query that shows the transition of the number of receptions that correlates with the transition of the number of receptions of the search query included in the request among the search queries included in the search log database 300A.

The management terminal 500 is a device used by the administrator of the query extraction device 400. The management terminal 500 is, for example, a computer device (communication device) such as a personal computer, a tablet terminal, or a mobile phone such as a smartphone. The management terminal 500 transmits a request including a search query to the query extraction device 400 based on the operation of the administrator, and receives information including the related query from the query extraction device 400.

[sequence]
Hereinafter, the overall communication and processing flow executed in the query extraction system 1 shown in FIG. 1 will be described. FIG. 4 is a sequence diagram showing the overall flow of extracting related queries. First, the terminal device 100 transmits an HTTP request including a search query to the search server 200 (S1). The search server 200 transmits a web page including the search result for the search query included in the HTTP request to the terminal device 100 (S2). Further, the search server 200 transmits information including the search query and the reception date and time of the search query to the search log database server 300 (S3). As a result, the search log database server 300 stores the search query and the reception date and time of the search query in the search log database 300A (S4).

Next, the management terminal 500 transmits a request including a search query to the query extraction device 400 (S5). Next, the query extraction device 400 acquires the log of the search query included in the request and the log of other search queries (S6). The query extraction device 400 extracts a related query indicating a transition of the number of receptions that correlates with the transition of the number of receptions of the search query included in the request from the search queries included in the log of the search query (S7). Next, the query extraction device 400 transmits the related query to the management terminal 500 (S8).

[Settings such as search queries and extraction of related queries]
Hereinafter, the search server 200 will describe a setting process such as a search query that can be specified to acquire a related query, and a process that extracts a related query based on the search query specified by the management terminal 500. FIG. 5 is a diagram showing an example of the search query setting image 500A displayed on the management terminal 500. The search query setting image 500A includes a search query input frame 510, a target data condition input frame 512, an additional condition input frame 514, an enter button 516, a search query transition waveform 520, and a list of related queries. Includes 530 and. The target data is a search query other than the search query included in the request in the search query log.

A search query to be included in the request is specified in the search query input box 510. The search query included in the request is, for example, textual information, a search domain, information location information, or information that changes over time. The location information of the information is reference information such as a URL. The information that changes in time series is, for example, sample data that rises by 1 in several weeks, sample data that rises on weekdays, and the like. In addition, search query conditions are specified in the search query input frame 510. The condition of the search query is, for example, the type of search process in which the search query was searched. The type of search process is web search or vertical search (either image, video, map, or news, Yahoo! Answers, etc.).

The condition of the target data is specified in the input frame 512 of the condition of the target data. The condition of the target data is, for example, the type of search process in which the search query is searched in the search service. The type of search process is web search or vertical search (either images, videos, maps, or news).

In the input frame 514 of the additional condition, an additional condition for acquiring the related query is specified. Additional conditions for acquiring related queries are included in the conditions to be excluded from related queries (hereinafter referred to as exclusion conditions for search processing), the conditions for narrowing down related queries (hereinafter referred to as narrowing conditions), and requests. Information that specifies a period for smoothing the transition of the number of received search queries, or information that specifies a period for shifting the transition of the number of accepted search queries included in the request. The additional condition may be other than these, for example, a sampling period. For example, a long sampling period may be specified for a search query with a long fluctuation cycle in the number of receptions such as an event once every few years, and a sampling period of several hours for a search query in which the number of receptions fluctuates greatly at night. You may specify it.

The decision button 516 is selected with at least the search query and the target data condition included in the request specified. In the example of FIG. 5, the enter button 516 is an exclusion condition that, for example, the search query included in the request is "web search, typhoon", the target data condition is "web search", and the additional condition is "excluding" typhoon "". Is selected in the specified state.

The management terminal 500 responds to the selection of the enter button 516 by "web search, typhoon" as a search query, "web search" as a target data condition, and "excluding" typhoon "as an additional condition". A request including is sent to the query extraction device 400. "Web search" as a target data condition is an example of information that specifies the type of search processing. "Excluding" typhoon "" as an additional condition is an example of the exclusion condition.

