JP3405958B2 - Document search device, document search method, and recording medium - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document search device, a document search method, and a document search method suitable for displaying a message according to a search input or a search result and providing useful information regarding the search.
Also, the present invention relates to a computer-readable recording medium recording a program for realizing these.

[0002]

2. Description of the Related Art With the development of WWW (World Wide Web) technology, a document search technology for searching a desired document from a large number of documents is becoming more and more important.

In such document retrieval, the following methods have been conventionally used. That is, the user specifies a keyword for searching for a desired document, or inputs a query specifying a condition for searching for a document in more detail.

Then, the document search engine obtains the number of times the keyword is included in the document and the matching degree between the document and the condition specified by the query by the vector space method.
The score of the document is calculated based on these.

Finally, documents with high scores are presented to the user in order as search results.

[0006]

However, in such a document search, the time from when the user specifies a keyword or the like until the result is displayed is generally long, and there are too many or too few search results. In many cases, no significant result is obtained. So before doing the actual search,
There is a great demand for the user to be able to obtain information about what kind of search result will be obtained by the designated keyword.

There is also a strong demand for the user to be able to obtain information indicating the relationship between the keyword specified by the user and the obtained search result.

The problem to be solved by the present invention is to search a document while displaying a message according to a search input or a search result to provide useful information regarding the search.

[0009]

In order to solve the above-mentioned problems, a document search device according to a first aspect of the present invention comprises a document storage unit, a word index unit, a character string input receiving unit,
Collation unit, collation result display unit, inquiry unit, search unit,
To be provided.

Here, the document storage unit stores a plurality of documents.

On the other hand, the word index section stores in advance the words that appear in the accumulated documents.

Further, the character string input receiving unit receives the input of the character string.

Then, the collation unit collates whether or not the received character string is the previously stored word.

On the other hand, the collation result display section displays the collation result.

Further, the inquiry unit inquires whether to start the search.

Then, when starting the search as a result of the inquiry, the search unit searches the accumulated plurality of documents for a document in which the accepted character string appears.

According to the present invention, the user can know in advance whether or not a significant search result can be obtained before the search processing.

Further, in the document retrieval apparatus of the present invention, the word index section further stores in advance the number of documents in which the word appears, and the collation section stores the accepted character string in advance. In the case of a word, the number of documents in which the character string appears can be acquired from the word index unit and added to the result of the matching.

According to the present invention, the user can be informed of how many search results can be obtained before the search processing.

Further, in the document retrieval apparatus of the present invention, the character string input acceptance unit accepts an input of a plurality of character strings, and the collation unit stores each of the accepted plurality of character strings in advance. It can be configured to match whether or not the word is a word.

According to the present invention, even when a user inputs a plurality of keywords, the user can predict the search result for each of these keywords or collectively.

Further, the document search device of the present invention can be configured to further include a message storage unit.

Here, the message storage unit stores each of the plurality of messages in association with a predetermined condition.

On the other hand, the collation result display unit displays the message when the collated result satisfies the condition associated with any of the stored messages.

According to the present invention, the user can obtain the information on the prediction of the search result in an easy-to-understand sentence.

Further, the document search device of the present invention can be configured to further include a message storage unit and a search result display unit.

Here, the message storage unit stores each of the plurality of messages in association with a predetermined condition.

On the other hand, the search result display unit displays the document of the searched result, and further displays the message if the matched result satisfies the condition associated with any of the stored messages. indicate.

According to the present invention, the user can obtain the information as to why the search result is so, in the easy-to-understand sentence.

In the document search method according to the second aspect of the present invention, words appearing in a plurality of stored documents are stored in advance, a search is performed from the stored plurality of documents, and a character string input is accepted. A process, a collation process, a collation result display process, an inquiry process, and a search process are provided.

Here, in the character string input receiving step, the input of the character string is received.

On the other hand, in the collating step, it is collated whether or not the received character string is the previously stored word.

Further, in the collation result display step, the collation result is displayed.

Then, in the inquiry step, it is inquired whether or not to start the search.

On the other hand, in the search step, when starting the search as a result of the inquiry, a document in which the accepted character string appears is searched from the plurality of stored documents.

Further, in the document search method of the present invention, in addition to the words appearing in the accumulated plurality of documents, the number of documents in which the words appear is further stored in advance, and the collating step is accepted. When the character string is the previously stored word, the number of documents in which the previously stored character string appears can be acquired and added to the result of the matching.

Further, in the document retrieval method of the present invention, the character string input acceptance step accepts an input of a plurality of character strings, and the collation step stores each of the accepted plurality of character strings in advance. It can be configured to match whether or not the word is a word.

