International Symposium on Chinese Spoken Language Processing (ISCSLP 2002)

Taipei, Taiwan
August 23-24, 2002

An Automatic Speech Recognition Strategy Directed by the Semantic Knowledge in Dialogue System

Guoliang Zhang, Pengju Yan, Mingxing Xu, Wenhu Wu

Center of Speech Technology, State Key Laboratory of Intelligent Technology and Systems, Tsinghua University, Beijing, China

In the recent years, the research on the dialogue system becomes more and more important. The performance of the automatic speech recognizer of the dialogue system is unsatisfied because of bad recognizing performance for spontaneous utterance. To solve this problem, this paper proposed an automatic speech recognition strategy directed by the semantic knowledge in dialogue system. The main idea of this strategy is to represent the expected utterance of speaker given by the dialogue management as a finite state network (FSN), which will be used for semantic parsing simultaneous with the speech recognizing and giving some feedbacks to direct the speech recognizing. The speech recognition strategy is tested on our dialogue system EasyFlight: a server of query and booking for the flight tickets. The experiment results show that the strategy has better performance than the baseline system.


Full Paper

Bibliographic reference.  ZHANG, Guoliang / YAN, Pengju / XU, Mingxing / WU, Wenhu (2002): "An automatic speech recognition strategy directed by the semantic knowledge in dialogue system", In ISCSLP 2002, paper 70.