Patent · US Active

Document expansion in speech retrieval

US7761298B1 · kind B1 · utility

7Cited by

8References

16Claims

0Family size

Assignee

AT&T Intellectual Property I, L.P. · US

Inventors

Fernando Pereira · Palo Alto, US
Amitabh Singhal · Palo Alto, US

Key dates

Filing date	Jan 14, 2008
Grant date	Jul 20, 2010
Priority date	—
Expiry date	Jan 14, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/685
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Methods of document expansion for a speech retrieval document by a recognizer. A database of vectors of automatic transcriptions of documents is accessed and the vectors are truncated by removing all terms that are not recognizable by the recognizer to create truncated vectors. Terms in the vectors are then weighted to associate the truncated vectors with the untruncated vectors. Terms not recognized by the recognizer are then added back to the weighted, truncated vectors. The retrieval effectiveness may then be measured.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.