Duplicate entry detection system and method
US8046372B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jun 6, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/313
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer system and method for determining whether the subject matter described in a received document is substantially similar to the subject matter of other documents in a document corpus, such that the received document can be considered a duplicate document. After receiving a first document, a set of tokens for the first document is generated. A non-fielded relevance search on a token index is executed. The relevance search returns a set of candidate duplicate documents with scores corresponding to each candidate document. For each candidate document with a score above a threshold, filtering is performed on each candidate document to determine whether each candidate document is a true duplicate of the first document. A set of candidate documents with a score above the threshold that were not disqualified as candidate documents is then provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.