Further, in the document search method of the present invention, each of the plurality of messages is stored in advance in association with a predetermined condition, and the collation result display step includes the collation result of any one of the stored messages. When the condition associated with the message is satisfied, the message can be displayed.

Further, the document search method of the present invention can be configured to further store a search result display step in which each of a plurality of messages is stored in advance in association with a predetermined condition.

Here, in the search result display step, in addition to displaying the document of the retrieved result, if the collated result satisfies the condition associated with any of the stored messages, the message is displayed. Show more.

A computer-readable recording medium according to a third aspect of the present invention records a program, and the program causes the computer to store a document storage unit, a word index unit, a character string input receiving unit, a collation unit, and a collation unit. It functions as a result display unit, an inquiry unit, and a search unit.

Here, the document storage unit stores a plurality of documents.

On the other hand, the word index section stores in advance the words that appear in the accumulated documents.

Further, the character string input receiving unit receives the input of the character string.

Then, the collation unit collates whether or not the received character string is the previously stored word.

On the other hand, the collation result display section displays the collation result.

Further, the inquiry unit inquires whether to start the search.

Then, when starting the search as a result of the inquiry, the search section searches for a document in which the accepted character string appears from the plurality of stored documents.

Further, in the computer according to the program recorded on the recording medium of the present invention, the word index section further stores in advance the number of documents in which the word appears, and the collating section receives the received document. When the character string is the previously stored word, the number of documents in which the character string appears may be acquired from the word index unit and configured to add to the result of matching. it can.

Further, the program recorded on the recording medium of the present invention is, in the computer, the character string input receiving unit receives an input of a plurality of character strings, and the collating unit receives a plurality of the received characters. It can be configured to function to match whether each of the columns is the pre-stored word.

Further, the program recorded on the recording medium of the present invention can be configured to cause the computer to further function as a message storage unit.

Here, the message storage unit stores each of the plurality of messages in association with a predetermined condition.

On the other hand, the collation result display section displays the message when the collated result satisfies the condition associated with any of the stored messages.

Further, the program recorded on the recording medium of the present invention can be configured to cause the computer to further function as a message storage unit and a search result display unit.

Here, the message storage unit stores each of the plurality of messages in association with a predetermined condition.

On the other hand, the search result display unit displays the document of the searched result, and further displays the message if the matched result satisfies the condition associated with any of the stored messages. indicate.

[0057]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

(Outline Configuration) FIG. 1 shows a typical information processing apparatus (including a general-purpose computer, various terminals, mobile terminals, mobile phones, game machines, and other dedicated equipment) that functions as the document search apparatus of the present invention. It is a schematic diagram which shows a schematic structure.
Hereinafter, description will be given with reference to this figure.

The information processing apparatus 101 has a CPU (Central
Processing Unit (Central Processing Unit) 102. When the information processing apparatus 101 is powered on,
The CPU 102 has an IPL (Initial Program) stored in a ROM (Read Only Memory) 103.
Loader; initial program loader) is executed.

The IPL is the hard disk 104, FD
(Floppy Disk; FD, CD-ROM (Compac)
CD-ROM installed in the drive 111
OS (Operating System) stored in a recording medium such as
Operating system) A program that reads and executes a program.

After booting the OS, the CPU 102 follows the user's instructions input through the keyboard 105, the mouse 106, etc., or the hard disk 10
The application program stored in the hard disk 104 or the like is executed in accordance with the contents of the setting file previously described in 4 or the like.

In a small-scale information processing device such as a mobile terminal, an embodiment in which the IPL itself functions as an OS and an application program can be adopted.

The CPU 102 uses a RAM (Random Access Memory) 107 as a temporary work storage area when executing a program. In addition, a register and a cache (not shown) provided in the CPU 102 are used as a temporary work storage area.

In order to report the result to the user and show the progress along with the execution of the program, the CPU 102
Can display the information on a display device 108 such as a liquid crystal display or a CRT (Cathode Ray Tube). In the instruction operation by the mouse 106, the cursor displayed on the screen is moved by moving the mouse 106, and the menu item pointed by the cursor can be selected by clicking the mouse 106.

The information processing apparatus 101 is a NIC (Network
Interface card, interface such as modem 10
9 can communicate with a computer communication network such as the Internet. It is possible to send a query to another server computer (document search engine) through the interface 109 and receive a search result sent as a response. It is also possible to execute the program received via the interface 109.

(First Embodiment) FIG. 2 is a schematic diagram showing a schematic configuration of each function when the information processing apparatus 101 functions as the document search apparatus of the present invention. Hereinafter, description will be given with reference to this figure.

