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- W1584080561 abstract "For large vocabulary continuous speech recognition of highly inflected languages, it is the first step to determine an appropriate speech recognition unit to reduce high out-of-vocabulary rate. We investigate two kinds of approaches to select recognition units. In the morpheme-based approach, we use morpheme as basic recognition unit and merge frequent morpheme pairs into phrases by rule-based method or statistical unit merging method. In statistical unit merging, we investigate the effects of part-of-speech constraints used in selecting merging candidates. In the syllable-based approach, assuming that only text data and pronunciation are available, we obtain merged syllables by using the same statistical merging method where pronunciation variation is taken into account. The experimental results showed that the statistical merging method with appropriate linguistic constraints yields best recognition accuracy. Although the syllable-based approach did not show comparable performance, it has the advantage that it does not require a part-of-speech tagging system." @default.
- W1584080561 created "2016-06-24" @default.
- W1584080561 creator A5000031464 @default.
- W1584080561 date "2002-11-07" @default.
- W1584080561 modified "2023-10-13" @default.
- W1584080561 title "Performance of LVCSR with morpheme-based and syllable-based recognition units" @default.
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- W1584080561 doi "https://doi.org/10.1109/icassp.2000.861974" @default.
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