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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1002.0042math.STstat.TH
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利用$f$求极小极大风险的下界--分歧及其应用

Lower bounds for the minimax risk using $f$-divergences and applications

Adityanand Guntuboyina

摘要:

对于极大极小风险估计问题,证明了涉及$f$的下界-潜在概率测度之间的分歧.我们的证明只是使用简单的凸性事实。我们的边界的特殊情况和直接的推论包括著名的不等式建立极大极小下界,如Fano不等式,Pinsker不等式和全球熵条件的基础上的不等式。提供两种应用程序:一个新的极小极大下界的重建凸体从嘈杂的支撑函数测量和不同的证明最近极小极大下界的估计的协方差阵。

英文摘要:

Lower bounds involving $f$-divergences between the underlying probability measures are proved for the minimax risk in estimation problems. Our proofs just use simple convexity facts. Special cases and straightforward corollaries of our bounds include well known inequalities for establishing minimax lower bounds such as Fano's inequality, Pinsker's inequality and inequalities based on global entropy conditions. Two applications are provided: a new minimax lower bound for the reconstruction of convex bodies from noisy support function measurements and a different proof of a recent minimax lower bound for the estimation of a covariance matrix.

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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