Authors: Kenji Fukumizu , Arthur Gretton , Xiaohai Sun , Bernhard Schölkopf - Conference on Neural Information Processing Systems, NeurIPS 2007 cited by 684
We propose a new measure of conditional dependence of random variables, based on normalized cross-covariance operators on reproducing kernel Hilbert spaces. Unlike previous kernel dependence measures, the proposed criterion does not depend on the choice of kernel in the limit of infinite data, for a wide class of kernels. At the same time, it has a straightforward empirical estimate with good convergence behaviour. We discuss the theoretical properties of the measure, and demonstrate its application in experiments.
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