Selection of superwords based on criteria relevant to both speech recognition and understanding
First Claim
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1. A method for determining superwords and meaningful phases, comprising the steps of:
- determining superwords from a set of generated candidate phrases contained in a database of observed sequences of words, symbols and/or sounds, the database having a perplexity value based on a language model;
determining meaningful phrases based on commonality measurements; and
incorporating the determined meaningful phrases from the database into the language model.
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Abstract
This invention is directed to the selection of superwords based on a criterion relevant to speech recognition and understanding. Superwords are used to refer to those word combinations which are so often spoken that are recognized or should have models for such combinations reflected in its grammar. The selected superwords are placed in a lexicon is then used by a speech recognizer to improve recognition of input speech utterances for the proper routing of a user'"'"'s task objectives.
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Citations
26 Claims
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1. A method for determining superwords and meaningful phases, comprising the steps of:
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determining superwords from a set of generated candidate phrases contained in a database of observed sequences of words, symbols and/or sounds, the database having a perplexity value based on a language model; determining meaningful phrases based on commonality measurements; and incorporating the determined meaningful phrases from the database into the language model. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus that determines superwords and meaningful phases, comprising:
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a database of observed sequences of words, symbols and/or sounds containing a generated set of candidate phrases, the database having a perplexity value based on a language model; superword selecting means for selecting superwords, the selected superwords being incorporated from the database into the language model; and meaningful phrase selecting means for selecting meaningful phrases based on commonality measurements, the selected meaningful phrases being incorporated from the database into the language model. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus that determines superwords and meaningful phases, comprising:
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a database of observed sequences of words, symbols and/or sounds containing a generated set of candidate phrases, the database having a perplexity value based on a language model; a superword selector that selects superwords, the superword selector incorporating the selected superwords from the database into the language model; and a meaningful phrase selector that selects meaningful phrases based on commonality measurements, the meaningful phrase selector incorporating the selected meaningful phrases from the database into the language model. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification