Information retrieval apparatus
US7725486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2006 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Nov 21, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99936
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information retrieval apparatus using a preference-based association dictionary, having words stored therein that are dynamically changed according to user's preferences, and using a general association dictionary storing a relationship between keywords included in a database. The apparatus includes: a matching unit which calculates a degree of matching between a search condition inputted from an input unit and a profile; a generation unit which obtains (i) one or more related words from a general association dictionary in a case where the matching degree is smaller than a predetermined threshold, and (ii) one or more related words from a preference-based association dictionary in a case where the matching degree is greater than the predetermined threshold; and a retrieval unit which retrieves information that meets the generated search condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.