The query extraction device 400 acquires information indicating the transition of the number of received search queries for which "typhoon" is specified in the web search, and responds to the management terminal 500. Further, the query extraction device 400 calculates the correlation between the transition of the number of received search queries for which "typhoon" is specified in the web search and the transition of the number of received search queries searched on the web in the search query log. , Get a predetermined number of highly correlated related queries. Further, the query extraction device 400 excludes queries including "typhoon" as character information from the acquired related queries, extracts search queries that do not meet the exclusion conditions as related queries, and responds to the management terminal 500. As a result, the management terminal 500 displays the transition waveform 520 of the search query and the related query list 530.

[Extraction result of related query]
FIG. 6 is a diagram showing related queries extracted by the search query, the target data condition, and the additional condition.

When "heater" is specified in the web search as the search query, "web search" is specified as the target data condition, and "niche query" is specified as the additional condition, the query extraction device 400 performs a search query in which the number of receptions is less than or equal to a predetermined value. Extract from the search log database 300A. Then, the query extraction device 400 extracts, among the extracted search queries, a search query having a correlation with the transition of the number of "heaters" received in the web search as a related query.

The query extraction device 400 uses the search query included in the request when "rental" is specified in the web search as the search query, "web search" is specified as the target data condition, and "smoothing in the last 7 days" is specified as the additional condition. By taking the moving average of the number of receptions in the last 7 days, the transition of the number of receptions and the transition of the number of search queries included in the search query log are smoothed. "Smoothing in the last 7 days" as an additional condition is an example of information that specifies a period for smoothing the transition of the number of received search queries. The query extraction device 400 smoothes each transition by converting the transition of the number of receptions of "rental" and the transition of the number of receptions of the search query searched in the web search into the average value in the specified period. .. The query extraction device 400 extracts a search query indicating a transition of the smoothed number of receptions, which correlates with the transition of the number of smoothed “rental” receptions, as a related query.

When "Halloween" is specified in the web search as the search query and "image search" is specified as the target data condition, the query extraction device 400 is an image search that correlates with the transition of the number of "earthquakes" received in the web search. Extract the query as a related query. In this way, the query extraction device 400 can classify related query categories by designating the type of search processing.

When "earthquake" is specified in the web search as the search query and "search result URL" is specified as the target data condition, the query extraction device 400 changes the number of selections that correlates with the change in the number of "earthquakes" received in the web search. The inflow query for the URL indicating is extracted as a related query. The number of times the URL is selected is, for example, the number of times the URL is clicked by the terminal device 100 and the search server 200 receives the HTTP request. In this way, the query extraction device 400 can collect queries such as notational fluctuations that appear in character information by specifying the number of clicks of the URL, so that noise due to outliers can be suppressed.

The query extraction device 400 searches the web when a narrowing condition such as "Christmas gift" in the web search as a search query, "SSURL" as the target data condition, and "narrow down by" mail order site aaa "" as an additional condition is specified. The search queries for flowing into the URL indicating the transition of the number of selections that correlates with the transition of the number of receptions of "Christmas gifts" are narrowed down to the search queries related to the mail-order site aaa and extracted as related queries. "Squeeze with" mail order site aaa "" is an example of narrowing conditions. The search query related to the mail-order site aaa is, for example, a search query containing the character information of the mail-order site aaa, a search query searched on the mail-order site aaa, or a search searched to display the web page of the mail-order site aaa. It is a query.

The query extraction device 400 is set to "www.tsuhan.co.jp" when "search domain" www.tsuhan.co.jp "" is specified as the search query and "search result domain" is specified as the target data condition. Search result that shows the transition of the number of receptions that correlates with the transition of the number of receptions Search queries for flowing into the domain are extracted as related queries. In this way, the query extraction device 400 can extract related queries with a strong correlation by correlating between domains.

