Query expansion
US9317550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2013 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Mar 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/951
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides example query expansion methods and systems. A query input by a user is received. A normalized query of the query is determined according to the query. The normalized query is used as an expansion term of the query to implement query expansion. For example, session information in a search log of the user is obtained. All queries appearing in a single session are obtained and a number of votes for each query is calculated or counted. A vote similarity between a single query and a target query is determined and a correlation degree between the single query and the target query is determined according to the vote similarity. A normalized query of the target query is determined according to the correlation degree. The present techniques accurately expand queries and reduce query times, thereby improving system response speed and processing efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.