Detecting query-specific duplicate documents
US6615209B1 · kind B1 · utility
268Cited by
2References
38Claims
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Key dates
| Filing date | Oct 6, 2000 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
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.