Question answering over structured content on the web
US7873624B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2005 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jul 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/243
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Structured content and associated metadata from the Web are leveraged to provide specific answer string responses to user questions. The structured content can also be indexed at crawl-time to facilitate searching of the content at search-time. Ranking techniques can also be employed to facilitate in providing an optimum answer string and/or a top K list of answer strings for a query. Ranking can be based on trainable algorithms that utilize feature vectors for candidate answer strings. In one instance, at crawl-time, structured content is indexed and automatically associated with metadata relating to the structured content and the source web page. At search-time, candidate indexed structured content is then utilized to extract an appropriate answer string in response to a user query.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.