JP4842246B2 - Information retrieval apparatus and program - Google Patents

Description

  The present invention relates to an information search apparatus and program, and more particularly, to an information search apparatus and program for displaying information that matches a request condition specified by a user.

The purpose of the conventional information retrieval method is to provide information requested by the user more accurately. In the conventional information retrieval method, information matching a request condition specified by the user is retrieved from the database, and a result list is displayed. And when letting the user select one search result from the displayed search result list and letting the user browse the original information, the characteristic part of the information is taken out from the original information and displayed separately from the original information, The user is made to select the characteristic portion, and the display of the search result list is changed according to the selection result (for example, see Non-Patent Document 1).
"A Study on Interaction in Full Text Search" NTT Human Interface Laboratory, Proceedings of the IEICE General Conference, Vol. 1996, Information and Systems, No.1 (19960311) p.201

  However, in the above information search system, since the original information and the feature part to be browsed by the user are individually displayed, the browsing is inconvenient, the burden on the user is large, and it takes time to select the feature part. Take it. As a result, even if the information requested by the user is provided more accurately by changing the display of the search result list according to the selection result of the user, the information requested by the user as a whole There is a problem that it is difficult to provide comfortably and quickly.

  The present invention has been made in view of the above points. By changing the display method of the search result list in accordance with the user's selection result, a search result that is faster and satisfies the user can be obtained. An object of the present invention is to provide an information retrieval apparatus and a program that can be provided.

  FIG. 1 is a principle configuration diagram of the present invention.

The present invention (Claim 1) is an information search device that searches a database for information that matches an input requirement and displays a search result list.
An input unit 10 for receiving an input of a request condition from the user terminal 2, a search result selected by the user, and a satisfaction level;
A search unit 20 that searches the database 30 based on the request condition, and stores the search result and original information corresponding to the search result in the search result storage unit 40;
The search results are read out from the search result storage means 40, displayed in a list on the user terminal 2, let the user select one search result, and feature words are extracted from the original information corresponding to the search result selected by the user First display control means 501 for highlighting the feature word in the original information;
A second display that obtains the satisfaction level for the feature word of the original information from the user terminal 2, changes the display of the search result displayed in the search result list based on the satisfaction level, and displays the search result on the user terminal 2 again. And control means 502.

Further, the present invention (claim 2) is the first search result display control means 501,
When displaying the original information on the user terminal 2, a feature sentence including a request condition is extracted from the original information, and dependency analysis is performed on the feature sentence, and a keyword (feature word) representing the feature of the feature sentence is specified. Means to do.

Further, according to the present invention (claim 3), in the second search result display control means 502,
When satisfaction with the highlighted feature word selected on the user terminal 2 is low, the search result list is changed by deleting the search result including the feature word from the search result list or lowering the display ranking. Including means.

  The present invention (Claim 4) is an information search program for causing a computer to function as each means constituting the information search apparatus according to any one of Claims 1 to 3.

  As described above, according to the present invention, it becomes possible to obtain the satisfaction level of the user with respect to the search result. By using this, the user can change the display ranking of the initial search result list to obtain the user. It is possible to provide a list of search results in which information requested by the user is included at the top or a list of search results in which information not requested by the user is not included in the top of the search result list.

  In addition, when browsing the original information, highlighting the words that uniquely represent the original information with highlights or underlines, etc., has the effect of making it easier for the user to understand the content represented by the article. is there. As described above, by changing the display of the search result list in accordance with the selection result of the user, it becomes possible to provide a search result that is faster and satisfies the user.

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

  FIG. 2 shows the configuration of the information search apparatus in one embodiment of the present invention.

  The information search apparatus 1 shown in FIG. 1 includes an input / output unit 10, a search unit 20, a database 30, a search result storage unit 40, and a display control unit 50, and the input / output unit 10 is connected to the user terminal 2.

  The input / output unit 10 receives the request condition and the satisfaction level input from the user terminal 1. Further, the information passed from the display control unit 50 is output to the user terminal 1.

  The search unit 20 searches the database 30 based on the request condition, and stores the search result and original information in the search result storage unit 40 together with the request condition.

  The display control unit 50 has the configuration shown in FIG. The display control unit 50 shown in the figure includes a search result reading unit 51, a feature extraction unit 52, a display format control unit 53, a satisfaction degree determination unit 54, and a ranking adjustment unit 55.

  The search result reading unit 51 reads the search result and the original information from the search result storage unit 40.

  The feature extraction unit 52 extracts a characteristic portion characteristically representing the article content from the original information article when the user of the user terminal 2 browses the original information. Details of the operation will be described later.