The document search device 201 includes a document storage unit 20.
2, word index unit 203, character string input acceptance unit 20
4, collation unit 205, collation result display unit 206, inquiry unit 2
07, and a search unit 208.

Further, as shown in the figure, a message storage unit 209 and a search result display unit 210 may be provided.

The document storage unit 202 is a document database that stores documents to be searched. Therefore, the hard disk 104 or the CD-ROM mounted on the CD-ROM drive 111 functions as the document storage unit 202. Further, another information processing apparatus (document database server) connected via the interface 109 may function as the document storage unit 202.

The word index unit 203 stores the words included in the document stored in the document storage unit 202. Therefore, as a result of checking whether or not the word is stored in the word index unit 203, if the word is not stored in the word index unit 203, even if a search is performed for the word in the document database including the document storage unit 202, it is significant. We know in advance that no results will be obtained.

In this embodiment, the document storage unit 202
It records not only the words that appear in the documents stored in, but also how many documents the word appears in. By using this information, it is possible to know how many documents will be obtained as search results before executing the search.

Therefore, the hard disk 104 and the CD
A CD-ROM or the like mounted in the ROM drive 111 functions as the word index unit 203. Also,
Another information processing device (document database server) connected via the interface 109 may function as the word index unit 203.

The character string input receiving unit 204 receives a character string indicating a search keyword input by the user. Therefore, the input device such as the keyboard 105 or the mouse 106 is a window system or GUI (Graphical User Int.
(e.g. erface), it appropriately cooperates with the display device 108 to function as the character string input receiving unit 204.

The matching unit 205 checks whether or not the search keyword input by the user is stored in the word index unit 203. Therefore, the CPU 102 functions as the matching unit 205. In addition, when the information is accumulated, the information on the number of appearing documents can be displayed together. Further, as will be described later, it can be displayed using a message registered in advance.

The collation result display unit 206 displays the result of collation by the collation unit 205. As the matching result, for example, the following can be adopted. "The document in which the input character string appears does not exist in the database."
"A document in which the input character string appears appears in the database.""The input character string appears in XX documents in the database."

Therefore, the display device 108 functions as the matching result display section 206.

The inquiry unit 207 inquires of the user whether or not to start the search after showing the collation result.
Therefore, the CPU 102 cooperates with the display device 108, the keyboard 105, and the mouse 106 to operate the inquiry unit 207.
Function as.

The search unit 208, when it is decided to start the search as a result of the inquiry to the user, the document storage unit 20.
Documents in which the character string input as the search keyword appears are searched from the documents stored in 2. Therefore, the CPU 102 functions as the search unit 208. When the document storage unit 202 is another information processing apparatus (document database server) connected via the interface 109, the CPU 102 generates a search query for the document database server, and uses the interface 109 to generate a search query. And the search result responded by the document database server is received.

The retrieval result is the hard disk 104 or RA.
The data may be stored in the M107 or the like, and may be displayed on the display device 108 described later.

A plurality of search keywords can be input, and a document containing all of them can be searched.

Further, as shown in the figure, it can be configured to include a message storage unit 209 and a search result display unit 210.

The search result display section 210 displays the result of the search by the search section 208. Therefore, the display device 10
8 functions as the search result display unit 210.

The message storage unit 209 has a collating unit 205.
A message for providing useful information to the user when displaying the result of the matching by the matching result display unit 206 or when displaying the result of the search by the search unit 208 by the search result display unit 210, and the message. And a display condition for displaying.

The correspondence between the display condition and the message may be as follows. The following are display conditions and messages used when the verification result display unit 206 displays the verification results (this is also part of the display conditions).

(1) Documents that can be obtained as search results even if a search is performed using the search keyword XX for the display condition "when one search keyword is input and there is no document in which the search keyword appears" there is no".

As a result, even if the search by the search unit 208 is started, the user can be warned that the processing is useless.

(2) Display condition "When one search keyword is input and the number of documents in which the search keyword appears exceeds a predetermined number", the message "Search keyword ○
Documents obtained as search results even if a search is performed with ○ × ×
It will be individual and may take a long time to process. "

As a result, the user may find that the load of the search processing is high and that the work of browsing the search results is difficult.
You can know before searching.

(3) In response to the display condition "when a plurality of search keywords are input and some of them do not appear in the document", the message "Of the relevant search keywords, XX does not appear in the document" is displayed.

As a result, it is possible to warn the user in advance that there is a possibility that a search result that matches the user's intention may not be obtained.

On the other hand, the following is a case where the search result display unit 210 displays the search result (this is also part of the display condition).
It is a display condition and a message used for.

