INFORMATION ANALYSIS DEVICE, SEARCH SYSTEM, INFORMATION ANALYSIS METHOD, AND INFORMATION ANALYSIS PROGRAM

• US 20100318526A1
• Filed: 01/30/2009
• Published: 12/16/2010
• Est. Priority Date: 01/30/2008
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Ando, Shinichi, Takeda, Toshio, Nakazawa, Satoshi
• Application Number:
  US12/864,780
• Publication Number:
  US 20100318526A1
• Time in Patent Office: Days
• US Class Current: 707/749
• CPC Class Codes: G06F 40/30 Semantic analysis

Abstract

Time-series data corresponding to an input linguistic expression to be analyzed is acquired, a relevant linguistic expression candidate which is highly relevant to the input linguistic expression is generated, time-series data corresponding to the relevant linguistic expression candidate generated is acquired, temporal correlation between the time-series data corresponding to the input linguistic expression and the time-series data corresponding to the relevant linguistic expression candidate is analyzed and a relevance level between the input linguistic expression and the relevant linguistic expression candidate generated is calculated using an analysis result of the time-series data.

Claims

1. An information analysis apparatus comprising:

a target linguistic expression time-series data acquisition unit configured to acquire time-series data corresponding to an input linguistic expression to be analyzed;

a relevant linguistic expression candidate generation unit configured to generate a relevant linguistic expression candidate which is highly relevant to the input linguistic expression;

a relevant linguistic expression candidate time-series data acquisition unit configured to acquire time-series data corresponding to the relevant linguistic expression candidate generated by the relevant linguistic expression candidate generation unit;

a time-series analysis unit configured to analyze temporal correlation between the time-series data acquired by the target linguistic expression time-series data acquisition unit and the time-series data acquired by the relevant linguistic expression candidate time-series data acquisition unit; and

a relevance level calculation unit configured to calculate a relevance level between the input linguistic expression and the relevant linguistic expression candidate generated by the relevant linguistic expression candidate generation unit using an analysis result of the time-series analysis unit.

2. The information analysis apparatus according to claim 1, wherein the relevant linguistic expression candidate generation unit comprises:

a check target document condition selection unit configured to select a condition for extracting a document to be checked for the relevant linguistic expression candidate using text content of an electronic document containing the linguistic expression or meta information attached to a document containing the linguistic expression;

a check target document set acquisition unit configured to acquire a set of electronic documents which satisfy the condition for extracting; and

a characteristic linguistic expression extraction unit configured to extract, as the relevant linguistic expression candidate, a characteristic linguistic expression from the set of electronic documents acquired by the check target document set acquisition unit.

3. The information analysis apparatus according to claim 2, wherein the check target document condition selection unit selects, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document in a same or similar field or an electronic document relates to a same or similar topic as part or all of a set of electronic documents containing the (input) linguistic expression.

4. The information analysis apparatus according to claim 2, wherein the check target document condition selection unit selects, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document to which the electronic document containing the (input) linguistic expression is linked within a given number of hops.

5. The information analysis apparatus according to claim 2, wherein the check target document condition selection unit selects, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document which includes a given value of a text similarity or lower to the electronic document containing the linguistic expression.

6. The information analysis apparatus according to claim 2, wherein the check target document condition selection unit selects, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document which in common in a creator or issuer to part or all of the set of electronic documents containing the linguistic expression.

7. The information analysis apparatus according to claim 1, wherein the relevant linguistic expression candidate generation unit comprises:

a target document set correlation analysis unit configured to determine a linguistic expression which shows up in correlation with the linguistic expression in part or all of the set of electronic documents containing the linguistic expression; and

a limitedly correlated linguistic expression extraction unit configured to extract, as the relevant linguistic expression candidate, using a calculation result of the target document set correlation analysis unit, a linguistic expression showing up in correlation with the linguistic expression with a given value or higher.

8. The information analysis apparatus according to claim 1, wherein the relevant linguistic expression candidate generation unit comprises:

a target document set analytical unit configured to linguistically analyze part or all of the set of electronic documents containing the linguistic expression; and

a relevance suggestive linguistic expression extraction unit configured to extract, as the relevant linguistic expression candidate, a linguistic expression for which relevance to the linguistic expression is suggested by use of an analysis result of the target document set analytical unit.

9. The information analysis apparatus according to claim 1, wherein the relevant linguistic expression candidate generation unit includes:

a target linguistic expression analytical unit configured to linguistically analyze the linguistic expression; and

a contradictory linguistic expression generation unit configured to generate, as the relevant linguistic expression candidate, a linguistic expression which is contradictory to the linguistic expression using an analysis result of the target linguistic expression analytical unit.

10. A search system comprising:

the information analysis apparatus according to claim 1;

a relevant information containing document search unit configured to search, making the relevant linguistic expression output from the information analysis apparatus as a search condition, a plurality of search target documents for a document containing the relevant linguistic expression and having a high relevance level to a target linguistic expression; and

a relevant document output unit configured to output the document searched by the relevant information containing document search unit.

11. An information analysis method comprising:

acquiring time-series data corresponding to an input linguistic expression to be analyzed;

generating relevant linguistic expression candidate which is highly relevant to the input linguistic expression;

acquiring time-series data corresponding to the relevant linguistic expression candidate generated;

analyzing temporal correlation between the time-series data corresponding to the input linguistic expression and the time-series data corresponding to the relevant linguistic expression candidate; and

calculating a relevance level between the linguistic expression and the relevant linguistic expression candidate generated, using a result of analyzing the temporal correlation between the time-series data.

