JP2012185708A - Information retrieval support device, information retrieval support method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information retrieval support device, an information retrieval support method, and a program which enable a user to search for appropriate information regardless of levels of retrieval technique and retrieval knowledge.SOLUTION: An information retrieval support device 200 supports Web page retrieval using retrieval keywords. The device comprises: an inquiry unit 20 for, when retrieval keywords are input, outputting a question to require its answer; a retrieval expression creation unit 30 for, based on the answer, creating a new retrieval expression by adding a new retrieval keyword or by setting a new retrieval condition or by performing the both for the input retrieval keywords; and an information retrieval unit 40 for performing Web page retrieval based on the retrieval expression.

Description

  The present invention relates to an information search support apparatus, an information search support method, and a program for supporting a user in information search using the Internet.

  In general, the cloud means a data center or a group of servers operated in the data center that provides services to users from the other side of the network. A large amount of information is now stored in the cloud, and in many cases, a user can search for desired information with a single keyword by using an existing Web search service.

  Further, as existing Web services, Web search services provided by vendors such as Google (registered trademark) and Yahoo (registered trademark) are known. In addition, these vendors are continually improving the search speed, richness of information, accuracy, and the like every day in order to acquire a share of search engines.

  For example, Patent Documents 1 to 3 disclose techniques for efficiently performing information retrieval on the Internet. Specifically, Patent Document 1 discloses a technique for performing a search by allowing a user to input a search genre. Patent Document 2 discloses a technique for calculating importance for a search keyword vocabulary and performing a search using the calculated importance. Furthermore, Patent Document 3 discloses a technique for performing a search using a search keyword input by a user and a genre keyword registered in a database.

JP 2004-302773 A JP 2009-129098 A JP 2010-9546 A

  However, even if the search techniques disclosed in Patent Documents 1 to 3 are used, there are cases where a Web page that matches information that the user wants to search cannot be searched, which is a problem. Further, even if a matched Web page is searched, it may not be displayed at the top of the search result, and as a result, a problem that the user cannot notice may occur.

  On the other hand, some vendors offer abundant search options, so if users make effective use of these, it will be possible to search for information that matches their requirements, thus solving the above problems. It is thought that it becomes.

  However, there are currently users who do not know the existence of search options and users who have difficulty understanding the concept of search options. That is, in an environment where more accurate information can be obtained by utilizing the search option, information may be missed due to a searcher's experience in operating a search application, a difference in IT knowledge, and the like.

  As described above, in the conventional Web search service, even if the above problem can be solved by utilizing the search option, another problem that few people can use the search option provided by each vendor occurs. In other words, for users with limited search technology and search knowledge, obtaining target information by Web search and reducing the time and labor required for search are difficult problems to solve. .

  An example of an object of the present invention is to solve the above-described problem and enable a user to search for appropriate information without depending on the level of search technology and search knowledge, an information search support device, an information search support method, And to provide a program.

In order to achieve the above object, an information search support device according to one aspect of the present invention is an information search support device that supports search of a Web page using a search keyword,
When a search keyword is entered, an inquiry part that outputs a question and asks for an answer,
A search expression creation unit that creates a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer;
An information search unit for searching a web page based on the search formula;
It is characterized by having.

In order to achieve the above object, an information search support method according to an aspect of the present invention is a method for supporting search of a Web page using a search keyword,
(A) When a search keyword is input, outputting a question and asking for an answer;
(B) creating a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer; and
(C) searching for a web page based on the search formula; and
It is characterized by having.

Furthermore, in order to achieve the above object, a program according to one aspect of the present invention is a program for supporting a search for a Web page using a search keyword by a computer,
In the computer,
(A) When a search keyword is input, outputting a question and asking for an answer;
(B) creating a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer; and
(C) searching for a web page based on the search formula; and
Is executed.

  As described above, according to the information search support device, the information search support method, and the program of the present invention, the user can search for appropriate information regardless of the level of search technology and search knowledge. be able to.

