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Using information above the word level for automatic speech recognition

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King_thesis1998.pdf (57.86Mb)
Date
1998
Author
King, Simon Alistair
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Abstract
This thesis introduces a general method for using information at the utterance level and across utterances for automatic speech recognition. The method involves classification of utterances into types. Using constraints at the utterance level via this classification method allows information sources to be exploited which cannot necessarily be used directly for word recognition. The classification power of three sources of information is investigated: the language model in the speech recogniser, dialogue context and intonation. The method is applied to a challenging task: the recognition of spontaneous dialogue speech. The results show success in automatic utterance type classification, and subsequent word error rate reduction over a baseline system, when all three information sources are probabilistically combined.
URI
http://hdl.handle.net/1842/10380
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  • Linguistics and English Language PhD thesis collection

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