Prediction of query difficulty for a generic search engine
US7406462B2 · kind B2 · utility
3Cited by
1References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2004 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Dec 10, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99933
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query difficulty prediction unit includes a query difficulty predictor to determine the extent of overlap between query documents received from a search engine operating on an input query and sub-query documents received from the search engine operating on sub-queries of the input query. The unit generates a query difficulty prediction from the extent of overlap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.