Third International Conference on Spoken Language Processing (ICSLP 94)

Yokohama, Japan
September 18-22, 1994

Evaluation of Unknown Word Processing in a Spoken Word Recognition System

Atsuhiko Kai, Seiichi Nakagawa

Department of Information and Computer Sciences, Toyohashi University of Technology, Toyohashi, Japan

Detection of an unknown word or non-vocabulary word uttered by the user is necessary in realizing an effective spoken language user-interface. This paper describes the evaluation of an unknown word processing method for a sub word unit based spoken word recognizer. We have assessed the relationship between the word recognition accuracy of a system and the detection rate of unknown words both by simulation and by experiment of the unknown word processing method. We have seen that the resultant detection accuracies using the unknown word processing are significantly influenced by the original word recognition accuracy.

Full Paper

Bibliographic reference.  Kai, Atsuhiko / Nakagawa, Seiichi (1994): "Evaluation of unknown word processing in a spoken word recognition system", In ICSLP-1994, 2151-2154.