FIG. 1 is a diagram showing an information search support apparatus and an environment in which it is used in an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the information search support apparatus according to the embodiment of the present invention. FIG. 3 is a flowchart showing the operation of the information search support apparatus in the embodiment of the present invention. FIG. 4 is a diagram illustrating an example of an input screen used in the present embodiment. FIG. 5 is a diagram illustrating an example of a question output for use in the present embodiment. FIG. 6 shows an example of a search result when a search is performed without adding a quotation mark to the left in the embodiment of the present invention. FIG. 7 shows an example of a search result when a search is performed with quotation marks added to the left in the embodiment of the present invention. FIG. 8 is a flowchart showing in detail the information search process shown in FIG. FIG. 9 is a block diagram illustrating an example of a computer that implements the information search support apparatus according to the embodiment of the present invention.

(Embodiment)
Hereinafter, an information search support device, an information search support method, and a program according to an embodiment of the present invention will be described with reference to FIGS.

[Device configuration]
First, the configuration of the information search support apparatus according to the present embodiment will be described with reference to FIGS. FIG. 1 is a diagram showing an information search support apparatus and an environment in which it is used in an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the information search support apparatus according to the embodiment of the present invention.

  As shown in FIG. 1, the computer 110 is connected to the cloud 500 via the Internet. Therefore, in general, the user outputs a search keyword to the search engine 502 on the Internet via the computer 110. Accordingly, the search engine 502 searches for information stored in the distributed data store 501 built in the cloud 500 based on the search keyword. Then, the search engine 502 organizes information collected from the distributed data store 501 and returns the result to the computer 110. The search engine 502 is an existing search engine that has existed conventionally.

  By the way, in this embodiment, the information search support apparatus 200 (see FIG. 2) according to this embodiment is built in the computer 110. For this reason, except for certain cases, instead of the search engine 502, the information search support apparatus 200 functions as a search engine and executes a search.

  As shown in FIG. 2, the information search support apparatus 200 according to the present embodiment supports an inquiry unit 20, a search expression creation unit 30, an information search unit 40, in order to support a search for a Web page using a search keyword. It has. Further, in the present embodiment, as will be described later, it is built in the computer 110 by a program.

  When a search keyword is input from the user via the input device 301, the inquiry unit 20 outputs a question to the output device 300 and obtains an answer. The input device 301 is an input device such as a keyboard and a mouse provided in the computer 110. The output device 300 is a display device such as a liquid crystal display device provided in the computer 110.

  The search expression creation unit 30 creates a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on an answer from the user. To do. The information search unit 40 searches for a web page based on the created search expression.

  As described above, according to the information search support device 200, a user can answer a few questions displayed at the time of a search, and automatically obtain a new information for a search keyword to obtain appropriate information. New search keywords are added and new search conditions are set. Therefore, the user does not need to be aware of the search function and search technology of the search engine. If the approach for searching is the same, an appropriate search result can be obtained by anyone.

  Here, the information search support apparatus 200 in the present embodiment will be described more specifically. As shown in FIG. 2, the information search support apparatus 200 includes a search keyword input unit 10 and a search result display unit 50 in addition to the inquiry unit 20, the search expression creation unit 30, and the information search unit 40. Yes. Furthermore, the information search support device 200 is connected to the communication device 100 and is connected to the cloud 500 on the Internet via the communication device 100.

  The communication device 100 is a device that is connected to the cloud 500 and exchanges information with the cloud 500. In the present embodiment, the communication device 100 is built in the computer 110 by a program, but is not limited to this. The notification device 100 may be realized by hardware and may be connected to the computer 110 by a cable or the like. Further, when receiving information from the cloud 500, the communication device 100 inputs the information to the information search support device 200.

  Further, as described above, in the present embodiment, the information search support device 200 is constructed in the computer 110 by a program. In this case, the program may have a structure that can be added on to a browser for browsing Web information, for example.

