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Spoken emotion recognition via locality-constrained kernel sparse representation

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Abstract

Spoken emotion recognition is currently a very active research topic and has attracted extensive attention in signal processing, pattern recognition, artificial intelligence, etc. In this paper, a new emotion classification method based on kernel sparse representation, named locality-constrained kernel sparse representation-based classification (LC-KSRC), is proposed for spoken emotion recognition. LC-KSRC is able to learn more discriminating sparse representation coefficients for spoken emotion recognition, since it integrates both sparsity and data locality in the kernel feature space. The proposed method is compared with six representative emotion classification methods, including linear discriminant classifier, K-nearest-neighbor, radial basis function neural networks, support vector machines, sparse representation-based classification and kernel sparse representation-based classification. Experimental results on two publicly available emotional speech databases, i.e., the Berlin database and the Polish database, demonstrate the promising performance of the proposed method on spoken emotion recognition tasks, outperforming the other used methods.

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Acknowledgments

This work is supported by National Natural Science Foundation of China under Grant No. 61203257 and No. 61272261.

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  1. Institute of Image Processing and Pattern Recognition, Taizhou University, Taizhou, 318000, People’s Republic of China

    Xiaoming Zhao & Shiqing Zhang

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  1. Xiaoming Zhao
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Correspondence to Shiqing Zhang.

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Zhao, X., Zhang, S. Spoken emotion recognition via locality-constrained kernel sparse representation. Neural Comput & Applic 26, 735–744 (2015). https://doi.org/10.1007/s00521-014-1755-1

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