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Speech & natural language publications September 1, 1997

Modeling Linguistic Segment and Turn Boundaries for N-best Rescoring of Spontaneous Speech

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Stolcke, A. (1997). Modeling linguistic segment and turn boundaries for n-best rescoring of spontaneous speech. In EUROSPEECH.

Abstract

Language modeling, especially for spontaneous speech, often suffers from a mismatch of utterance segmentations between training and test conditions. In particular, training often uses linguistically-based segments, whereas testing occurs on acoustically determined segments, resulting in degraded performance. We present an N-best rescoring algorithm that removes the effect of segmentation mismatch. Furthermore, we show that explicit language modeling of hidden linguistic segment boundaries is improved by including turn-boundary events in the model.

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