  Furthermore, in the present embodiment, the information search support device 200 may be constructed in a server computer on the Internet. In this case, the input device 301 and the output device 300 are provided in another computer connected to the server computer.

  The search keyword input unit 10 receives an input of a search keyword from the input device 301 and inputs the received search keyword to the inquiry unit 20. In addition, when an instruction is received from the inquiry unit 20, the search keyword input unit 10 sends the received search keyword via the communication device 100 on the condition that the communication device 100 can be connected to the cloud 500. , Input to the cloud 500. In this case, a search processing instruction is given to the search engine 502 (see FIG. 1) provided by the cloud 500, and the search engine 502 performs the search processing.

  In the present embodiment, the inquiry unit 20 first lexically analyzes the search keyword (character string) received by the search keyword input unit 10. Then, the search purpose inquiry unit 20 does not use any search option such as ““ OxΔ ”” or “site:” when inputting a search keyword, and only inputs a character string. Determine whether or not.

  As a result of the determination, if the search option is used, it can be determined that the user has a high search capability. Therefore, the inquiry unit 20 causes the search keyword input unit 10 to output a search processing command to the cloud 50.

  On the other hand, if the search option is not used at all as a result of the determination, the inquiry unit 20 outputs a question for extracting highly accurate information to the output device 300. For example, the inquiry unit 20 outputs to the output device 300 a screen that allows the user to select a question representing content close to the user's request. As questions, a question 1 that asks whether or not a planned action is set for the article represented by the search keyword, a question 2 that asks whether detailed information of the article is necessary, And question 3 that asks whether information about the situation being placed is needed.

  When an answer is obtained from the user by the question from the inquiry unit 20, the search formula creation unit 30 adds a new search keyword and sets a new search condition based on the answer. For example, when it is answered that the action is a set action with respect to the question 1, the search formula creation unit 30 adds a search keyword related to the set action to the search keyword.

  In addition, when it is answered that the detailed information of the article is necessary for the question 2, the search formula creation unit 30 determines that the total value of the search keyword hit rate and the information coverage rate is greater than or equal to the threshold for the search keyword. A search condition for searching for a Web page is set. Note that the information coverage rate means the rate at which search keywords are mentioned on a Web page. Specific examples will be described later.

  Further, when the search formula creation unit 30 replies to the question 3 that information on the situation where the article is placed is necessary, the search formula creation unit 30 searches a Web page in a preset field for the search keyword. Set the search condition. In the following explanation, adding a new search keyword to a search keyword and setting a new search condition are collectively described as “determining search parameters for search processing”. There is.

  The information search unit 40 is activated as a search engine and executes a search using the search parameters determined by the search formula creation unit 30. When there is information that the search formula creation unit 30 could not set as a parameter, the information search unit 40 executes a filtering process to which the information that could not be set is added after information search and collection, and finally Abstract information list.

  The search result display unit 50 outputs the search result by the information search unit 40 to the input / output device 300 and displays it. Further, when the search keyword input unit 50 causes the search engine 502 on the cloud 500 to perform a search, the search result display unit 50 outputs the search result to the input / output device 300 and displays it.

[Device operation]
Next, the operation of the information search support apparatus 200 according to the embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a flowchart showing the operation of the information search support apparatus in the embodiment of the present invention. In the following description, FIGS. 1 and 2 are referred to as appropriate. Furthermore, in this embodiment, the information search support method is implemented by operating the information search apparatus 200. Therefore, the description of the information search support method in the present embodiment is replaced with the following description of the operation of the information search support apparatus 200.

(Step A1)
As shown in FIG. 3, first, in the information search support device 200, the search keyword input unit 10 is called, and the search keyword input unit 10 receives a search keyword input from the input device 301 by the user. At this time, the accepted keyword becomes a part of a search keyword for giving a search processing instruction to the search engine 502 or the information search unit 40.

