Large Vocabulary Continuous Speech Recognition - Berlin Chen
Large Vocabulary Continuous Speech Recognition - Berlin Chen
Large Vocabulary Continuous Speech Recognition - Berlin Chen
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Word Graph Rescoring (1/6)• Tree-copy search with a higher order (trigram, fourgram,etc.) language model (LM) will be very time-consuming andimpractical• A word graph provides word alternatives in regions of thespeech signal, where the ambiguity about the actual spokenwords in high– Decouple the acoustic recognition (matching) and language modelapplication• Such that more complicated long-span language models (suchas PLSA, LSA, Trigger-based LMs, etc.) can be applied in theword graph rescoring process<strong>Speech</strong> – <strong>Berlin</strong> <strong>Chen</strong> 39
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