Extracting and grouping opinions from text documents
US7865354B2 · kind B2 · utility
38Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2003 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Sep 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Opinions about a topic are extracted from a corpus of text documents. Opinions are extracted based on rules defining regular expressions for parts-of-speech tags. Opinions are grouped based on their semantic orientation as favorable, unfavorable or neutral. A balanced and accurate assessment of sentiment towards a topic can thus be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.