  Specifically, in step A1, an input screen is displayed on the output device 301 as shown in FIG. 4. On the input screen, the user inputs “golf left” as a search keyword and is provided on the input screen. When the “Search” button is pressed, the search keyword input unit 10 receives the search keyword. The search keyword input unit 10 inputs the received search keyword to the inquiry unit 20. FIG. 4 is a diagram illustrating an example of an input screen used in the present embodiment.

(Step A2)
Next, when a search keyword is input from the search keyword input unit 10, the inquiry unit 20 first performs a lexical analysis on the enumeration of input keywords. For the lexical analysis, for example, a tool such as “lex” widely used in UNIX (registered trademark) is used. In the inquiry unit 20, only “golf” and “left” are simply input, and search options (search conditions) such as addition of parentheses (“”) and setting “site:” are not set. Determine if.

(Step A3)
As a result of the determination in step A2, when the two keywords “golf” and “left” are simply input and no search option is used, the inquiry unit 20 outputs as shown in FIG. A question is displayed on the screen of the apparatus 300 and the user is asked. FIG. 5 is a diagram illustrating an example of a question output for use in the present embodiment. In the example of FIG. 5, a question for asking an item that the user attaches importance to in the search is shown by the selection method.

(Step A4)
Next, after executing step A3, the inquiry unit 20 determines whether or not there is a response from the user. As a result of the determination, if there is an answer, that is, after the question shown in FIG. 5 is shown, if the user selects an item that he / she thinks corresponds, the inquiry unit 20 accepts the selection as an answer. Thereafter, the search expression creation unit 30 is called and step A5 is executed. On the other hand, if there is no answer, and if the search option is set as a result of the determination in step A2, step A8 is executed by the search input unit 10.

(Step A8)
The search keyword input unit 10 performs step A8 when the above search option is set for the search keyword, or when the “search” button is pressed without checking any of the items shown in FIG. Execute. That is, in such a case, it is determined that the user's search capability is high, and the information search support device 200 does not call the search formula creation unit 30 and the information search unit 40 and does not call the search keyword input unit 10. The received search keyword is input to the cloud 500 via the communication device 100.

(Step A9)
Thereafter, when the search keyword input unit 10 acquires the search result, the information search support apparatus 200 inputs the search result to the search result display unit 50 as in the normal search. As a result, step A7 is executed, and the search result display unit 50 displays the search result on the screen of the output device 300.

(Step A5)
In step A5, the search formula creation unit 30 determines parameters to be input to the search engine included in the information search unit 40 based on the item selected by the query of the query unit 20.

  Specifically, when the first item “I want to buy the target product” is checked, the search expression creation unit 30 checks whether the “shopping cart” or “introduction link of the store” exists. A new search keyword that narrows down “pages that can be confirmed” is added to the original search keyword. This is because the item “I want to buy the target product” is for the purpose of online shopping for the user, and the user searches for the target product on the Internet and places an order on the spot. This is because it is set.

  When the second item “I want to know the details of the target” is checked, the search expression creation unit 30 allows the user to further select a keyword that is particularly emphasized. As a result, the search expression creation unit 30 sets a search condition that enables a search with the highest priority on the keyword to be emphasized as the original search keyword.

  In addition, when the third item of the query “I want to know the trend (trend), needs” is checked, the search formula creation unit 30 preferentially searches pages using news, SNS, Twitter, etc. Is set to the original search keyword.

  Here, a specific example of a new search expression obtained by adding a new search keyword and setting a new search condition will be described. Note that the search expression actually differs depending on the type of search engine, but in the following examples, for example, AND search is indicated by a blank and OR search is indicated by '|' .

  First, when the first item is checked, a search keyword is added to the search formula, and the search formula is, for example, “Golf Lefty Shopping Cart Store (Introduction | Outline)”. In addition, when the second item is checked, a quotation mark is set in the search formula. For example, if the keyword to be emphasized is “left”, the search formula is “golf“ left ””. Further, when the third item is checked, the search target is limited, and the search formula is, for example, “Golf Lefty News (SNS | Twitter)”.

