Systems and methods for query expansion
US7287025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2003 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Sep 16, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99935
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for query expansion are described. In one aspect, new terms are extracted from a newly submitted query. Terms to expand the new terms are identified to a relevant document list. The expansion term are identified at least in part on the new terms and probabilistic correlations from information in a query log. The query log information includes one or more query terms and a corresponding set of document identifiers (IDs). The query terms were previously submitted to a search engine. The document IDs represent each document selected from a list generated by the search engine in response to searching for information relevant to corresponding ones of the query terms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.