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    • 2. 发明申请
    • SPEECH RECOGNIZER WITH A LEXICAL TREE BASED N-GRAM LANGUAGE MODEL
    • 语音识别器与基于LEEICAL TREE的N-GRAM语言模型
    • WO0148737A2
    • 2001-07-05
    • PCT/CN9900217
    • 1999-12-23
    • INTEL CORPLIN ZHIWEIYAN YONGHONGZHAO QINGWEIYUAN BAOSHENG
    • LIN ZHIWEIYAN YONGHONGZHAO QINGWEIYUAN BAOSHENG
    • G10L15/187G10L15/197G10L15/06G10L15/00G10L15/08
    • G10L15/197G10L15/187
    • In some embodiments, the invention includes a method comprising creating a lexical tree and identifying beginning phonemes in the lexical tree. The method of these embodiments further includes estimating probabilities of words in the lexical tree having particular ones of the beginning phonemes and storing at least some of the estimated probabilities, wherein backoff weights are not stored with the estimated probabilities. The estimated probabilities may be stored in a lookup table. In other embodiment, the invention includes a method of receiving phonemes and identifying them on a lexical tree. The method of these embodiments also includes estimating probabilities of words that include the phonemes through use of estimated probabilities retrieved from storage, wherein the retrieve probabilities do not include backoff weights stored with the estimated probabilities. Again, the estimated probabilities may be stored in a lookup table. The estimated probabilities may be used in establishing a pruning threshold. The methods may be implemented by instructions on a computer readable medium.
    • 在一些实施例中,本发明包括一种方法,包括创建词汇树并且识别词汇树中的起始音素。 这些实施例的方法还包括估计具有特定起始音素的词汇树中的词的概率,并且存储估计概率中的至少一些,其中退避权重不与估计的概率一起存储。 估计的概率可以存储在查找表中。 在另一个实施例中,本发明包括接收音素并在词汇树上识别它们的方法。 这些实施例的方法还包括通过使用从存储器检索的估计概率来估计包括音素的单词的概率,其中检索概率不包括用估计概率存储的退避权重。 再次,估计的概率可以存储在查找表中。 估计概率可用于建立修剪阈值。 这些方法可以通过计算机可读介质上的指令来实现。