Synonym extraction device, synonym extraction method, and synonym extraction program
US11900055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2020 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Feb 9, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/53
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A synonym extraction apparatus determines, for compound words included in the document, that types of nouns constituting the compound word are each a Sahen-noun or another noun type to determine a pattern of a sequence of the types of the nouns constituting the compound word, extracts a group of compound words having an identical pattern of the sequence of the types, extracts compound words having an identical leading or ending word from among them, and creates, for a group of compound words having the identical pattern of the sequence of the nouns and the identical leading or ending word, a co-occurrence vector having, as a component, a noun appearing in the same sentence as the corresponding compound word, and outputs, as synonyms, a group of compound words having a degree of similarity between the co-occurrence vectors of the compound words equal to or greater than a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.