System and method for query expansion using knowledge base and statistical methods in electronic search
US10296637B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Apr 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/3338
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, devices, and methods include generating, for at least one search term of a query, a first expanded set of search terms based on at least one related term of the at least one search term obtained from a knowledge base, generating a second expanded set of search terms by applying a statistical model to the search terms of the first expanded set based on terms included in an electronic document corpus stored in an electronic data storage, and generating a third expanded set of search terms based on search terms in the first and second expanded sets. For each search term of the third expanded set, a term score is determined based on occurrence of the search term in the electronic document. The term scores are combined to create a document score for the electronic document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.