| US 7,542,966 B2 | ||
| Method and system for retrieving documents with spoken queries | ||
| Peter P. Wolf, Winchester, Mass. (US); Joseph K. Woelfel, Watertown, Mass. (US); and Bhiksha Ramakrishnan, Watertown, Mass. (US) | ||
| Assigned to Mitsubishi Electric Research Laboratories, Inc., Cambridge, Mass. (US) | ||
| Filed on Feb. 25, 2005, as Appl. No. 11/67,165. | ||
| Application 11/067165 is a continuation in part of application No. 10/132753, filed on Apr. 25, 2002, granted, now 6,877,001. | ||
| Prior Publication US 2005/0149516 A1, Jul. 07, 2005 | ||
| Int. Cl. G06F 17/30 (2006.01) | ||
| U.S. Cl. 707—3 | 13 Claims |
| 1. A computer implemented method for indexing and retrieving documents stored in a database, comprising the steps of:
extracting a document feature vector from each of a plurality of documents;
indexing each of the plurality of documents according the associated document feature vector;
converting, using a processor, a spoken query to an intermediate representation representing possible sequential combinations
of terms in the spoken query, the intermediate representation is selected from a group consisting of a lattice of terms, an
n-best list, or combination thereof;
generating a query certainty vector from the intermediate representation; and
comparing the query certainty vector to each of the document feature vectors to retrieve a ranked result set of documents.
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