Information retrieving system, information retrieving method, and information retrieving program

• US 20050004902A1
• Filed: 07/02/2004
• Published: 01/06/2005
• Est. Priority Date: 07/02/2003
• Status: Active Grant

• Current Assignee: OKI Electric Industry Company Limited
• Original Assignee: OKI Electric Industry Company Limited
• Inventors: Torigoe, Shin, Ikeno, Atsushi
• Granted Patent: US 7,359,896 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: G06F 16/9538 Presentation of query results
• CPC Class Codes: Y10S 707/99934 Query formulation, input preparation, or translation

Abstract

In this invention, a database in which a keyword and an attribute of the keyword are stored together with a document ID for discriminating a source document is arranged, at least one keyword and/or retrieval key constituted by attribute information which is not specified as a keyword is input, and the database is retrieved on the basis of the keyword and/or the attribute of the attribute information. As a result, the source document can be specified by the keyword input as the retrieval key, and retrieval intention is reflected by the attribute information input as the retrieval key.

Claims

1. An information retrieving system comprising:

a database in which a keyword and an attribute of the keyword are stored together with a document ID for discriminating a source document;

a retrieval key input section which captures at least one keyword and/or retrieval key constituted by attribute information which is not specified as a keyword;

a retrieval section which retrieves information from the database on the basis of the keyword and/or the attribute of the attribute information captured by the retrieval key input section; and

an output section which outputs a retrieval result obtained by the retrieval section.

2. An information retrieving system according to claim 1, further comprising:

a document input section which captures an electronic document serving as a source of data to be registered in the database;

a keyword extraction section which extracts a keyword from the electronic document captured by the document input section;

an attribute giving section which gives an attribute to the keyword extracted by the keyword extraction section; and

a registration section which registers a correspondence of the keyword extracted by the keyword extraction section to the attribute given by the attribute giving section in the database together with a document ID unique to the electronic document.

3. The information retrieving system according to claim 1, wherein the attribute information to be captured by the retrieval key input section has the data format as that of the keyword captured by the retrieval key input section,

an attribute conversion section which converts the attribute information into an attribute is further arranged, and

the retrieval section uses the attribute converted by the attribute conversion section in retrieval.

4. The information retrieving system according to claim 3, wherein the retrieval key input section captures a character string which is subjected to an escape code process as a keyword, and captures the character string itself which is not subjected to an escape code process as attribute information, when the character string can serve as either a keyword or attribute information.

5. The information retrieving system according to claim 1, wherein the retrieval section includes a keyword, to which a document ID of document having the same keyword as all the keywords captured by the retrieval key input section is given in the database, and which also has the same attribute as that of the attribute information captured by the retrieval key input section, in a retrieval result.

6. The information retrieving system according to claim 1, wherein an attribute responding to a keyword in the database have, in addition to an attribute name, appearing position information in a source document as an attribute value, and

when the retrieval result includes a plurality of keywords, the retrieval section orders the plurality of keywords included in the retrieval result on the basis of the attribute value of the keyword in the database and the attribute value of the same keyword in the database as the keyword captured by the retrieval key input section.

7. An information retrieving method comprising:

a step of using a database in which a keyword and an attribute of the keyword are stored together with a document ID for discriminating a source document;

a retrieval key input step of capturing at least one keyword and/or retrieval key constituted by attribute information which is not specified as a keyword;

a retrieval step of retrieving information from the database on the basis of the keyword and/or the attribute of the attribute information captured in the retrieval key input step; and

an output step of outputting a retrieval result obtained in the retrieval step.

8. The information retrieving method according to claim 7, further comprising:

a document input step of capturing an electronic document serving as a source of data to be registered in the database;

a keyword extraction step of extracting a keyword from the electronic document captured in the document input step;

an attribute giving step of giving an attribute to the keyword extracted in the keyword extraction step; and

a registration step of registering a correspondence of the keyword extracted in the keyword extraction step to the attribute given in the attribute giving step in the database together with a document ID unique to the electronic document.

9. The information retrieving method according to claim 7, wherein the attribute information to be captured in the retrieval key input step has the data format as that of the keyword captured in the retrieval key input step,

an attribute conversion step of converting the attribute information into an attribute is further established, and

the retrieval step uses the attribute converted in the attribute conversion step in retrieval.

10. The information retrieving method according to claim 9, wherein the retrieval key input step captures a character string which is subjected to an escape code process as a keyword, and captures the character string itself which is not subjected to an escape code process as attribute information, when the character string can serve as either a keyword or attribute information.

11. The information retrieving method according to claim 7, wherein the retrieval step includes a keyword, to which a document ID of document having the same keyword as all the keywords captured in the retrieval key input step is given in the database, and which also has the same attribute as that of the attribute information captured by the retrieval key input section, in a retrieval result.

12. The information retrieving method according to claim 7, wherein an attribute responding to a keyword in the database have, in addition to an attribute name, appearing position information in a source document as an attribute value, and

when the retrieval result includes a plurality of keywords, the retrieval step orders the plurality of keywords included in the retrieval result on the basis of the attribute value of the keyword in the database and the attribute value of the same keyword in the database as the keyword captured in the retrieval key input step.

13. An information retrieving program wherein a computer executes an information retrieving method including:

a step of using a database in which a keyword and an attribute of the keyword are stored together with a document ID for discriminating a source document;

a retrieval key input step of capturing at least one keyword and/or retrieval key constituted by attribute information which is not specified as a keyword;

a retrieval step of retrieving information from the database on the basis of the keyword and/or the attribute of the attribute information captured in the retrieval key input step; and

an output step of outputting a retrieval result obtained in the retrieval step.

14. The information retrieving program according to claim 13, wherein the computer executes the information retrieving method further including:

a document input step of capturing an electronic document serving as a source of data to be registered in the database;

a keyword extraction step of extracting a keyword from the electronic document captured in the document input step;

an attribute giving step of giving an attribute to the keyword extracted in the keyword extraction step; and

a registration step of registering a correspondence of the keyword extracted in the keyword extraction step to the attribute given in the attribute giving step in the database together with a document ID unique to the electronic document.

15. The information retrieving program according to claim 13, wherein the computer executes the information retrieving method in which

the attribute information to be captured in the retrieval key input step has the data format as that of the keyword captured in the retrieval key input step,

an attribute conversion step of converting the attribute information into an attribute is further established, and

the retrieval step uses the attribute converted in the attribute conversion step in retrieval.

16. The information retrieving program according to claim 15, wherein the computer executes the information retrieving method in which the retrieval key input step captures a character string which is subjected to an escape code process as a keyword, and captures the character string itself which is not subjected to an escape code process as attribute information, when the character string can serve as either a keyword or attribute information.

17. The information retrieving program according to claim 13, wherein the computer executes the information retrieving method according to any one of claim 15, in which the retrieval step includes a keyword, to which a document ID of document having the same keyword as all the keywords captured in the retrieval key input step is given in the database, and which also has the same attribute as that of the attribute information captured by the retrieval key input section, in a retrieval result.

18. The information retrieving program according to claim 13, wherein the computer executes the information retrieving method in which an attribute responding to a keyword in the database have, in addition to an attribute name, appearing position information in a source document as an attribute value, and

when the retrieval result includes a plurality of keywords, the retrieval step orders the plurality of keywords included in the retrieval result on the basis of the attribute value of the keyword in the database and the attribute value of the same keyword in the database as the keyword captured in the retrieval key input step.

19. The information retrieving program according to claim 13, wherein the steps are described in a code which can be executed by a computer, and the data of the database is also described in a code which can be accessed by the computer.