Log-Concavity and Strong Log-Concavity: a review.
Log-Concavity and Strong Log-Concavity: a review.
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DOI:
10.1214/14-ss107
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发表时间:
2014
影响因子:
3.3
通讯作者:
Wellner JA
中科院分区:
文献类型:
--
作者:
Saumard A;Wellner JA
We review and formulate results concerning log-concavity and strong-log-concavity in both discrete and continuous settings. We show how preservation of log-concavity and strongly log-concavity on ℝ under convolution follows from a fundamental monotonicity result of Efron (1969). We provide a new proof of Efron's theorem using the recent asymmetric Brascamp-Lieb inequality due to Otto and Menz (2013). Along the way we review connections between log-concavity and other areas of mathematics and statistics, including concentration of measure, log-Sobolev inequalities, convex geometry, MCMC algorithms, Laplace approximations, and machine learning.