대한음성학회지:말소리 (MALSORI)
- 제52호
- /
- Pages.101-110
- /
- 2004
- /
- 1226-1173(pISSN)
Approximated Posterior Probability for Scoring Speech Recognition Confidence
- Kim Kyuhong (ICU) ;
-
Kim Hoirin
(ICU)
- 발행 : 2004.12.01
초록
This paper proposes a new confidence measure for utterance verification with posterior probability approximation. The proposed method approximates probabilistic likelihoods by using Viterbi search characteristics and a clustered phoneme confusion matrix. Our measure consists of the weighted linear combination of acoustic and phonetic confidence scores. The proposed algorithm shows better performance even with the reduced computational complexity than those utilizing conventional confidence measures.