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- W1949536478 abstract "Describes a speaker verification system in which the talker and imposter models are adapted to achieve maximum discrimination or, equivalently, minimum verification error. This goal is accomplished by extending the minimum classification error (MCE) criterion and the generalized probabilistic descent (GPD) algorithm to the task of adapting talker model parameters and the corresponding anti-talker model parameters to the test environments so as to minimize an empirical estimate of the verification error rate. We address in the current study adaptation of two types of parameters: the model parameters and the decision threshold. We have obtained substantial improvements in the equal error rate by applying combined techniques involving a simplified MAP (maximum a posteriori) method and the GPD algorithm. The equal error rate for a database of 43 talkers with 5 adaptation utterances each was reduced from the previously reported best result of 5.41% to 2.17%. We discuss several alternative methods that have been investigated in this work to provide comparative insights for the use of discriminative methods in speaker verification tasks." @default.
- W1949536478 created "2016-06-24" @default.
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- W1949536478 date "2002-12-24" @default.
- W1949536478 modified "2023-10-14" @default.
- W1949536478 title "Discriminative adaptation for speaker verification" @default.
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- W1949536478 doi "https://doi.org/10.1109/icslp.1996.607965" @default.
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