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公开(公告)号：AT276568T
公开(公告)日：2004-10-15
申请号：AT02700489
申请日：2002-02-28
Applicant: IBM
Inventor： EPSTEIN MARK EDWARD
Abstract: The invention disclosed herein concerns a method of converting speech to text using a hierarchy of contextual models. The hierarchy of contextual models can be statistically smoothed into a language model. The method can include processing text with a plurality of contextual models. Each one of the plurality of contextual models can correspond to a node in a hierarchy of the plurality of contextual models. Also included can be identifying at least one of the contextual models relating to the text and processing subsequent user spoken utterances with the identified at least one contextual model.
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公开(公告)号：CA2482514A1
公开(公告)日：2003-11-20
申请号：CA2482514
申请日：2003-04-10
Applicant: IBM
Inventor： WARD ROBERT TODD , JONES SHARON BARBARA , EPSTEIN MARK EDWARD
Abstract: A method of developing natural language understanding (NLU) applications includes determining NLU interpretation information from an NLU training corpus of text using a multi-pass processing technique. The alteration of on e pass automatically can alter an input for a subsequent pass. The NLU interpretation information can specify an interpretation of at least part of the NLU training corpus of text. The NLU interpretation information is store d in a database, and selected items of the NLU interpretation information can be presented in a graphical editor. User specified edits also are received in t he graphical editor.
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公开(公告)号：AU2003222602A8
公开(公告)日：2003-11-11
申请号：AU2003222602
申请日：2003-04-10
Applicant: IBM
Inventor： WARD ROBERT TODD , JONES SHARON BARBARA , EPSTEIN MARK EDWARD
Abstract: A method of developing natural language understanding (NLU) applications can include determining NLU interpretation information from an NLU training corpus of text using a multi-pass processing technique. The alteration of one pass automatically can alter an input for a subsequent pass. The NLU interpretation information can specify an interpretation of at least part of the NLU training corpus of text. The NLU interpretation information can be stored in a database, and selected items of the NLU interpretation information can be presented in a graphical editor. User specified edits also can be received in the graphical editor.
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公开(公告)号：DE69423692D1
公开(公告)日：2000-05-04
申请号：DE69423692
申请日：1994-09-08
Applicant: IBM
Inventor： EPSTEIN MARK EDWARD , GOPALAKRISHNAN PONANI S , NAHAMOO DAVID , PICHENY MICHAEL ALAN , SEDIVY JAN
Abstract: A speech coding apparatus and method uses classification rules to code an utterance while consuming fewer computing resources. The value of at least one feature of an utterance is measured during each of a series of successive time intervals to produce a series of feature vector signals representing the feature values. Classification rules map each feature vector signal from a set of all possible feature vector signals to exactly one of at least two different classes of prototype vector signals. Each class contains a plurality of prototype vector signals. According to the classification rules, a first feature vector signal is mapped to a first class of prototype vector signals. The closeness of the feature value of the first feature vector signal is compared to the parameter values of only the prototype vector signals in the first class of prototype vector signals to obtain prototype match scores for the first feature vector signal and each prototype vector signal in the first class. At least the identification value of at least the prototype vector signal having the best prototype match score is output as a coded utterance representation signal of the first feature vector signal.
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