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We derive the Kullback-Leibler divergence for the normal-gamma distribution and show that it is identical to the Bayesian complexity penalty for the univariate general linear model with conjugate priors. Based on this finding, we provide…

统计理论 · 数学 2016-11-07 Joram Soch , Carsten Allefeld

The local space density of galaxies as a function of their basic structural parameters -luminosity, surface brightness and scale size- is still poorly known. Our poor knowledge is the result of strong selection biases against low surface…

天体物理学 · 物理学 2009-10-31 Roelof S. de Jong , Cedric Lacey

Estimating Kullback Leibler (KL) divergence from samples of two distributions is essential in many machine learning problems. Variational methods using neural network discriminator have been proposed to achieve this task in a scalable…

机器学习 · 计算机科学 2021-10-01 Sandesh Ghimire , Aria Masoomi , Jennifer Dy

Using a sample of ten nearby (z< 0.15), relaxed galaxy clusters in the temperature range [2-9] keV, we have investigated the scaling relation between the mass at various density contrasts (delta=2500,1000,500,200) and the cluster…

天体物理学 · 物理学 2008-11-26 M. Arnaud , E. Pointecouteau , G. W. Pratt

We interpret likelihood-based test functions from a geometric perspective where the Kullback-Leibler (KL) divergence is adopted to quantify the distance from a distribution to another. Such a test function can be seen as a sub-Gaussian…

信息论 · 计算机科学 2021-01-05 Yan Wang

The family of skew-symmetric distributions is a wide set of probability density functions obtained by combining in a suitable form a few components which are selectable quite freely provided some simple requirements are satisfied. Intense…

概率论 · 数学 2010-12-22 Adelchi Azzalini , Giuliana Regoli

In this article, we prove that the quantum $f$-divergence between two normal states on a semifinite von~Neumann algebra is equal to the classical $f$-divergence between two corresponding classical states, which are called Nussbaum-Szko{\l}a…

量子物理 · 物理学 2026-04-23 Theodoros Anastasiadis , George Androulakis

The log-concave maximum likelihood estimator of a density on the real line based on a sample of size $n$ is known to attain the minimax optimal rate of convergence of $O(n^{-4/5})$ with respect to, e.g., squared Hellinger distance. In this…

统计理论 · 数学 2016-09-06 Arlene K. H. Kim , Adityanand Guntuboyina , Richard J. Samworth

The clusters of a distribution are often defined by the connected components of a density level set. However, this definition depends on the user-specified level. We address this issue by proposing a simple, generic algorithm, which uses an…

统计方法学 · 统计学 2015-10-29 Ingo Steinwart

The relation between angular diameter distance and redshift in a spherically symmetric dust-shell universe is studied. This model has large inhomogeneities of matter distribution on small scales. We have discovered that the relation agrees…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Norimasa Sugiura , Ken-ichi Nakao , Tomohiro Harada

Multi-dimensional distributions whose marginal distributions are uniform are called copulas. Among them, the one that satisfies given constraints on expectation and is closest to the independent distribution in the sense of Kullback-Leibler…

统计方法学 · 统计学 2022-04-11 Yici Chen , Tomonari Sei

In this paper we propose a family of multivariate asymmetric distributions over an arbitrary subset of set of real numbers which is defined in terms of the well-known elliptically symmetric distributions. We explore essential properties,…

统计方法学 · 统计学 2024-09-02 Roberto Vila , Helton Saulo , Leonardo Santos , João Monteiros , Felipe Quintino

The contributions of the paper span theoretical and implementational results. First, we prove that Kd-trees can be extended to spaces in which the distance is measured with an arbitrary Bregman divergence. Perhaps surprisingly, this shows…

计算几何 · 计算机科学 2025-02-20 Tuyen Pham , Hubert Wagner

In high dimension, low sample size (HDLSS) settings, classifiers based on Euclidean distances like the nearest neighbor classifier and the average distance classifier perform quite poorly if differences between locations of the underlying…

统计方法学 · 统计学 2022-03-08 Sarbojit Roy , Soham Sarkar , Subhajit Dutta , Anil K. Ghosh

This book deals with functions allowing to express the dissimilarity (discrepancy) between two data fields or ''divergence functions'' with the aim of applications to linear inverse problems. Most of the divergences found in the litterature…

最优化与控制 · 数学 2020-03-04 Henri Lantéri

To ensure stability of learning, state-of-the-art generalized policy iteration algorithms augment the policy improvement step with a trust region constraint bounding the information loss. The size of the trust region is commonly determined…

机器学习 · 计算机科学 2018-04-05 Boris Belousov , Jan Peters

Using the ratios conjectures as introduced by Conrey, Farmer and Zirnbauer, we obtain closed formulas for the one-level density for two families of L-functions attached to elliptic curves. From those closed formulas, we can determine the…

数论 · 数学 2013-09-05 Chantal David , Duc Khiem Huynh , James Parks

We prove that the distribution density of any non-constant polynomial $f(\xi_1,\xi_2,\ldots)$ of degree $d$ in independent standard Gaussian random variables $\xi$ (possibly, in infinitely many variables) always belongs to the…

概率论 · 数学 2016-05-03 Vladimir I. Bogachev , Egor D. Kosov , Georgii I. Zelenov

The Pinsker inequality lower bounds the Kullback--Leibler divergence $D_{\textrm{KL}}$ in terms of total variation and provides a canonical way to convert $D_{\textrm{KL}}$ control into $\lVert \cdot \rVert_1$-control. Motivated by…

信息论 · 计算机科学 2026-02-06 Guglielmo Beretta , Tommaso Cesari , Roberto Colomboni

If the probability distribution model aims to approximate the hidden mother distribution, it is imperative to establish a useful criterion for the resemblance between the mother and the model distributions. This study proposes a criterion…

统计理论 · 数学 2025-11-13 Yo Sheena