Document expansion in speech retrieval

Details Document expansion in speech retrieval Document expansion in speech retrieval

2008-07-01

2008-07-01

Harper, V. Paul (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

C704S007000, C704S270100

Reexamination Certificate

active

07395207

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.

REFERENCES:
patent: 5559940 (1996-09-01), Hutson
patent: 5950189 (1999-09-01), Cohen et al.
Choi et al. “An Overview of the AT&T Spoken Document Retrieval” Feb. 1998, Proceedings of the Broadcast News Transcription and Understanding Workshop, pp. 182-190.
Singhal et al. “AT&T at TREC-7” in Proceedings of the Seventh Text REtrieval Conference, pp. 239-252, Jul. 1999.

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