Semantic search system using semantic ranking scheme
US8402018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2010 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Sep 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/3344
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semantic search system using a semantic ranking scheme including: an ontology analyzer analyzing ontology data related to a search target to determine a weight value of each property according to a weighing method for property; a semantic path extractor extracting all the semantic paths between resources and query keywords and determining a weight value of each extracted semantic path according to the semantic path weight value determination scheme by using the weight value of each property; a relevant resource searcher traversing an instance graph of ontology based on a semantic path having a pre-set length and weight value of more than an expectation level to search resources that have a semantic relationship with the query keywords and are declared as a type presented in the query; and a semantic relevance ranker selecting a top-k results having the highest rank from among the candidate results extracted by the relevant resource researcher by using a relevance scoring function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.