(4) In response to the display condition "when the number of documents in which the search keyword appears for the search keyword is less than a predetermined number", the message "There are few search results
This is because there are XX documents in which the search keyword XX appears. "

As described above, the reason for such determination, the causal relationship, and the like can be described in the message in advance.

In this case, the CPU 102 searches for a message satisfying the display condition and displays the message on the display device 1.
08 is displayed.

(Flow of Document Retrieval Processing) FIG. 3 is a flowchart showing the flow of processing in the document retrieval apparatus 201 of this embodiment. Hereinafter, description will be given with reference to this figure.

First, the document search apparatus 201 causes the character string input acceptance unit 204 to accept a character string indicating a search keyword input by the user (step S301).

Next, the collating unit 205 checks information such as whether or not the search keyword input by the user is stored in the word index unit 203 (step S30).
2).

Next, the collation result display unit 206 compares the collation result by the collation unit 205 with the display condition stored in the message storage unit 209 to acquire the message satisfying the display condition (step S303).

Further, the collation result display unit 206 displays the collation result together with the message (step S
304).

Then, the user is inquired whether or not to start the search (step S305).

When the search is started as a result of inquiring the user (step S305; Yes), the search unit 208 receives a character string input as a search keyword from the document stored in the document storage unit 202. The document in which is appears is searched (step S306).

Further, the search result display unit 210 compares the search results with the display conditions stored in the message storage unit 209 to acquire the message satisfying the display conditions (step S307).

Finally, the search result display section 210 displays the search result together with the message (step S
308), and this processing ends.

On the other hand, as a result of the inquiry to the user, if the search is not performed (step S305; N).
o), this processing is ended.

As described above, in the present embodiment, it is possible to present the prediction of the search result before performing the search and the reason for the search result after performing the search, in easy-to-understand sentences to the user.

(Second Embodiment) In the above-mentioned embodiment, even when a plurality of search keywords are input, the weights of those searches are the same. However, in the present embodiment, This is to devise a message to be displayed in a search in which a search keyword is weighted, such as a format such as "XX of XX".

In the present embodiment, the character string input acceptance unit 204
Then, the character string is accepted, the morpheme analysis is performed on the character string, and the dependency relation is examined. When there is a dependency relationship such as "○○ no XX", the search keyword "○" is generally used.
In many cases, a user who conducts a search by placing importance on "○" rather than the search keyword "XX" will meet the user's intention.

This can be realized by making the weight of the search keyword "XX" larger than the weight of the search keyword "XX" when obtaining the matching condition between the search condition and the document by the space vector method.

In addition, when searching, "XX" or "X"
A search query is generated such that the matching degree is higher in the case where “X” appears alone and in the case of a dependency relationship such as “XX of XX”.

Further, in this case, it is general to present the search result documents in descending order of suitability. At this time, the following display conditions and messages are stored in the message storage unit 209.

(A) In response to the display condition "there are search keywords with different weights and there are a plurality of search result documents", the message "keyword XX is considered to be the most important, so XX appears. Documents are at the top of the search results. " (B) Since the display condition "there are a plurality of search result documents for the search keyword having a dependency relationship", the dependency relationship of "XX of XX" is emphasized. , Documents with this relationship are at the top of the search results. "

As described above, in this embodiment, it is possible to provide the user with useful information about the search result when a plurality of keywords are designated.

[0113]

According to the present invention, a document search apparatus, a document search method, and a document search method suitable for displaying a message in accordance with a search input or a search result and providing useful information regarding the search, and to realize the same. A computer-readable recording medium recording a program can be provided.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a schematic configuration of a typical information processing device that functions as a document search device of the present invention.

FIG. 2 is a schematic diagram showing a schematic configuration of each function of the document search device according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing a procedure of document search processing according to the present invention.

[Explanation of symbols]

101 Information processing device 102 CPU 103 ROM 104 hard disk 105 keyboard 106 mice 107 RAM 108 display device 109 interface 110 FD drive 111 CD-ROM drive 201 Document Retrieval Device 202 Document storage unit 203 word index part 204 Character string input reception part 205 Collating unit 206 Verification result display section 207 Inquiry section 208 Search 209 Message storage section 210 Search result display area

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06F 17/30-17/30 419

Claims (9)

