DocumentCode :
3131745
Title :
A reranking approach for recognition and classification of speech input in conversational dialogue systems
Author :
Morbini, F. ; Audhkhasi, Kartik ; Artstein, R. ; Van Segbroeck, Maarten ; Sagae, K. ; Georgiou, Pantelis ; Traum, D.R. ; Narayanan, Shrikanth
Author_Institution :
Univ. of Southern California Los Angeles, Los Angeles, CA, USA
fYear :
2012
fDate :
2-5 Dec. 2012
Firstpage :
49
Lastpage :
54
Abstract :
We address the challenge of interpreting spoken input in a conversational dialogue system with an approach that aims to exploit the close relationship between the tasks of speech recognition and language understanding through joint modeling of these two tasks. Instead of using a standard pipeline approach where the output of a speech recognizer is the input of a language understanding module, we merge multiple speech recognition and utterance classification hypotheses into one list to be processed by a joint reranking model. We obtain substantially improved performance in language understanding in experiments with thousands of user utterances collected from a deployed spoken dialogue system.
Keywords :
interactive systems; natural language processing; pattern classification; speaker recognition; conversational dialogue system; language understanding module; natural language processing; reranking model; speech classification; speech recognition; spoken dialogue system; spoken recognition; utterance classification hypotheses; Accuracy; Engines; Google; Pipelines; Speech; Speech recognition; Training; Automatic speech recognition; Interactive systems; Natural language processing; Supervised learning;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Spoken Language Technology Workshop (SLT), 2012 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4673-5125-6
Electronic_ISBN :
978-1-4673-5124-9
Type :
conf
DOI :
10.1109/SLT.2012.6424196
Filename :
6424196
Link To Document :
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