  Here, for example, a case is assumed in which a user wants to purchase a left club for online shopping. In this case, in a normal search, the user will think of the search keyword “buy golf left club”. Even if this search keyword is used, it is possible to easily collect information on sales of clubs at a golf shop to some extent. However, despite the addition of “leftie” as a keyword, in many cases, most of the clubs sold may face the right-handed case.

On the other hand, as an answer to the question from the inquiry unit 20, two items “I want to buy the target product” and “I want to know the details of the target” are selected. Is selected. In response to the user's answer, the search formula creation unit 30 generates the following search formula in order to mainly collect information on the club for the left.
Search Formula: “Golf“ Lefty ”Club Shopping Cart Store (Introduction | Overview)”

  Here, in the above search formula, a quotation mark is added to the left, such as “left”. As for the search keyword to which the quotation mark is added, a Web page in which the total value of the search keyword hit rate and the information coverage rate in the normal search is equal to or greater than a threshold value is searched. In this embodiment, for example, α × β can be used as the threshold value in this embodiment, where α is the overall scale average (average value) of the hit rate of the search keyword and the information coverage rate. . Here, α is an “integrated scale average” set in advance. For example, α is calculated from the hit rate and information coverage rate on a typical Web page. β is an arbitrary coefficient. In the present embodiment, β is set to 1.2.

  Differences between search results using quotation marks will be described with reference to FIGS. 6 and 7. FIG. 6 shows an example of a search result when a search is performed without adding a quotation mark to the left in the embodiment of the present invention. FIG. 7 shows an example of a search result when a search is performed with quotation marks added to the left in the embodiment of the present invention.

  As shown in FIG. 6, when searching for “left” without quotation marks, an extra information page irrelevant to club purchase may be displayed as a search result. On the other hand, as shown in FIG. 7, when “left” is searched with a quotation mark, a site where the introduction of a product for leftness and shopping can be preferentially displayed.

  The “information coverage rate” described above is a scale indicating the rate at which the search keyword is referred to on the Web page, that is, the rate at which the search keyword is referred to on the Web page. Specifically, the frequency and length of the portion of the search keyword itself that is expressed as the subject, the breadth of the context of the sentence that contains the keyword, and the amount of context are calculated and obtained. The information coverage rate is obtained by adding the percentages obtained. In other words, the information coverage rate can be obtained by calculating percentages for each of the above viewpoints for the Web pages displayed by the conventional search and adding them together.

  The following describes an example of a Web page that includes 50 sentences composed of 1000 words and has a search keyword that appears 15 times. First, in this example, the hit rate of the search keyword is calculated as 15/1000 and becomes 1.5%.

  In addition, the appearance rate of a sentence describing a search keyword as a subject is calculated as 5/50 assuming that five sentences correspond to 10%. Assuming that the number of words of the five sentences corresponding to the above is 150, the ratio with respect to the length of the sentence describing the search keyword as the subject is 150/1000, which is 15%.

  Further, the ratio of the sentence including the search keyword with respect to the breadth of the context context is obtained from the maximum number of sentences that the keyword hits continuously in the scanning of one sentence. Therefore, when the three sentences are the maximum, 3/50 is calculated to be 6%. In addition, the ratio of the context including contexts in the sentence including the keyword is obtained from the number of times the keyword is included in each of the preceding and following sentences in the scanning of one sentence. If the number of times of inclusion is five, 5/50 is calculated and becomes 10%.

  In the above case, the information coverage rate is calculated by (10 + 15 + 6 + 10) and is 41%. In addition, if the integrated scale average α is calculated from the web page given as an example, the calculated average value is obtained by adding the calculated percentages and the keyword hit rate, and obtaining the average value. Is the integrated scale average α. That is, α is calculated to be 8.5% by calculating (1.5 + 10 + 15 + 6 + 10) / 5. When this α value is adopted, the “left” is obtained by multiplying the keyword hit rate and the information coverage rate by 10.2% (8.5% multiplied by 1.2). Value), it must be searched from the page that meets the criteria.

