Multi-stage query processing
US10963497B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2016 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Oct 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/3344
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query parsing system uses a multi-stage process to parse the text of incoming queries before attempting to answer the queries. The multi-stage configuration involves a first trained classifier to determine the query type, or intent, of the text and a plurality of second trained classifiers, where each of the second trained classifiers is configured particularly for one specific respective query type. During query processing, the first trained classifier is used on the text to identify the query type. A second trained classifier for that specific identified query type is then found and used on the text to identify what strings in the text correspond to specific entities needed to resolve the query. The identified text strings and query type are then placed into a form understandable by a knowledge base and sent to the knowledge base for resolution. The classifiers may be trained using queries and answers previously processed by the knowledge base using a rules/template resolution process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.