【摘要】 提出了一种用于电话语音识别系统的置信度快速估计算法,此算法是在语音识别器帧同步束搜索的过程中基于状态图的同步估计算法,使用同识别器解码相同的声学模型进行置信度估计,此算法取得了比传统的两遍解码估计置信度算法更好的性能,而且计算复杂度较低,运行速度快,解决了计算置信度时使用模型的区分度与计算速度之间的矛盾。更多还原

【Abstract】 In this paper,we propose a new method for calculating confidence score.In this method,confidence calculation is synchronous to the decoding process on the basis of state graph.Only one acoustics model is needed.Conflict between discriminability of catch-all model and the speed of confidence calculation is avoided.Experimental results show that the method is better than the traditional two-pass method both in performance and speed.更多还原