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- W2479499361 abstract "Levinson, Juang and Sondhi (1986), and Mak, Bocchieri, and E. Barnard (see Proceedings of the IEEE Automatic Speech Recognition and Understanding Workshop, 1997) presented novel subspace distribution clustering hidden Markov models (SDCHMMs) which can be converted from continuous density hidden Markov models (CDHMMs) by clustering subspace Gaussians in each stream over all models. Though such model conversion is simple and runs fast, it has two drawbacks: (1) it does not take advantage of the fewer model parameters in SDCHMMs-theoretically SDCHMMs may be trained with smaller amount of data; and, (2) it involves two separate optimization steps (first training CDHMMs, then clustering subspace Gaussians) and the resulting SDCHMMs are not guaranteed to be optimal. We show how SDCHMMs may be trained directly from less speech data if we have a priori knowledge of their architecture. On the ATIS task, a speaker-independent, context-independent (CI) 20-stream SDCHMM system trained using our novel SDCHMM reestimation algorithm with only 8 minutes of speech performs as well as a CDHMM system trained using conventional CDHMM reestimation algorithm with 105 minutes of speech." @default.
- W2479499361 created "2016-08-23" @default.
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- W2479499361 date "2002-11-27" @default.
- W2479499361 modified "2023-09-28" @default.
- W2479499361 title "Training of subspace distribution clustering hidden Markov model" @default.
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- W2479499361 doi "https://doi.org/10.1109/icassp.1998.675354" @default.
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