An efficient lexical tree search for large vocabulary continuous speech recognition

An efficient lexical tree search for large vocabulary continuous speech recognition
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用于大词汇量连续语音识别的高效词汇树搜索

DOI:
10.21437/icslp.2000-432
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发表时间:
2000
期刊:
Interspeech
影响因子:
--
通讯作者:
Y. Ariki
Y. Ariki
中科院分区:
--
文献类型:
--
作者:
J. Ogata;Y. Ariki

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本文描述了一种用于高速、高精度 LVCSR 系统的高效搜索算法。传统使用的词汇树搜索是一种有效的方法,但在结合语言概率方面存在问题。为了解决这个问题,我们在本文中提出了一种结合语言模型结构的新的高效搜索算法。在我们开发的LVCSR中,采用2遍搜索算法来生成词图作为中间表达式。 20000字日语听写任务的实验结果表明,该方法可以在不增加任何错误的情况下减少大约一半的处理时间。
This paper describes an efficient search algorithm for a high speed and high accuracy LVCSR system. A conventional-ly used lexical tree search is an efficient method, but has a problem in incorporating the language probability. To solve this problem, we propose in this paper a new efficient search algorithm incorporating the language model structure. In our developed LVCSR, 2-pass search algorithm is adopted to produce a word graph as an intermediate expression. The experimental results on the 20,000-word Japanese dictation task showed that the proposed method can reduce approximately half of the processing time without increasing any errors.
T.Kawahara,T.Kobayashi,K.Takeda,N.Minematsu,K.Itou,M.Yamamoto,A.Yamada,T.Utsuro,K.Shikano:“用于日语大词汇连续语音识别的可共享软件存储库”Proc。
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