  The display format control unit 53 performs the following editing.

・ Edit the retrieved search results into a list display format;
-Edit the original information corresponding to the search result selected from the search list by the user into a predetermined display format;
・ Edit to highlight features of original information;
-Change the display format of the search result list according to the ranking;
When the satisfaction level of whether or not the highlighted article content is satisfactory is input or selected, the satisfaction level determination unit 54 determines whether the satisfaction level of the selection result is high or low. In the determination, when the original information is displayed on the user terminal 2, when “high” or “low” is selected as the satisfaction degree, “high” = 1, “low” = 0 as the selection result. And Alternatively, when selecting the number of points, a method such as “1” when higher than a predetermined value and “0” when lower is conceivable.

  When the satisfaction level determination unit 54 determines that the satisfaction level of the article including the feature word to be determined is high (“1”), the ranking adjustment unit 55 ranks the article including the feature word in a higher rank. When it is determined that the degree of satisfaction of the article including the feature word is low (“0”), the article including the feature word is ranked lower, and the ranking result is output to the display format control unit 53.

  FIG. 4 is a sequence chart of the operation of the information search processing device according to the embodiment of the present invention. The specific operation will be described below with reference to the sequence chart of FIG.

  Step 101) First, a request condition “Beijing” designated by the user is input to the input / output unit 10 from the user terminal 2.

  Step 102) The search unit 20 searches the database 30 based on the input request condition “Beijing”, and stores the search result and the original information in the search result storage unit 40.

  Step 103) The search result reading unit 51 of the display control unit 50 acquires the search result from the search result storage unit 40, and the display format control unit 53 edits the search result into a list display format as shown in FIG. And sent to the user terminal 2 via the input / output unit 10. However, in the example of FIG. 5, the information requested by the user is related to sightseeing in Beijing such as “Great Wall” and “Forbidden City”. Further, information on tourism in Beijing is included in the original information of the search results “2. Beijing tourist information” and “3. Chinese tourist attractions”. The search results “1. Present Beijing” “4. The original information of “Business” does not include information on tourism in Beijing, but includes information on “Olympic”.

  Step 104) Next, the user terminal 2 displays the search result list received from the information search device 1 on the display means (not shown).

  Step 105) When the user selects one search result from the search result list displayed on the display means (not shown), the selected information is transmitted to the information search device 2. Here, it is assumed that the search result “1. Present Beijing” in FIG. 5 is selected.

  Step 106) The feature extraction unit 52 of the information search apparatus 2 acquires the original information on the selected “1. Beijing present” as shown in FIG. 6 from the search result reading unit 51, and extracts the feature portion from the original information. Extract. Here, it is assumed that “Olympic”, “People's Republic of China”, “Capital” and “Venue” are extracted as features.

  Step 107) The display format control unit 53 performs editing for highlighting the feature portion from which the original information is extracted, and transmits it to the user terminal 2 via the input / output unit 10. Various display patterns such as bold display, underline, color coding, and highlight can be considered for the highlight display.

  Step 108) At the user terminal 2, as shown in FIG. 7, the highlighted original information is displayed on the display means (not shown).

  Step 109) The user selects the highlighted feature portion and inputs whether the feature portion is satisfied or dissatisfied. Although not shown, it is assumed that a region for selecting satisfaction / dissatisfaction is displayed together with the original information.

  Step 110) The satisfaction degree determination unit 54 of the display control unit 50 acquires the feature part and the input of satisfaction / dissatisfaction with the feature part via the input / output unit 10, and when “satisfaction” is input, The search result list displayed in step 103 is left unchanged. When “dissatisfied” is input, the ranking adjustment unit 55 ranks search results that do not include the dissatisfied feature portion in a higher rank. As a result, the search result list is changed as shown in FIG.

  Step 111) The display format control unit 53 edits the search result list in the order ranked by the ranking adjustment unit 55, and transmits it to the user terminal 2 via the input / output unit 10.

  Thereby, on the user terminal 2, a search result list as shown in FIG. 8 is displayed. In the example in the figure, it is assumed that “Olympic” is selected by the user as a negative feature. Here, the search results “1. Present Beijing” and “4. Chinese business” including the information related to “Olympic” in the original information are deleted from the initial search result list and displayed in a list.

  Next, the feature word extraction in step 106 and the highlighted display in step 107 will be described in detail.