The query extraction device 400 is included in the search query log when information that changes in time series such as "sample data that rises one by one in two weeks" or "sample data that rises on weekdays" is specified as the search query. From the search queries, the search queries that show the transition of the number of receptions that correlate with the changes in the specified time series are extracted as related queries.

When "shift after one day" is specified as an additional condition, the query extraction device 400 shifts the transition of the number of received search queries included in the request by the specified period. As an additional condition, "shift after one day" is an example of information that specifies a period for shifting the transition of the number of received search queries included in the request. The query extraction device 400 extracts as a related query a search query showing a transition that correlates with a transition in which the transition of the number of received search queries included in the request is shifted by a specified period. As a result, the query extraction device 400 can extract, for example, "a typhoon passing", which has a large number of receptions one day after the arrival of a typhoon, as a related query.

When "inverse correlation" is specified as an additional condition, the query extraction device 400 changes the number of receptions of the search query included in the request from the search query included in the log of the search query and the transition of the number of receptions having the opposite correlation. The search query indicating is extracted as a related query. As a result, the query extraction device 400 can extract, for example, a "fishing boat" whose number of receptions is reduced when a typhoon arrives as a related query.

[Effect of the first embodiment]
According to the query extraction device 400 of the first embodiment described above, the log acquisition unit 402 that acquires the log of the search query received by the search service that performs the search via the network NW, and the search server 200 can search for the search query. Based on the search query log acquired by the response unit 408 that accepts the input and the log acquisition unit 402, the number of search queries received in the request in the search service from among the search queries included in the search query log. Since it is provided with a transition calculation unit 404 and a correlation calculation unit 406 that extract related queries that indicate changes in the number of receptions that correlate with the transition of the input search query, it is more diverse when extracting search queries that are strongly related to the input search query. Search queries can be extracted. According to the query extraction device 400, for example, a search query searched at the same time as the search query included in the request can be extracted as a related query from the search query log.

Further, according to the query extraction device 400 of the first embodiment, the related query extracted from the search query log can be adjusted by specifying the additional condition, so that the administrator who wants to acquire the related query intends to do so. A wider variety of related queries can be extracted along the way.

<Second Embodiment>
Hereinafter, the second embodiment will be described. The search system 1A of the second embodiment is the first in that when a search request including a search query is received from the management terminal 500, the management terminal 500 is provided with information including search candidates related to the received search query. It is different from the query extraction system 1 of the embodiment. Hereinafter, this point will be mainly described.

[Overall system configuration]
FIG. 7 is a diagram showing an example of the overall configuration of the search system 1A and the flow of information in the second embodiment. In the search system 1A of the second embodiment, the query extraction device 400A periodically reads, for example, the search log database server 300 from the search log database server 300. The query extraction device 400A extracts a related query for the search query received from the management terminal 500 from the read search query log S10. The query extraction device 400A transmits the table data S11 representing the correspondence between the search query received from the management terminal 500 and the related query to the search server 200A. The search server 200A stores the table data S11 in the internal storage unit.

When the search server 200A receives a search request including the search query S12 from the terminal device 100, the search server 200A refers to the table data S11, acquires a related query associated with the search query S12, and searches for the acquired related query. It is transmitted to the terminal device 100 as a candidate S13. As a result, the search server 200A can display the search candidate S13 on the terminal device 100.

[Related query generation process]
FIG. 8 is a flowchart showing an example of a processing flow for generating a related query in the search system 1A of the second embodiment. The processing of this flowchart is repeatedly executed at predetermined intervals. First, the query extraction device 400A determines whether or not the log acquisition timing has arrived (S100). The log acquisition timing is the timing at which the request is received from the management terminal 500, but is not limited to this, and may be once a day, once a month, or the like. When the query extraction device 400A determines that the log acquisition timing has arrived, it acquires the log S10 of the top N search queries among the search queries included in the search log database 300A (S102). The query extraction device 400A extracts M related queries from the entire search query log S10 for each search query included in the acquired search query log S10 (S104). N is a natural number of 1 or more, for example, 20. Further, M is a natural number of 1 or more, and is a predetermined number of search candidates such as 5. Next, the query extraction device 400A stores the table data S11 including N search queries and M related queries in the search server 200A by transmitting the table data S11 to the search server 200A (S106). If the log acquisition timing has not arrived, the processing of this flowchart ends.

