Document matching engine using asymmetric signature generation
US7860853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Feb 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/9538
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An automated method of matching an input document to a set of documents from a document repository. A signature database is stored, the signature database including a document identifier and signatures generated by a first signature generator for each of the set of documents. The input document is received and signatures are generated for the input document using a second signature generator, and the signature database is searched using the signatures generated for the input document. The first and second signature generators are configured such that different numbers of signatures are generated for a same document. Other embodiments, aspects and features are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.