  As a technique for extracting features used in step 106, for example, there are techniques disclosed in Japanese Patent Application Laid-Open No. 11-250072 and Japanese Patent Application Laid-Open No. 11-338869 as feature word extraction techniques. As a feature extraction technique, there are techniques disclosed in Japanese Patent Laid-Open Nos. 2001-160057 and 2003-323437, and as a signal feature extraction technique, a technique disclosed in Japanese Patent No. 3537727. There is. Here, an example using dependency analysis will be described.

  FIG. 9 is a flowchart of feature portion extraction / display in an embodiment of the present invention.

  Step 201) First, the feature extraction unit 52 of the display control unit 50 extracts a characteristic sentence from the original information. Here, text information as shown in FIG. 6 is assumed as the original information. The characteristic sentence is a sentence including the keyword “Beijing”, which is a requirement of the user. In the above example, the following sentences are characteristic sentences.

“The Beijing Olympics will be hosted in Beijing, the capital of the People's Republic of China, from August 8 to August 24, 2008.”
Step 202) Next, for example, dependency analysis as shown in FIG.

  Step 203) Further, a characteristic keyword (feature word) is specified by the dependency relationship. Here, a keyword having a dependency relationship with a user's request condition is used as a feature word. However, the keyword does not include function words such as the particles “te”, “ni”, “ha”, “ha”, and the dependency between the function words is regarded as the dependency between the keywords. In the above feature sentence example, the keywords related to the user requirement “Beijing” are “Olympic”, “People's Republic of China”, “Capital”, “Venue”, among which “People's Republic of China” The particle "no" is sandwiched between "Beijing" and the particle "no" is sandwiched between "Beijing" and "Venue".

  Step 204) Edit the highlighted feature word so that it is highlighted. However, if a feature word appears in a sentence that does not include the user's requirement, the feature keyword is also highlighted.

  As described above, since the display of the search result list can be changed according to the selection result (satisfaction level) of the user, the search result requested by the user can be provided.

  The operation of the constituent elements of the information search apparatus of FIG. 2 in the above embodiment can be constructed as a program and installed and executed on a computer used as the information search apparatus, or distributed via a network. is there.

  Further, the constructed program can be stored in a portable storage medium such as a hard disk, a flexible disk, or a CD-ROM, and can be installed or distributed in a computer.

  The present invention is not limited to the above-described embodiment, and various modifications and applications can be made within the scope of the claims.

  The present invention is applicable to an information retrieval technique for retrieving information from a database based on conditions such as an input keyword.

It is a principle block diagram of this invention. It is a block diagram of the information search device in one embodiment of the present invention. It is a block diagram of the display control part in one embodiment of this invention. It is a sequence chart of the information search device in one embodiment of the present invention. It is an example of the search result list in one embodiment of the present invention. It is an example of the original information of the search result in one embodiment of this invention. It is an example of the highlight display of the characteristic part in one embodiment of this invention. It is an example of a change of the search result list in one embodiment of the present invention. It is the flowchart which detailed the highlighting of the characteristic part in one embodiment of this invention. It is an example of the dependency analysis of the feature sentence in one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information retrieval apparatus 2 User terminal 10 Input means, input / output part 20 Search means 30 Database 40 Search result storage means 50 Display control part 51 Search result reading part 52 Feature extraction part 53 Display format control part 54 Satisfaction judgment part 55 Ranking adjustment Unit 501 First display control means 502 Second display control means

Claims (4)

An information search device that searches a database for information that matches an input request condition and displays a search result list,
An input means for receiving an input of the request condition from the user terminal, a search result selected by the user, and a satisfaction level;
Search means for searching the database based on the request condition, and storing a search result and original information corresponding to the search result in a search result storage means;
The search results are read from the search result storage means, displayed in a list on the user terminal, the user is allowed to select one search result, and feature words are extracted from the original information corresponding to the search result selected by the user. First display control means for extracting and highlighting the feature word in the original information;
A second display that obtains the satisfaction level of the feature word of the original information from the user terminal, changes the display of the search result displayed in the search result list based on the satisfaction level, and displays the search result on the user terminal again Control means;
An information retrieval apparatus comprising: The first search result display control means includes:
When the original information is displayed on the user terminal, a feature sentence including the request condition is extracted from the original information, a dependency analysis is performed on the feature sentence, and a keyword (feature word) that represents the feature of the feature sentence The information retrieval apparatus according to claim 1, further comprising means for identifying The second search result display control means includes:
If the degree of satisfaction with the highlighted feature word selected on the user terminal is low, the search result list is deleted by deleting the search result including the feature word from the search result list or by lowering the display ranking. The information retrieval apparatus according to claim 1, comprising means for changing.   The information search program which makes a computer function as each means which comprises the information search device of any one of Claims 1 thru | or 3.

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