12. The information analysis method according to claim 11, wherein generating relevant linguistic expression candidate includes:

selecting a condition for extracting a document to be checked for the relevant linguistic expression candidate using text content of an electronic document containing the linguistic expression or meta information attached to a document containing the linguistic expression;

acquiring a set of electronic documents which satisfy the condition for extracting; and

extracting, as the relevant linguistic expression candidate, a characteristic linguistic expression from the set of electronic documents acquired.

13. The information analysis method according to claim 12, wherein selecting the condition for extracting includes

selecting, as a condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document in a same or similar field or an electronic document relates to a same or similar topic as part or all of a set of electronic documents containing the linguistic expression.

14. The information analysis method according to claim 12, wherein selecting the condition for extracting includes

selecting, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document to which the electronic document containing the linguistic expression is linked within a given number of hops.

15. The information analysis method according to claim 12, wherein selecting the condition for extracting includes

selecting, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document which includes a given value of a text similarity or lower to the electronic document containing the linguistic expression.

16. The information analysis method according to claim 12, wherein selecting the condition for extracting includes

selecting, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document which in common in a creator or issuer to part or all of the set of electronic documents containing the linguistic expression.

17. The information analysis method according to claim 11, wherein generating a relevant linguistic expression candidate includes:

determining a linguistic expression which shows up in correlation with the linguistic expression in part or all of the set of electronic documents containing the linguistic expression; and

extracting, as the relevant linguistic expression candidate, a linguistic expression showing up in correlation with the linguistic expression with a given value or higher.

18. The information analysis method according to claim 11, wherein generating a relevant linguistic expression candidate includes:

linguistically analyzing part or all of the set of electronic documents containing the linguistic expression; and

extracting, as the relevant linguistic expression candidate, a linguistic expression for which relevance to the linguistic expression is suggested by use of a result of linguistically analyzing.

19. The information analysis method according to claim 12, wherein generating a relevant linguistic expression candidate includes:

linguistically analyzing the linguistic expression; and

generating, as the relevant linguistic expression candidate, a linguistic expression which is contradictory to the linguistic expression using a result linguistically analyzing.

20. A program for information analysis for causing a computer to perform:

acquiring time-series data corresponding to an input linguistic expression to be analyzed;

generating relevant linguistic expression candidate which is highly relevant to the input linguistic expression;

acquiring time-series data corresponding to the relevant linguistic expression candidate generated;

analyzing temporal correlation between the time-series data corresponding to the input linguistic expression and the time-series data corresponding to the relevant linguistic expression candidate; and

calculating a relevance level between the linguistic expression and the relevant linguistic expression candidate generated, using a result of analyzing the temporal correlation between the time-series data.

21. The program for information analysis according to claim 20, wherein

causing the computer to perform generating relevant linguistic expression candidate includes causing the computer to perform:

selecting a condition for extracting a document to be checked for the relevant linguistic expression candidate using text content of an electronic document containing the linguistic expression or meta information attached to a document containing the linguistic expression;

acquiring a set of electronic documents which satisfy the condition for extracting; and

extracting, as the relevant linguistic expression candidate, a characteristic linguistic expression from the set of electronic documents acquired.

22. The program for information analysis according to claim 21, wherein

causing the computer to perform selecting the condition for extracting includes causing the computer to perform

selecting, as a condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document in a same or similar field or an electronic document relates to a same or similar topic as part or all of a set of electronic documents containing the linguistic expression.

23. The program for information analysis according to claim 21,

causing the computer to perform selecting the condition for extracting includes causing the computer to perform

selecting, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document to which the electronic document containing the linguistic expression is linked within a given number of hops.

24. The program for information analysis according to claim 21,

causing the computer to perform selecting the condition for extracting includes causing the computer to perform

selecting, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document which includes a given value of a text similarity or lower to the electronic document containing the linguistic expression.

25. The program for information analysis according to claim 21,

causing the computer to perform selecting the condition for extracting includes causing the computer to perform

selecting, as the condition for extracting a document to be checked for the relevant linguistic expression candidate, whether the document includes an electronic document which in common in a creator or issuer to part or all of the set of electronic documents containing the linguistic expression.

26. The program for information analysis according to claim 20,

causing the computer to perform generating a relevant linguistic expression candidate includes causing the computer to perform:

determining a linguistic expression which shows up in correlation with the linguistic expression in part or all of the set of electronic documents containing the linguistic expression; and

extracting, as the relevant linguistic expression candidate, a linguistic expression showing up in correlation with the linguistic expression with a given value or higher.

27. The program for information analysis according to claim 20,

causing the computer to perform generating a relevant linguistic expression candidate includes:

linguistically analyzing part or all of the set of electronic documents containing the linguistic expression; and

extracting, as the relevant linguistic expression candidate, a linguistic expression for which relevance to the linguistic expression is suggested by use of a result of linguistically analyzing.

28. The program for information analysis according to claim 20,

causing the computer to perform generating a relevant linguistic expression candidate includes causing the computer to perform:

linguistically analyzing the linguistic expression; and

generating, as the relevant linguistic expression candidate, a linguistic expression which is contradictory to the linguistic expression using a result linguistically analyzing.