Mutual Information as a Function of Moments
Mutual Information as a Function of Moments
复制标题
互信息作为矩的函数
DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
F. Calmon
中科院分区:
文献类型:
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作者:
Wael Alghamdi;F. Calmon
We introduce a mutual information estimator based on the connection between estimation theory and information theory. By combining a polynomial approximation of the minimum mean-squared error estimator with the I-MMSE relationship, we derive a new formula for the mutual information I(X; Y) that is a function of only the marginal distribution of X, the moments of Y, and the conditional moments of Y given X. Estimating the moments in this new formula by sample moments provides an estimator of mutual information that captures desirable properties, such as being invariant under affine transformations.