Minimal Joint Entropy and Order-Preserving Couplings

Kavli Affiliate: Feng Wang

| First 5 Authors: Ya-Jing Ma, Feng Wang, Xian-Yuan Wu, Kai-Yuan Cai,

| Summary:

This paper focuses on the extreme-value problem for Shannon entropy of the
joint distribution with given marginals. It is proved that the minimum-entropy
coupling must be of order-preserving, while the maximum-entropy coupling
coincides with the independent one. Note that in this sense, we interpret
entropy as a measure of system disorder.

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