Automatic keyphrase extraction from text using the cross-entropy method
US11269942B2 · kind B2 · utility
1Cited by
3References
17Claims
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Key dates
| Filing date | Oct 10, 2019 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Feb 12, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/284
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Automated keyphrase extraction from a digital text document. A pool of candidate keyphrases of the digital text document is created. A cross-entropy method is then employed to compute a set of output keyphrases out of the pool of candidate keyphrases, by iteratively optimizing an objective function that is configured to cause the set of output keyphrases to be descriptive of one or more main topics discussed in the digital text document. The set of output keyphrases may be used for at least one of: text summarization, text categorization, opinion mining, and document indexing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.