Decreasing the fragility of duplicate document detecting algorithms
US7624274B1 · kind B1 · utility
46Cited by
3References
18Claims
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Key dates
| Filing date | Dec 21, 2004 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Jul 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L51/212
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a signature-based duplicate detection system, multiple different lexicons are used to generate a signature for a document that comprises multiple sub-signatures. The signature of an e-mail or other document may be defined as the set of signatures generated based on the multiple different lexicons. When a collection of sub-signatures is used as a document's signature, two documents may be considered as being duplicates when a sub-signature generated based on a particular lexicon in the collection for the first document matches a signature generated based on the same lexicon in the collection for the second document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.