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- W2019414250 abstract "For spoken document retrieval, it is crucial to consider Out-of-vocabulary (OOV) and the mis-recognition of spoken words. Consequently, sub-word unit based recognition and retrieval methods have been proposed. This paper describes a Japanese spoken term detection method for spoken documents that robustly considers OOV words and mis-recognition. To solve the problem of OOV keywords, we use individual syllables as the sub-word unit in continuous speech recognition. To address OOV words, recognition errors, and high-speed retrieval, we propose a distant n-gram indexing/retrieval method that incorporates a distance metric in a syllable lattice. When applied to syllable sequences, our proposed method outperformed a conventional DTW method between syllable sequences and was about 100 times faster. The retrieval results show that we can detect OOV words in a database containing 44 h of audio in less than 10 m sec per query with an F-measure of 0.54." @default.
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- W2019414250 date "2013-03-01" @default.
- W2019414250 modified "2023-09-25" @default.
- W2019414250 title "A robust/fast spoken term detection method based on a syllable n-gram index with a distance metric" @default.
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- W2019414250 doi "https://doi.org/10.1016/j.specom.2012.12.001" @default.
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