Method and apparatus for generating decision tree questions for speech processing
US7788096B2 · kind B2 · utility
8Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2002 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/197
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention automatically builds question sets for a decision tree. Under the invention, mutual information is used to cluster tokens, representing either phones or letters. Each cluster is formed so as to limit the loss in mutual information in a set of training data caused by the formation of the cluster. The resulting sets of clusters represent questions that can be used at the nodes of the decision tree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.