[Proposal of search candidates]
FIG. 9 is a flowchart showing an example of a processing flow for providing a related query in the search system 1A of the second embodiment. The processing of this flowchart is repeatedly executed at predetermined intervals. The search server 200A determines whether or not a search request has been received from the terminal device 100 (S200). When the search server 200A receives the search request, the search server 200A refers to the table data S11 and determines whether or not there is a related query associated with the search query S12 included in the search request (S202). When there is a related query, the search server 200A reads the related query from the table data S11 and transmits the read related query as the search candidate S13 to the terminal device 100 (S204).

If there is no related query, the search server 200A transmits the search query S12 to the query extraction device 400A (S206). The query extraction device 400A extracts a search query indicating a transition of the number of receptions that correlates with the transition of the number of receptions of the search query S12 from the log of the search query, and transmits the search query to the search server 200A. As a result, the search server 200A acquires the related query of the search query S12 (S208). The search server 200A transmits the acquired related query as the search candidate S13 to the terminal device 100 (S204).

[Effect of the second embodiment]
According to the search system 1A of the second embodiment described above, when a search query is received from the terminal device 100, a related query indicating a change in the number of received search queries that correlates with the change in the number of received search queries is queried. Since it is acquired from the extraction device 400A and the related query is transmitted to the terminal device 100 as a search candidate, a wider variety of search candidates can be provided.

<Third Embodiment>
Hereinafter, the third embodiment will be described. The advertisement distribution system 1B of the third embodiment is different from the above-described embodiment in that the advertisement information is provided to the terminal device 100 when the search server 200B receives the search query from the terminal device 100. Hereinafter, this point will be mainly described.

FIG. 10 is a diagram showing an example of the overall configuration and information flow of the advertisement distribution system 1B according to the third embodiment. The advertisement distribution system 1B includes an advertisement distribution device 600 connected to a search server 200B and a query extraction device 400B via a network NW. The advertisement distribution device 600 distributes an advertisement to the search server 200B in response to an advertisement request. The advertisement distribution device 600 includes, for example, an advertisement determination unit 602. The component including the advertisement determination unit 602 is realized by executing a program by a processor such as a CPU, for example. Further, these components may be realized by hardware such as LSI, ASIC, and FPGA, or may be realized by collaboration between software and hardware. The advertisement determination unit 602 determines the advertisement based on the related query.

When the search server 200B receives a search request including the search query S20 from the terminal device 100, the search server 200B transmits the received search query S20 as the search query S21 to the query extraction device 400B. The query extraction device 400B extracts the related query S22 indicating the transition of the number of receptions that correlates with the transition of the number of receptions of the received search query S21 from the log of the search query, and makes the advertisement request including the related query S22 an advertisement distribution device. Send to 600.

When the advertisement distribution device 600 receives the advertisement request, the advertisement determination unit 602 determines whether or not there is advertisement information associated with the related query S22. When there is advertisement information associated with the related query S22, the advertisement distribution device 600 transmits the advertisement information S23 to the search server 200B. When there is no advertisement information associated with the related query S22, the advertisement distribution device 600 transmits other advertisement information to the search server 200B. The search server 200B transmits a web page including the search result set in the advertisement information in the advertisement space to the terminal device 100 as the search result S24.

[Effect of Third Embodiment]
According to the advertisement distribution system 1B of the third embodiment described above, the advertisement distribution device that acquires the related query from the query extraction device 400B and the query extraction device 400B and transmits the advertisement information related to the related query to the terminal device 100. Since it includes 600, it is possible to deliver an advertisement to a wider variety of related queries.

