This paper considers a dialog control strategy based on the reliability of speech recognition. The spoken dialog system using this strategy accepts an utterance of the user if the reliability is high, while it rejects the utterance and asks the user to speak again (the basic strategy), or confirms the content of the utterance if the reliability is low. The purpose of this paper is to estimate two quantities P/sub ac/ and N, given the performance of the speech recognizer used in a dialog system. P/sub ac/ is the probability that information included in the user's utterance is conveyed to the system correctly, and N is the average number of turns taken between the user and the system until the subdialog on the user's first utterance terminates. The analysis has proven that the direct confirmation can increase P/sub ac/ and the indirect confirmation can reduce N in comparison with the basic strategy. The paper also reported a numerical evaluation of the dialog control strategy conducted by using a real speech recognition system.
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机译：本文考虑了基于语音识别可靠性的对话控制策略。如果可靠性高，则使用此策略的语音对话系统会接受用户的发声;如果可靠性低，则会拒绝该语音并要求用户再次讲话（基本策略），或者确认语音内容。鉴于对话系统中使用的语音识别器的性能，本文的目的是估计两个数量P / sub ac /和N。 P / sub ac /是包含在用户话语中的信息正确传达给系统的概率，N是在用户和系统之间的平均转数，直到用户的第一个话语子对话框终止为止。分析证明，与基本策略相比，直接确认可以增加P / sub ac /，间接确认可以减少N。该论文还报告了使用真实语音识别系统进行的对话控制策略的数值评估。
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