Mutual Information Based Approach for Nonnegative Independent Component Analysis

Authors:
Hua-Jian Wang;Chun-Hou Zheng;Li-Hua Zhang
Affiliations:
College of Electric Information and Automotion, Qufu Normal University, 276826 Rizhao, Shandong, China;School of Information and Communication Technology, Qufu Normal University,;College of Electric Information and Automotion, Qufu Normal University, 276826 Rizhao, Shandong, China
Venue:
ICIC '07 Proceedings of the 3rd International Conference on Intelligent Computing: Advanced Intelligent Computing Theories and Applications. With Aspects of Artificial Intelligence
Year:
2009

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Abstract

This paper proposes a novel algorithm for nonnegative independent component analysis, which is based on minimizing the mutual information of the separated signals, and is truly insensitive to the particular underlying distribution of the source data. The unmixing system culminates to a novel neural network model. Compared with other algorithms for nonnegative ICA, the method proposed in this paper can work efficiently even in the case that the source signals are not well grounded, and that pre-whiting process is not needed. Finally, the experiments were performed on both simulating signals and mixtures of image data, the results indicate that the algorithm is efficient and effective.