<Modification example>
FIG. 11 is a diagram showing a modified example of the embodiment. In the above-described embodiment, the query extraction device 400 and the management terminal 500 have been described as being connected via a network. However, as shown in FIG. 10, a search query is performed by the management terminal 400C having the function of the query extraction device 400. The process of extracting the related query from the log of is realized.

<Hardware configuration>
FIG. 12 is a diagram showing a hardware configuration of the query extraction device 400. The query extraction device 400 includes NIC400-1, CPU400-2, RAM400-3, ROM400-4, secondary storage devices 400-5 such as flash memory and HDD, and drive device 400-6, which are internal buses or dedicated communication lines. It is configured to be interconnected by. A portable storage medium such as an optical disk is mounted on the drive device 400-6. The program stored in the portable storage medium mounted on the secondary storage device 400-5 or the drive device 400-6 is expanded into the RAM 100-3 by a DMA controller (not shown) or the like, and executed by the CPU 400-2. As a result, each functional unit of the query extraction device 400 is realized.

Although the embodiments for carrying out the present invention have been described above with reference to the embodiments, the present invention is not limited to these embodiments, and various modifications and modifications and variations and variations thereof are made without departing from the gist of the present invention. Substitutions can be added.

In the above-described embodiment, the search server accepts the search query, but the present invention is not limited to this, and a front server separate from the search server for forwarding the search query to the search server may be provided. In this case, the front server does not have to transfer the search query to the search server and the query extractor and extract the search query from the search server to the query extractor.

1 ... Query extraction system, 1A ... Search system, 1B ... Advertisement distribution system, 100 ... Terminal device, 200 ... Search server, 200A ... Search server, 200B ... Search server, 202 ... Query reception unit, 204 ... Search unit, 206 ... Log recording unit, 300 ... Search log database server, 300A ... Search log database, 400 ... Query extraction device, 400A ... Query extraction device, 400B ... Query extraction device, 400C ... Management terminal, 402 ... Log acquisition unit, 404 ... Transition calculation Unit, 406 ... Correlation calculation unit, 408 ... Response unit, 500 ... Management terminal, 600 ... Advertisement distribution device

Claims (17)

