Terms for query expansion using unstructured data
US10055485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2014 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jul 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/3338
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processor determines a set of terms frequently occurring within unstructured data associated with criteria of a query. The processor analyzes the unstructured data to match a term of the set of terms, to criteria of the query. Matching terms are retained and unmatched terms are checked for semantic similarity to terms of the criteria to determine an inferred match of the term of the unstructured data to terms of the criteria of the query. In response to determining an inferred match, the inferred match term is added to the second set of terms, and the processor compares the second set of terms to the terms of the criteria of the query, and removes matching terms, resulting in a third set of terms added to the set of criteria terms of the query. The additional query terms will enhance the recall without diluting the precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.