대한음성학회:학술대회논문집 (Proceedings of the KSPS conference)
- 대한음성학회 2006년도 춘계 학술대회 발표논문집
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- Pages.41-44
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- 2006
모노폰 거리를 이용한 트라이폰 클러스터링 방법 연구
Efficient Triphone Clustering Using Monophone Distance
- Bang Kyu-Seop (Department of Computer Science and Engineering, Korea University) ;
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Yook Dong-Suk
(Department of Computer Science and Engineering, Korea University)
- 발행 : 2006.05.01
초록
The purpose of state tying is to reduce the number of models and to use relatively reliable output probability distributions. There are two approaches: one is top down clustering and the other is bottom up clustering. For seen data, the performance of bottom up approach is better than that of top down approach. In this paper, we propose a new clustering technique that can enhance the undertrained triphone clustering performance. The basic idea is to tie unreliable triphones before clustering. An unreliable triphone is the one that appears in the training data too infrequently to train the model accurately. We propose to use monophone distance to preprocess these unreliable triphones. It has been shown in a pilot experiment that the proposed method reduces the error rate significantly.
키워드