Text mining based on document structure information extraction
US12277389B2 · kind B2 · utility
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Key dates
| Filing date | May 10, 2021 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | May 14, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Frequent sequences extracted from a set of documents according to a common rule are obtained. Based on comparing occurrence frequencies of various sequences, confidence of the first frequent sequence being a label expression representing a document part in a target document is evaluated. Keywords are extracted from the target document based on evaluation of the confidence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.