Ing. Pavel Matějka, Ph.D.
| Matějka, P., Glembek, O., Castaldo, F., Alam, J., Plchot, O., Kenny, P., Burget, L., Černocký, J.: Full-covariance UBM and Heavy-tailed PLDA in I-Vector Speaker Verification, In: Proceedings of the 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011, Praha, CZ, IEEESP, 2011, s. 4828-4831, ISBN 978-1-4577-0537-3 | | Jazyk publikace: | angličtina |
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| Název publikace: | Full-covariance UBM and Heavy-tailed PLDA in I-Vector Speaker Verification |
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| Název (cs): | Plné kovarianční matice a Heavy-tailed PLDA v ověřování mluvčího pomocí i-vektorů |
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| Strany: | 4828-4831 |
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| Sborník: | Proceedings of the 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 |
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| Konference: | International Conference on Acoustics, Speech and Signal Processing 2011 |
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| Místo vydání: | Praha, CZ |
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| Rok: | 2011 |
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| ISBN: | 978-1-4577-0537-3 |
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| Vydavatel: | IEEE Signal Processing Society |
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| URL: | http://www.fit.vutbr.cz/research/groups/speech/publi/2011/matejka_icassp2011_4828.pdf [PDF] |
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| URL: | http://www.fit.vutbr.cz/research/groups/speech/publi/2011/matejka_icassp2011_poster4828.pdf [PDF] |
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| Klíčová slova |
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| GMM, speaker recognition, PLDA, heavytailed PLDA, full-covariance UBM, i-vectors |
| Anotace |
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| Publikace pojednává o plné kovarianční matici a Heavy-tailed PLDA v ověřování mluvčího pomocí i-vektorů. |
| Abstrakt |
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| In this paper, we describe recent progress in i-vector based speaker verification. The use of universal background models (UBM) with full-covariance matrices is suggested and thoroughly experimentally tested. The i-vectors are scored using a simple cosine distance and advanced techniques such as Probabilistic Linear Discriminant Analysis (PLDA) and heavy-tailed variant of PLDA (PLDA-HT). Finally, we investigate into dimensionality reduction of i-vectors before entering the PLDA-HT modeling. The results are very competitive: on NIST 2010 SRE task, the results of a single full-covariance LDA-PLDA-HT system approach those of complex fused system. |
| BibTeX: |
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@INPROCEEDINGS{
author = {Pavel Matějka and Ondřej Glembek and Fabio Castaldo and
Jahangir Alam and Oldřich Plchot and Patrick Kenny and Lukáš
Burget and Jan Černocký},
title = {Full-covariance UBM and Heavy-tailed PLDA in I-Vector
Speaker Verification},
pages = {4828--4831},
booktitle = {Proceedings of the 2011 IEEE International Conference on
Acoustics, Speech, and Signal Processing, ICASSP 2011},
year = {2011},
location = {Praha, CZ},
publisher = {IEEE Signal Processing Society},
ISBN = {978-1-4577-0537-3},
language = {english},
url = {http://www.fit.vutbr.cz/research/view_pub.php?id=9657}
} |
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