05797123 is referenced by 165 patents and cites 5 patents.

A key-phrase detection and verification method that can be advantageously used to realize understanding of flexible (i.e., unconstrained) speech. A "multiple pass" procedure is applied to a spoken utterance comprising a sequence of words (i.e., a "sentence"). First, a plurality of key-phrases are detected (i.e., recognized) based on a set of phrase sub-grammars which may, for example, be specific to the state of the dialogue. These key-phrases are then verified by assigning confidence measures thereto and comparing these confidence measures to a threshold, resulting in a set of verified key-phrase candidates. Next, the verified key-phrase candidates are connected into sentence hypotheses based upon the confidence measures and predetermined (e.g., task-specific) semantic information. And, finally, one or more of these sentence hypotheses are verified to produce a verified sentence hypothesis and, from that, a resultant understanding of the spoken utterance.

Title
Method of key-phase detection and verification for flexible speech understanding
Application Number
724413
Publication Number
5797123
Application Date
December 20, 1996
Publication Date
August 18, 1998
Inventor
Chin Hui Lee
New Providence
NJ, US
Tatsuya Kawahara
Kyoto
JP
Biing Hwang Juang
Warren
NJ, US
Wu Chou
Berkeley Heights
NJ, US
Agent
Kenneth M Brown
Assignee
Lucent Technologies
NJ, US
IPC
G10L 9/00
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