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Feature Selection Based on Mutual Information for Language Recognition

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2 Author(s)
Yan Deng ; Dept. of Electron. Eng., Tsinghua Univ., Beijing, China ; Jia Liu

The prevailing system for language recognition is the parallel phoneme recognition followed by vector space modeling (PPRVSM), which uses a vector space model to describe the cooccurrence information of phones. As the super-vectors are composed of phonetic N-Grams, so for high dimension vectors, there is a problem that the number of N-Grams grows exponentially as the order N increases, which will result in data sparseness. In this paper, we propose a feature selection algorithm to solve this problem, which uses the maximum relevance criteria based on mutual information to select the most discriminative N-Grams to identify languages. The effectiveness of the technique is demonstrated on the NIST 2005 language recognition 30-second task. And we achieve 4.81% in terms of equal-error-rate (EER).

Published in:

Image and Signal Processing, 2009. CISP '09. 2nd International Congress on

Date of Conference:

17-19 Oct. 2009

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