arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.11665stat.MLcs.ITcs.LGmath.ITmath.STstat.TH
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Profile Entropy: A Fundamental Measure for the Learnability and Compressibility of Discrete Distributions

University of California, San Diego(加利福尼亚大学圣地亚哥分校);Dept. of Electrical and Computer Engineering(电气与计算机工程系)

Yi Hao, Alon Orlitsky

英文摘要:

The profile of a sample is the multiset of its symbol frequencies. We show that for samples of discrete distributions, profile entropy is a fundamental measure unifying the concepts of estimation, inference, and compression. Specifically, profile entropy a) determines the speed of estimating the distribution relative to the best natural estimator; b) characterizes the rate of inferring all symmetric properties compared with the best estimator over any label-invariant distribution collection; c) serves as the limit of profile compression, for which we derive optimal near-linear-time block and sequential algorithms. To further our understanding of profile entropy, we investigate its attributes, provide algorithms for approximating its value, and determine its magnitude for numerous structural distribution families.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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