Detecting query-specific duplicate documents
US7779002B1 · kind B1 · utility
61Cited by
9References
20Claims
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Key dates
| Filing date | Jun 24, 2003 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | May 19, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99937
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved duplicate detection technique that uses query-relevant information to limit the portion(s) of documents to be compared for similarity is described. Before comparing two documents for similarity, the content of these documents may be condensed based on the query. In one embodiment, query-relevant information or text (also referred to as “snippets”) is extracted from the documents and only the extracted snippets, rather than the entire documents, are compared for purposes of determining similarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.