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- W2028486550 abstract "Dialog act (DA) tags are useful for many applications in natural language processing and automatic speech recognition. In this work, we introduce hidden backoff models (HBMs) where a large generalized backoff model is trained, using an embedded expectation-maximization (EM) procedure, on data that is partially observed. We use HBMs as word models conditioned on both DAs and (hidden) DA-segments. Experimental results on the ICSI meeting recorder dialog act corpus show that our procedure can strictly increase likelihood on training data and can effectively reduce errors on test data. In the best case, test error can be reduced by 6.1% relative to our baseline, an improvement on previously reported models that also use prosody. We also compare with our own prosody-based model, and show that our HBM is competitive even without the use of prosody. We have not yet succeeded, however, in combining the benefits of both prosody and the HBM." @default.
- W2028486550 created "2016-06-24" @default.
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- W2028486550 date "2006-01-01" @default.
- W2028486550 modified "2023-10-01" @default.
- W2028486550 title "Backoff model training using partially observed data" @default.
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- W2028486550 doi "https://doi.org/10.3115/1220835.1220871" @default.
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