Conference paper

SOUFIFAR Mehdi Mohammad, CUMANI Sandro, BURGET Lukáš and ČERNOCKÝ Jan. Discriminative Classifiers for Phonotactic Language Recognition with iVectors. In: Proc. International Conference on Acoustics, Speech, and Signal Processing 2012. Kyoto: IEEE Signal Processing Society, 2012, pp. 4853-4856. ISBN 978-1-4673-0044-5.
Publication language:english
Original title:Discriminative Classifiers for Phonotactic Language Recognition with iVectors
Title (cs):Diskriminativní klasifikátory pro fonotaktické rozpoznávání jazyka s i-vektory
Pages:4853-4856
Proceedings:Proc. International Conference on Acoustics, Speech, and Signal Processing 2012
Conference:The 37th International Conference on Acoustics, Speech, and Signal Processing
Place:Kyoto, JP
Year:2012
ISBN:978-1-4673-0044-5
Publisher:IEEE Signal Processing Society
URL:http://www.fit.vutbr.cz/research/groups/speech/publi/2012/soufifar_icassp2012_0004853.pdf [PDF]
Keywords
Phonotactic iVector, Discriminative classifier, Support vector machine, Logistic regression
Annotation
The paper is about phonotactic models based on bags of n-grams representations and discriminative classifiers are a popular approach to the language recognition problem.
Abstract
Phonotactic models based on bags of n-grams representations and discriminative classifiers are a popular approach to the language recognition problem. However, the large size of n-gram count vectors brings about some difficulties in discriminative classifiers. The subspace Multinomial model was recently proposed to effectively represent information contained in the n-grams using low-dimensional iVectors. The availability of a low-dimensional feature vector allows investigating different post-processing techniques and different classifiers to improve recognition performance. In this work, we analyze a set of discriminative classifiers based on Support Vector Machines and Logistic Regression and we propose an iVector post-processing technique which allows to improve recognition performance. The proposed systems are evaluated on the NIST LRE 2009 task.
BibTeX:
@INPROCEEDINGS{
   author = {Mohammad Mehdi Soufifar and Sandro Cumani and
	Luk{\'{a}}{\v{s}} Burget and Jan {\v{C}}ernock{\'{y}}},
   title = {Discriminative Classifiers for Phonotactic Language
	Recognition with iVectors},
   pages = {4853--4856},
   booktitle = {Proc. International Conference on Acoustics, Speech, and
	Signal Processing 2012},
   year = {2012},
   location = {Kyoto, JP},
   publisher = {IEEE Signal Processing Society},
   ISBN = {978-1-4673-0044-5},
   language = {english},
   url = {http://www.fit.vutbr.cz/research/view_pub.php?id=9909}
}

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