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PROGRESS IN MEETING RECOGNITION: THE ICSI-SRI-UW SPRING 2004 EVALUATION SYSTEM   
摘  要:   We describe the ICSI-SRI-UW team's entry in the Spring 2004 NIST Meeting Recognition Evaluation. The system was derived from SRI's 5xRT Conversational Telephone Speech (CTS) recognizer by adapting CTS acoustic and lan- guage models to the Meeting domain, adding noise reduc- tion and delay-sum array processing for far-field recogni- tion, and postprocessing for cross-talk suppression. A mod- ified MAP adaptation procedure was developed to make best use of discriminatively trained (MMIE) prior mod- els. These meeting-specific changes yielded an overall 9% and 22% relative improvement as compared to the original CTS system, and 16% and 29% relative improvement as compared to our 2002 Meeting Evaluation system, for the individual-headset and multiple-distant microphones con- ditions, respectively.
发  表:   International Conference on Acoustics, Speech, and Signal Processing  2004

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