Contextual filtering

Details Contextual filtering Contextual filtering

2008-05-27

2008-05-27

McFadden, Susan (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

Reexamination Certificate

active

07379870

ABSTRACT:
The present invention relates to techniques for contextual filtering for improving an output of a speech recognizer. The techniques comprise receiving a representation of a speech utterance into a shallow parser component in the form of a first word lattice including a set of potential language matches for the utterance, where the language matches include at least one word; the parser component operative for receiving and analyzing the first word lattice to produce a second word lattice, and including a filter that assigns a probability match for a potential word match in relation to another potential word match in the utterance based on a particular filter-specific criteria; and outputting the probability matches from the shallow parser component as a portion of a second word lattice for further processing to determine most likely combinations of words present in the speech utterance.

REFERENCES:
patent: 6321372 (2001-11-01), Poirier et al.
patent: 6446035 (2002-09-01), Grefenstette et al.
patent: 6678677 (2004-01-01), Roux et al.
patent: 6859771 (2005-02-01), Zun et al.

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