Determination of the Number of Candidates Using Recognition Scores for N-best Based Speech Interface
Determination of the Number of Candidates Using Recognition Scores for N-best Based Speech Interface
复制标题
使用基于 N 最佳的语音接口的识别分数确定候选者的数量
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Y. Yamashita
中科院分区：
文献类型：
--
作者：
Kook Cho;A. Miyayama;Y. Yamashita
最近统计技术极大地提高了语音识别的性能。当仅向用户显示最可能的识别结果时，并不总是获得正确的结果。因此，一些语音接口系统向用户显示多个语音识别候选，并要求他/她从候选中选择正确答案。在这种基于N-best语音识别的语音界面系统中，要显示的候选数量的确定成为一个重要的问题。当显示许多识别候选时，包括正确答案的概率将变高，但是用户需要大量时间和精力来搜索正确答案。本文描述了一种利用 N 最佳语音识别的识别分数分布动态确定候选数量的技术。所提出的方法减少了要显示的候选数量，而不会降低语音识别率。
Recently statistical techniques have greatly improved the performance of speech recognition. The correct result is not always obtained when only the most probable recognition result is shown to the user. Therefore, some speech interface systems display several candidates of speech recognition to the user, and they ask him/her to choose the correct answer from the candidates. In such a speech interface system based on the N-best speech recognition, the determination of the number of candidates to be shown becomes an important problem. When many recognition candidates are displayed the probability that the correct answer is included will becomes high, but the user needs much time and much effort to search the correct answer. This paper describes a technique of determining the number of candidates dynamically using the distribution of the recognition scores for the N-best speech recognition. The proposed method reduces the number of candidates to be shown without degrading the speech recognition rate.