Topographic Independent Component Analysis

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文件名称：Topographic Independent Component Analysis
文件大小：1.45MB
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更新时间：2012-05-28 03:43:51
Tica 介绍Topographic ICA原理 In ordinary independent component analysis, the components are assumed to be completely independent, and they do not necessarily have any meaningful order relationships. In practice, however, the estimated “independent” components are often not at all independent. We propose that this residual dependence structure could be used to define a topographic order for the components. In particular, a distance between two components could be defined using their higher-order correlations, and this distance could be used to create a topographic representation. Thus we obtain a linear decomposition into approximately independent components, where the dependence of two components is approximated by the proximity of the components in the topographic representation