5th European Conference on Speech Communication and Technology

Rhodes, Greece
September 22-25, 1997

Confidence Measures for Hybrid HMM/ANN Speech Recognition

Gethin Williams, Steve Renals

Dept. of Computer Science, University of Sheffield, Sheffield, UK

In this paper we introduce four acoustic confidence measures which are derived from the output of a hybrid HMM/ANN large vocabulary continuous speech recognition system. These confidence measures, based on local posterior probability estimates computed by an ANN, are evaluated at both phone and word levels, using the North American Business News corpus.

Full Paper

Bibliographic reference.  Williams, Gethin / Renals, Steve (1997): "Confidence measures for hybrid HMM/ANN speech recognition", In EUROSPEECH-1997, 1955-1958.