(Step A6)
Next, the information search unit 40 executes a search process using the search formula created by the search formula creation unit 30. For example, when “left” is included in the search expression, the information search unit 40 searches only Web pages whose average value of the keyword hit rate and the information coverage rate is 10.2% or more.

(Step A7)
Thereafter, when the search result list is finalized, the search result display unit 50 is called, and the search result display unit 50 displays the search result list on the screen of the output device 300. When Steps A8 and A9 are executed, the search result acquired from the search engine 502 on the cloud 500 is displayed on the screen of the output device 300 as described above.

(Details of step A6)
Here, the step A6 will be described more specifically with reference to FIG. FIG. 8 is a flowchart showing in detail the information search process shown in FIG.

  As shown in FIG. 7, first, the information search unit 40 obtains the URL (URL information group) of the Web page related to the search keyword from the distributed data store 501 (see FIG. 1) owned by the search engine vendor. Fetch (step A61).

  Next, the information search unit 40 scans the fetched URLs one by one for the number of URLs (step A62). Then, for each fetched URL, the information search unit 40 calculates a keyword hit rate for the search keyword for the Web page there (step A63), and further calculates each information coverage rate (step A64). To do.

  Then, the information search unit 40 determines whether or not the sum of the keyword hit rate obtained in step A63 and the information coverage rate obtained in step A64 is 1.2 times or more the scale criterion α (step A65). ). If the result of determination in step B5 is yes, the information search unit 40 records the URLs targeted as a search result list (step A66).

  If the result of determination in step A65 is no, or after execution of step A66, the information search unit 40 changes the target URL and executes step B3 and subsequent steps again. If each step is executed for all URLs, step A6 ends. Further, although steps A61 to A66 have been executed, for a search keyword in which the number of corresponding URLs is zero or a slight number, the information search unit 40 registers a list of URLs that are excluded as a supplement list. To do. In this case, the search result display unit 50 can display the substitute list as reference information on the screen of the output device 300 in step A7.

  The program in the embodiment of the present invention may be a program that causes the computer 110 (see FIGS. 1 and 2) to execute steps A1 to A7 shown in FIG. 3 and steps A61 to A66 shown in FIG. . By installing and executing this program on a computer, the information search support apparatus 200 and the information search support method in the present embodiment can be realized. In this case, a CPU (Central Processing Unit) of the computer functions as a search keyword input unit 10, an inquiry unit 20, a search expression creation unit 30, an information search unit 40, and a search result display unit 50 to perform processing.

  As described above, in the present embodiment, noise that is likely to be included in information desired by the user and an increase in the number of man-hours required for the search is likely to be as irrelevant as possible from information in which “sway” due to noise occurs. Part (noise) can be eliminated.

  In other words, in this embodiment, before a result is obtained by a search using a keyword, a user asks for a genre that the user particularly desires by a simple question, and the search used depending on the content of the selected answer. Search options that the engine has are automatically generated. Then, noise is eliminated by the generated search option. Therefore, according to the present embodiment, more reliable and optimum information can be obtained instantaneously. As a result, the trouble of browsing the search result list from the beginning to the end can be eliminated, and the ease of information search can be improved.

  Also, in a conventional search environment that finds hit information by enumerating search keywords well, there is a situation where the difference in knowledge of IT part, experience of browser operation, knowledge of browser operation appears as search results as it is. . Therefore, even if there are individual differences, the user thinks that “if a more effective keyword can be found, it will be possible to perform a more accurate search.” It will take a lot of time. However, according to the present embodiment, at the stage of search, even if the user has little knowledge in IT, the request at the time of search can be reconfirmed, and the user is more accurate and natural. You can perform searches in the form.

  Here, a specific example of a computer for constructing the information search support apparatus in the embodiment will be described with reference to FIG. FIG. 9 is a block diagram illustrating an example of a computer that implements the information search support apparatus according to the embodiment of the present invention.

