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- W99997047 abstract "We describe the AT&T recognition system used in the DARPA Large Vocabulary Conversational Speech Recognition (LVCSR98) evaluation. It is based on multi-pass rescoring of weighted Finite State Machines (FSMs) using progressively more accurate acoustic models. Acoustic models used in the system are all gender independent. They are based on three state contextdependent hidden Markov models using Gaussian mixtures. The recognition paradigm uses the baseline system to generate a set of word lattices. Subsequent passes use Vocal Tract Normalization (VTN), Maximum Likelihood Linear Regression (MLLR) adaptation and ROVER to further refine the recognition output. All the acoustic models (except for one of the additional models used in the ROVER experiments) employed models of alternative pronunciations to improve recognition performance. The overall recognition word error rate on the LVCSR-98 evaluation set was 44.1 %." @default.
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- W99997047 modified "2023-09-23" @default.
- W99997047 title "The AT&t large vocabulary conversational speech recognition system." @default.
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