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This paper studies the sensitivity of PSI-BLAST with respect to the 'h' parameter. Observing that the standard PSI-BLAST is sensitive to parameter 'h' in the high-value region, we propose a new technique, called boosting PSI- BLAST, to reduce the sensitivity. By constraining 'h' to a small value first so as to reduce the chance of early corruption and then relaxing it gradually to increase divergence,...
In speaker verification over public telephone networks, utterances can be obtained from different types of handsets. Different handsets may introduce different degrees of distortion to the speech signals. This paper attempts to combine a handset selector with (1) handset-specific transformations, (2) reinforced learning, and (3) stochastic feature transformation to reduce the effect caused by the...
Because of the differences in education background, accents, and so on, different persons have different ways of pronunciation. Therefore, the pronunciation patterns of individuals can be used as features for discriminating speakers. This paper exploits the pronunciation characteristics of speakers and proposes a new conditional pronunciation modeling (CPM) technique for speaker verification. The...
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