  As shown in FIG. 9, the computer 110 includes a CPU 111, a main memory 112, a storage device 113, an input interface 114, a display controller 115, a data reader / writer 116, and a communication interface 117. These units are connected to each other via a bus 121 so that data communication is possible.

  The CPU 111 performs various calculations by developing the program (code) in the present embodiment stored in the storage device 113 in the main memory 112 and executing them in a predetermined order. The main memory 112 is typically a volatile storage device such as a DRAM (Dynamic Random Access Memory). Further, the program in the present embodiment is provided in a state of being stored in a computer-readable recording medium 120. Note that the program in the present embodiment may be distributed on the Internet connected via the communication interface 117.

  Specific examples of the storage device 113 include a hard disk and a semiconductor storage device such as a flash memory. The input interface 114 mediates data transmission between the CPU 111 and an input device 118 such as a keyboard and a mouse. The display controller 115 is connected to the display device 119 and controls display on the display device 119. The data reader / writer 116 mediates data transmission between the CPU 111 and the recording medium 120, and reads a program from the recording medium 120 and writes a processing result in the computer 110 to the recording medium 120. The communication interface 117 mediates data transmission between the CPU 111 and another computer.

  Specific examples of the recording medium 120 include general-purpose semiconductor storage devices such as CF (Compact Flash) and SD (Secure Digital), magnetic storage media such as a flexible disk, or CD-ROM (Compact Disk). Optical storage media such as Read Only Memory).

  Part or all of the above-described embodiment can be expressed by (Appendix 1) to (Appendix 15) described below, but is not limited to the following description.

(Appendix 1)
An information search support device that supports search of a Web page using a search keyword,
When a search keyword is entered, an inquiry part that outputs a question and asks for an answer,
A search expression creation unit that creates a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer;
An information search unit for searching a web page based on the search formula;
An information retrieval support device characterized by comprising:

(Appendix 2)
When the inquiry keyword represents an article, the inquiry unit asks whether the act scheduled for the article is an action set as the question, and details of the article The information search support according to appendix 1, wherein a second question for inquiring whether information is necessary and a third question for inquiring whether information on a situation where the article is placed are necessary are output. apparatus.

(Appendix 3)
The search expression creation unit
The search keyword related to the set action is added to the input search keyword when it is answered that the action is the set action for the first question. Information retrieval support device.

(Appendix 4)
The search expression creation unit
When it is answered that the detailed information of the article is necessary for the second question, the hit rate of the search keyword and the search keyword are mentioned on the Web page for the input search keyword. 4. The information search support apparatus according to appendix 2 or 3, wherein a search condition is set for searching for a Web page having an information coverage ratio indicating a ratio of being stored and a total value equal to or greater than a threshold value.

(Appendix 5)
The search expression creation unit
When the third question is answered that information on the situation where the article is placed is necessary, a Web page in a preset field is searched for the input search keyword. The information search support device according to any one of appendices 2 to 4, wherein a search condition is set.

(Appendix 6)
A method for supporting search of a web page using a search keyword,
(A) When a search keyword is input, outputting a question and asking for an answer;
(B) creating a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer; and
(C) searching for a web page based on the search formula; and
An information retrieval support method characterized by comprising:

(Appendix 7)
In the step (a), when the search keyword represents an article, as the question, a first question asking whether or not an action scheduled for the article is a set action; The second question that asks whether or not detailed information of an article is necessary and the third question that asks whether or not information on a situation where the article is placed are necessary are output. Information retrieval support method.

(Appendix 8)
In the step (b), when it is answered that the action is the set action for the first question, a search keyword related to the set action is set for the input search keyword. The information search support method according to appendix 7, which is added.

(Appendix 9)
In the step (b), when it is answered that the detailed information of the article is necessary for the second question, the hit rate of the search keyword and the search for the input search keyword The information search support method according to appendix 7 or 8, wherein a search condition is set to search for a Web page in which a total value is equal to or more than a threshold value and an information coverage rate indicating a ratio of keywords referred to on the Web page.