An acquisition unit that acquires the log of search queries received by the search service that searches via the network,
The reception department that accepts the input of the first search query and
Based on the search query log acquired by the acquisition unit, among the search queries included in the search query log, the number of receptions that correlates with the transition of the number of receptions of the first search query in the search service. It is equipped with an extraction unit that extracts a second search query that shows the transition of
The reception unit receives information that specifies the type of search processing,
The extraction unit shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query, and the second search is performed on the search query extracted by the type of search processing accepted by the search service. Extract as a query,
Query extractor. An acquisition unit that acquires the log of search queries received by the search service that searches via the network,
The reception department that accepts the input of the first search query and
Based on the search query log acquired by the acquisition unit, among the search queries included in the search query log, the number of receptions that correlates with the transition of the number of receptions of the first search query in the search service. It is equipped with an extraction unit that extracts a second search query that shows the transition of
The reception unit receives information that specifies exclusion conditions for search processing,
The extraction unit indicates a transition of the number of receptions that correlates with the transition of the number of receptions of the first search query, and a search query that does not correspond to the exclusion condition received by the reception unit is used as the second search query. Extract,
Query extractor. The reception unit receives information that specifies narrowing conditions for further narrowing down the second search query extracted by the extraction unit.
The extraction unit outputs the result of narrowing down the second search query under the narrowing conditions received by the reception unit.
The query extraction device according to claim 1 or 2 . The reception unit receives information that specifies a period for smoothing the transition of the number of search queries received.
The extraction unit extracts a search query showing a transition of the number of receptions smoothed in the period, which correlates with the transition of the number of receptions smoothed in the period of the first search query, as the second search query. To do
The query extraction device according to claim 1 or 2 . The reception unit receives information that specifies a period for shifting the transition of the number of search queries received.
The extraction unit extracts, as the second search query, a search query showing a transition that correlates with the transition of the number of receptions of the first search query shifted by the period.
The query extraction device according to claim 1 or 2 . An acquisition unit that acquires the log of search queries received by the search service that searches via the network,
The reception department that accepts the input of the first search query and
Based on the search query log acquired by the acquisition unit, among the search queries included in the search query log, the number of receptions that correlates with the transition of the number of receptions of the first search query in the search service. It is equipped with an extraction unit that extracts a second search query that shows the transition of
The reception unit receives information that specifies a search query in which the number of search queries received is less than or equal to a predetermined value.
The extraction unit obtains a search query showing a transition of the number of receptions among the search queries included in the log of the search query, in which the number of receptions is equal to or less than a predetermined value and has a correlation with the transition of the number of receptions of the first search query. , Extracted as the second search query,
Query extractor. An acquisition unit that acquires the log of search queries received by the search service that searches via the network,
The reception department that accepts the input of the first search query and
Based on the search query log acquired by the acquisition unit, among the search queries included in the search query log, the number of receptions that correlates with the transition of the number of receptions of the first search query in the search service. It is equipped with an extraction unit that extracts a second search query that shows the transition of
When the reception unit receives information that specifies a search query having an inverse correlation with the first search query, the extraction unit shows a transition of the number of receptions having the opposite correlation with the transition of the number of receptions of the first search query. Extract the search query as the second search query,
Query extractor. The query extraction device according to any one of claims 1 to 7 .
When a search query is received from a terminal device, a second search query indicating a change in the number of received search queries that correlates with the change in the number of received search queries is acquired from the query extraction device, and the second search query is obtained as described above. A search server that sends to the terminal device
A search system equipped with. The query extraction device according to any one of claims 1 to 7 .
An advertisement distribution device that acquires the second search query from the query extraction device and distributes advertisement information related to the second search query.
An advertisement distribution system equipped with. The computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query,
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
At the time of accepting, the information that specifies the type of search processing is accepted,
At the time of the extraction, the search query that shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query and is extracted by the type of search processing accepted by the search service is the second. Extract as a search query,
Query extraction method. The computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query,
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
At the time of accepting, the information that specifies the exclusion condition of the search process is accepted,
At the time of the extraction, the search query that shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query and does not correspond to the accepted exclusion condition is extracted as the second search query. ,
Query extraction method. The computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query,
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
At the time of receiving the above, information that specifies a search query in which the number of received search queries is less than or equal to a predetermined value is accepted.
At the time of the extraction, among the search queries included in the log of the search query, the number of receptions is not more than a predetermined value, and the search query shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. Is extracted as the second search query,
Query extraction method. The computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query,
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
When information that specifies a search query that is inversely correlated with the first search query is received at the time of acceptance, the number of receptions that correlates with the transition of the number of receptions of the first search query at the time of extraction is the opposite. The search query showing the transition is extracted as the second search query.
Query extraction method. On the computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
At the time of accepting the above, information specifying the type of search processing is accepted.
At the time of the extraction, the search query that shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query and is extracted by the type of search processing accepted by the search service is the second. Extract as a search query,
Query extractor. On the computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
When accepting the above, the information that specifies the exclusion condition of the search process is accepted.
At the time of the extraction, the search query that shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query and does not correspond to the accepted exclusion condition is extracted as the second search query. ,
Query extractor. On the computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
A search query showing a transition of the number of receptions among the search queries included in the log of the search query when the extraction is performed, in which the number of receptions is equal to or less than a predetermined value and is correlated with the transition of the number of receptions of the first search query. Is extracted as the second search query.
Query extractor. On the computer
Get the log of the search query received by the search service that searches via the network,
Accept the input of the first search query
Based on the acquired search query log, among the search queries included in the search query log, the search service shows the transition of the number of receptions that correlates with the transition of the number of receptions of the first search query. 2 Extract the search query and
When the information specifying the search query having an inverse correlation with the first search query is received at the time of receiving the first search query, the reception having the opposite correlation with the transition of the number of receptions of the first search query at the time of extracting the first search query. A search query showing a change in the number is extracted as the second search query.
Query extractor.

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