Článek ve sborníku konference

MATĚJKA Pavel, GLEMBEK Ondřej, CASTALDO Fabio, ALAM Jahangir, PLCHOT Oldřich, KENNY Patrick, BURGET Lukáš a ČERNOCKÝ Jan. 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: IEEE Signal Processing Society, 2011, s. 4828-4831. ISBN 978-1-4577-0537-3.
Jazyk publikace:angličtina
Název publikace:Full-covariance UBM and Heavy-tailed PLDA in I-Vector Speaker Verification
Název (cs):Plné kovarianční matice a Heavy-tailed PLDA v ověřování mluvčího pomocí i-vektorů
Strany:4828-4831
Sborník:Proceedings of the 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011
Konference:International Conference on Acoustics, Speech and Signal Processing 2011
Místo vydání:Praha, CZ
Rok:2011
ISBN:978-1-4577-0537-3
Vydavatel:IEEE Signal Processing Society
URL:http://www.fit.vutbr.cz/research/groups/speech/publi/2011/matejka_icassp2011_4828.pdf [PDF]
URL:http://www.fit.vutbr.cz/research/groups/speech/publi/2011/matejka_icassp2011_poster4828.pdf [PDF]
Klíčová slova
GMM, speaker recognition, PLDA, heavytailed PLDA, full-covariance UBM, i-vectors
Anotace
Publikace pojednává o plné kovarianční matici a Heavy-tailed PLDA v ověřování mluvčího pomocí i-vektorů.
Abstrakt
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:
@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.cs?id=9657}
}

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