(Appendix 10)
In the step (b), when it is replied that the information on the situation where the article is placed is necessary for the third question, the search keyword inputted in advance is set. The information search support method according to any one of appendices 7 to 9, wherein a search condition is set for a Web page in a field as a search target.

(Appendix 11)
A program for supporting a search for a Web page using a search keyword by a computer,
In the computer,
(A) When a search keyword is input, outputting a question and asking for an answer;
(B) creating a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer; and
(C) searching for a web page based on the search formula; and
A program that executes

(Appendix 12)
In the step (a), when the search keyword represents an article, as the question, a first question asking whether or not an action scheduled for the article is a set action; The second question that asks whether or not detailed information of an article is necessary, and the third question that asks whether or not information on a situation where the article is placed are necessary. program.

(Appendix 13)
In the step (b), when it is answered that the action is the set action for the first question, a search keyword related to the set action is set for the input search keyword. The program according to appendix 12, which is added.

(Appendix 14)
In the step (b), when it is answered that the detailed information of the article is necessary for the second question, the hit rate of the search keyword and the search for the input search keyword 14. The program according to appendix 12 or 13, wherein a search condition is set for searching for a web page in which a keyword is referred to on a web page and an information coverage rate and a total value equal to or greater than a threshold value.

(Appendix 15)
In the step (b), when it is replied that the information on the situation where the article is placed is necessary for the third question, the search keyword inputted in advance is set. The program according to any one of appendices 12 to 14, wherein a search condition for setting a web page in a field as a search target is set.

  As described above, according to the present invention, the user can search for appropriate information regardless of the level of search technology and search knowledge. The present invention is useful in the field of information retrieval.

DESCRIPTION OF SYMBOLS 10 Search keyword input part 20 Query part 30 Search formula creation part 40 Information search part 50 Search result display part 100 Communication apparatus 110 Computer 111 CPU
112 Main memory 113 Storage device 114 Input interface 115 Display controller 116 Data reader / writer 117 Communication interface 118 Input device 119 Display device 120 Recording medium 121 Bus 200 Information search support device 300 Output device 301 Input device 500 Cloud 501 Distributed data store 502 Search engine

Claims (7)

An information search support device that supports search of a Web page using a search keyword,
When a search keyword is entered, an inquiry part that outputs a question and asks for an answer,
A search expression creation unit that creates a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer;
An information search unit for searching a web page based on the search formula;
An information retrieval support device characterized by comprising:   When the inquiry keyword represents an article, the inquiry unit asks whether the act scheduled for the article is an action set as the question, and details of the article The information retrieval according to claim 1, wherein a second question for inquiring whether information is necessary and a third question for inquiring whether information on a situation where the article is placed are necessary are output. Support device. The search expression creation unit
The search keyword related to the set action is added to the input search keyword when it is answered that the set action is the answer to the first question. Information retrieval support device. The search expression creation unit
When it is answered that the detailed information of the article is necessary for the second question, the hit rate of the search keyword and the search keyword are mentioned on the Web page for the input search keyword. The information search support apparatus according to claim 2 or 3, wherein a search condition is set for searching for a Web page in which an information coverage ratio indicating a ratio of the content and a total value are equal to or greater than a threshold value. The search expression creation unit
When the third question is answered that information on the situation where the article is placed is necessary, a Web page in a preset field is searched for the input search keyword. The information search support apparatus according to claim 2, wherein search conditions are set. A method for supporting search of a web page using a search keyword,
(A) When a search keyword is input, outputting a question and asking for an answer;
(B) creating a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer; and
(C) searching for a web page based on the search formula; and
An information retrieval support method characterized by comprising: A program for supporting a search for a Web page using a search keyword by a computer,
In the computer,
(A) When a search keyword is input, outputting a question and asking for an answer;
(B) creating a new search expression by adding a new search keyword, setting a new search condition, or both for the input search keyword based on the answer; and
(C) searching for a web page based on the search formula; and
A program that executes

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