Field weighting in text searching
US7584221B2 · kind B2 · utility
47Cited by
104References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2004 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Jan 13, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99952
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A field-weighted search combines statistical information for each term across document fields in a suitably weighted fashion. Both field-specific term frequencies and field and document lengths are considered to obtain a field-weighted document weight for each query term. Each field-weighted document weight can then be combined in order to generate a field-weighted document score that is responsive to the overall query.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.