Method for generating morphemes

Details Method for generating morphemes Method for generating morphemes

2000-10-18

2004-01-20

Abebe, Daniel (Department: 2655)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S245000, C704S257000

Reexamination Certificate

active

06681206

ABSTRACT:

TECHNICAL FIELD
The invention relates to automated systems for communication recognition and understanding.
BACKGROUND OF THE INVENTION
Conventional methods for constructing spoken language systems involve collecting and annotating large speech corpora for a task. This speech is manually transcribed and each utterance is then semantically labeled. The resultant database is exploited to train stochastic language models for recognition and understanding. These models are further adapted for different dialog states. Examples of such methods are shown in U.S. Pat. Nos. 5,675,707, 5,860,063 and 6,044,337, and U.S. patent application Ser. Nos. 08/943,944, filed Oct. 3, 1997, and 09/217,635, filed Dec. 21, 1998, each of which is incorporated by reference herein in its entirety.
This transcription and labeling process is a major bottleneck in new application development and refinement of existing ones. For incremental training of a deployed natural spoken dialog system, current technology would potentially require transcribing millions of transactions. This process is both time-consuming and prohibitively expensive.
SUMMARY OF THE INVENTION
The invention concerns a method of generating morphemes for speech recognition and understanding. The method may include receiving training speech, selecting candidate sub-morphemes from the training speech, selecting salient sub-morphemes from the candidate sub-morphemes based on salience measurements, and clustering the salient sub-morphemes based on semantic and syntactic similarities into morphemes.
The morphemes may be acoustic and/or non-acoustic. The sub-morphemes may represent any sub-unit of communication including phones, phone-phrases, grammars, diphones, words, gestures, tablet strokes, body movements, mouse clicks, etc. The training speech may be verbal, non-verbal, a combination of verbal and non-verbal, or multimodal.


REFERENCES:
patent: 5675707 (1997-10-01), Gorin et al.
patent: 5794193 (1998-08-01), Gorin
patent: 5860063 (1999-01-01), Gorin et al.
patent: 6021384 (2000-02-01), Gorin et al.
patent: 6044337 (2000-03-01), Gorin et al.
patent: 6233553 (2001-05-01), Contolini et al.
patent: 6317707 (2001-11-01), Bangalore et al.

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