Keyword extraction method, apparatus and medium
US11630954B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Jan 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/247
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keyword extraction method includes: extracting candidate words from an original document to form a first word set; acquiring a first association degree between each first word thereof and the original document, and determining a second word set according to the first association degree; for each second word in the second word set, inquiring, in a word association topology, at least one node word satisfying a condition of association with the second word and forming a third word set, the word association topology indicating an association relation among multiple node words in a predetermined field; and determining a union set of the second and third word sets, acquiring a second association degree between each candidate keyword in the union set and the original document, and selecting, according to the second association degree, at least one candidate keyword from the union set, to form a keyword set of the original document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.