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- W3100588052 abstract "Conversational speech recognition is regarded as a challenging task due to its free-style speaking and long-term contextual dependencies. Prior work has explored the modeling of long-range context through RNNLM rescoring with improved performance. To further take advantage of the persisted nature during a conversation, such as topics or speaker turn, we extend the rescoring procedure to a new context-aware manner. For RNNLM training, we capture the contextual dependencies by concatenating adjacent sentences with various tag words, such as speaker or intention information. For lattice rescoring, the lattice of adjacent sentences are also connected with the first-pass decoded result by tag words. Besides, we also adopt a selective concatenation strategy based on tf-idf, making the best use of contextual similarity to improve transcription performance. Results on four different conversation test sets show that our approach yields up to 13.1% and 6% relative char-error-rate (CER) reduction compared with 1st-pass decoding and common lattice-rescoring, respectively." @default.
- W3100588052 created "2020-11-23" @default.
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- W3100588052 date "2020-11-18" @default.
- W3100588052 modified "2023-10-16" @default.
- W3100588052 title "Context-aware RNNLM Rescoring for Conversational Speech Recognition" @default.
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- W3100588052 doi "https://doi.org/10.48550/arxiv.2011.09301" @default.
- W3100588052 hasPublicationYear "2020" @default.
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