(57) [Claims] 1. A document storage unit that stores a plurality of documents, a word index unit that stores in advance words that appear in the plurality of stored documents, and a character string input reception unit that receives input of one or more character strings. And a collation unit that collates whether each of the one or more received character strings is the previously stored word, a collation result display unit that displays the collation result, and a search is started. an inquiry unit whether asking, the query result is to start searching, from said stored plurality of document, a search unit for searching a document the accepted character string appears, the plurality of messages Corresponding each to a predetermined condition
A message storage unit for storing and a search result display unit for displaying the document of the searched result
And the collation result display unit stores the collation result in the memory.
The condition associated with one of the
In this case, the message is further displayed, and the search unit selects one of the received characters from the received character string.
If there are multiple words that have been memorized,
Due to the dependency relationship of the word, the accepted character
The relevance of the document in which the string appears is calculated, and the retrieval result display unit displays the retrieval result document in advance.
In addition to displaying in the order of the calculated conformance,
The result is associated with one of the stored messages
If the specified conditions are met, display the message further
However, the dependency relation of the word is stored in the message.
If the conditions associated with any of the
A document retrieval device characterized by further displaying a message . 2. The collation result display section receives the received information.
Which is the previously stored word in the character string
If there is more than one, the dependency relation of the word is stored in the memory.
Done The conditions associated with one of the
If you add it, the message is displayed further
The document search device according to claim 1. 3. The word index unit further pre-stores the number of documents in which the word appears, and the collation unit, if the accepted character string is the pre-stored word, the character string There obtains the number of documents emerging from the word index part, also claim 1, characterized in that to add it to the result of the matching
Is the document search device described in 2 . 4. A word appearing in a plurality of accumulated documents is stored in advance , and each of a plurality of messages is designated as a predetermined message.
Previously stored in association with the condition, from the stored plurality of documents, a document search method for searching, more than one character string input and string input accepting step of accepting a, was the accepted 1 query process each of the above character string, querying a collating step for collating whether the a word which is previously stored, a matching result display step of displaying the result of the comparison, whether to start the search And a search step of searching a document in which the accepted character string appears from the plurality of stored documents when starting the search as a result of the inquiry, and a search for displaying the document of the searched result. Result display process
And the stored message in the collation result display step.
If the conditions associated with any of the
A message is displayed, and in the search step, the previous one of the received character strings is displayed.
If there are multiple words that are stored in advance,
In the case of
The matching degree of the document applied by the character string is obtained, and in the search result display step, the document of the searched result is obtained.
Are displayed in the order of the calculated goodness of fit, and
The result corresponds to one of the stored messages
If the specified conditions are met, add the message
It is displayed and the dependency relation of the word is stored in the stored message.
If the conditions associated with any of the sages are met,
A document search method characterized by further displaying the message . 5. The acceptance in the collation result display step
Of the previously stored word in the character string
If there is more than one thing, the dependency relationship of the word is
Conditions associated with any of the stored messages
If the message is
The document search method according to claim 4, which is characterized in that. 6. In addition to the words appearing in the stored plurality of documents, and further stores in advance the number of documents the word appears, the verification process, the accepted character string the prestored when a word, the obtains the number of documents that previously stored the character string appears, also claim 4, characterized in that to add it to the result of the matching
Is the document search method described in 5 . 7. A computer, a document storage unit that stores a plurality of documents, a word index unit that stores in advance words that appear in the plurality of stored documents, and a character string input reception unit that receives input of one or more character strings. Section, a collation section that collates whether or not each of the one or more accepted character strings 1 is the prestored word, a collation result display section that displays the collation result, whether to start a search inquiry unit inquiring whether the query result is to start searching, from said stored plurality of document, the search unit for searching a document the accepted character string appears, given each of the plurality of message Corresponding to the condition of
A message storage unit for storing, and a search result display unit for displaying the document of the searched result
The collation result display unit stores the collation result in the memory.
The condition associated with one of the
In this case, the message is further displayed, and the search unit selects one of the received characters from the received character string.
If there are multiple words that have been memorized,
Due to the dependency relationship of the word, the accepted character
The relevance of the document in which the string appears is calculated, and the retrieval result display unit displays the retrieval result document in advance.
In addition to displaying in the order of the calculated conformance,
The result is associated with one of the stored messages
If the specified conditions are met, display the message further
However, the dependency relation of the word is stored in the message.
If the conditions associated with any of the
A computer-readable recording medium storing a program characterized by causing it to further display a message . 8. The program is stored on the computer.
And The collation result display unit displays the received character string
There are multiple words that are the previously stored words.
In this case, the dependency relation of the word is stored in the stored message.
If the conditions associated with any of the
To make it function to display the message further.
The recording medium according to claim 7, wherein the recording medium is a recording medium. 9. The program in the computer according to claim 9 , wherein the word index section further stores in advance the number of documents in which the word appears, and the collation section stores the accepted character string in advance. 9. If the word is a word, the number of documents in which the character string appears is acquired from the word index unit, and this function is added to the result of the matching, and the record according to claim 7 or 8. Medium.