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Entropy-aware logistic regression for fusion of large-scale speaker recognition systems

2026-09-20 16:08:39
Pierre-Michel Bousquet, Mickael Rouvier
arXiv_SD
         
Abstract

Score-level fusion based on logistic regression is widely used in speaker recognition to combine complementary systems. However, conventional approaches assign fixed system-dependent coefficients and do not explicitly account for variations in the reliability of individual enrollment and test utterances. Drawing on recent research on the entropy of deep learning-based speaker recognition models, this study incorporates an uncertainty component into the fusion process. By exploiting both system-level complementarity and utterance-dependent uncertainty, the method achieves robust performance in large-scale speaker recognition tasks that involve highly variable characteristics of the speech signal. These results demonstrate that model-entropy information provides a valuable complementary cue in large-scale scenarios.

Abstract (translated)

URL

https://arxiv.org/abs/2609.23727

PDF

https://arxiv.org/pdf/2609.23727.pdf

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