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Comparative convexity is a generalization of convexity relying on abstract notions of means. We define the Jensen divergence and the Jensen diversity from the viewpoint of comparative convexity, and show how to obtain the generalized…

信息论 · 计算机科学 2017-05-05 Frank Nielsen , Richard Nock

We give the Choi-Davis-Jensen type inequality without using convexity. Applying our main results, we also give new inequalities improving previous known results. In particular, we show some inequalities for relative operator entropies and…

泛函分析 · 数学 2018-01-31 Jadranka Mićić , Hamid Reza Moradi , Shigeru Furuichi

Since its original formulation, Jensen's inequality has played a fundamental role across mathematics, statistics, and machine learning, with its probabilistic version highlighting the nonnegativity of the so-called Jensen's gap, i.e., the…

机器学习 · 计算机科学 2025-11-11 Marcin Mazur , Tadeusz Dziarmaga , Piotr Kościelniak , Łukasz Struski

Feature selection is a key step when dealing with high dimensional data. In particular, these techniques simplify the process of knowledge discovery from the data by selecting the most relevant features out of the noisy, redundant and…

机器学习 · 计算机科学 2024-02-09 Alaiz-Rodriguez , R. , Parnell , A. C

The goal of this note is to show that some convolution type inequalities from Harmonic Analysis and Information Theory, such as Young's convolution inequality (with sharp constant), Nelson's hypercontractivity of the Hermite semi-group or…

泛函分析 · 数学 2009-07-17 Dario Cordero-Erausquin , Michel Ledoux

There are three classical divergence measures exist in the literature on information theory and statistics. These are namely, Jeffryes-Kullback-Leiber J-divergence. Sibson-Burbea-Rao Jensen-Shannon divegernce and Taneja arithemtic-geometric…

信息论 · 计算机科学 2011-09-27 Inder Jeet Taneja

In transfer learning, training and testing data sets are drawn from different data distributions. The transfer generalization gap is the difference between the population loss on the target data distribution and the training loss. The…

机器学习 · 计算机科学 2021-01-26 Sharu Theresa Jose , Osvaldo Simeone

In this paper, using some aspects of convex functions, we refine discrete Jensen's inequality via weight functions. Then, using these results, we give some applications in different abstract spaces and obtain some new interesting…

数值分析 · 数学 2007-05-23 Jamal Rooin

The concept of Jeans gravitational instability is rediscussed in the framework of nonextensive statistics and its associated kinetic theory. A simple analytical formula generalizing the Jeans criterion is derived by assuming that the…

天体物理学 · 物理学 2009-11-07 J. A. S. Lima , R. Silva , J. Santos

This paper proposes a new sharpened version of the Jensen's inequality. The proposed new bound is simple and insightful, is broadly applicable by imposing minimum assumptions, and provides fairly accurate result in spite of its simple form.…

统计理论 · 数学 2017-10-26 J. G. Liao , Arthur Berg

The Jensen's inequality plays a crucial role in the analysis of time-delay and sampled-data systems. Its conservatism is studied through the use of the Gr\"{u}ss Inequality. It has been reported in the literature that fragmentation (or…

系统与控制 · 计算机科学 2012-04-06 Corentin Briat

We introduce a refinement to the convex split lemma by replacing the max mutual information with the collision mutual information, transforming the inequality into an equality. This refinement yields tighter achievability bounds for quantum…

量子物理 · 物理学 2025-02-18 Gilad Gour

Most quantum divergences derive their structure from classical f-divergences or Renyi-type constructions, a dependence that obscures several quantum geometric effects. We introduce a quantum relative-alpha-entropy that extends Umegaki's…

量子物理 · 物理学 2026-04-09 Sayantan Roy , Atin Gayen , Aditi Kar Gangopadhyay , Sugata Gangopadhyay

Some new inequalities of Karamata type are established with a convex function in this paper. The methods of our proof allow us to obtain an extended version of the reverse of Jensen inequality given by Pe{\v} cari\'c and Mi\'ci\'c. Applying…

数学物理 · 物理学 2019-05-24 Shigeru Furuichi , Hamid Reza Moradi , Akram Zardadi

We examine the problem of controlling divergences for latent space regularisation in variational autoencoders. Specifically, when aiming to reconstruct example $x\in\mathbb{R}^{m}$ via latent space $z\in\mathbb{R}^{n}$ ($n\leq m$), while…

机器学习 · 计算机科学 2021-01-05 Jacob Deasy , Nikola Simidjievski , Pietro Liò

We show that an information-theoretic property of Shannon's entropy power, known as concavity of entropy power, can be fruitfully employed to prove inequalities in sharp form. In particular, the concavity of entropy power implies the…

信息论 · 计算机科学 2012-07-13 Giuseppe Toscani

In this paper the Jessen's type inequality for normalized positive $C_0$-semigroups is obtained. An adjoint of Jessen's type inequality has also been derived for the corresponding adjoint-semigroup, which does not give the analogous results…

泛函分析 · 数学 2015-04-08 Gul I hina Aslam , Matloob Anwar

Whereas Shannon entropy is related to the growth rate of multinomial coefficients, we show that the quadratic entropy (Tsallis 2-entropy) is connected to their $q$-deformation; when $q$ is a prime power, these $q$-multinomial coefficients…

数学物理 · 物理学 2020-03-27 Juan Pablo Vigneaux

This article proposes a new two-parameter generalized entropy, which can be reduced to the Tsallis and the Shannon entropy for specific values of its parameters. We develop a number of information-theoretic properties of this generalized…

数学物理 · 物理学 2024-05-02 Supriyo Dutta , Shigeru Furuichi , Partha Guha

We give a truly elementary proof of the convexity of metric adjusted skew information following an idea of Effros. We extend earlier results of weak forms of superadditivity to general metric adjusted skew informations. Recently, Luo and…

数学物理 · 物理学 2012-10-02 Liang Cai , Frank Hansen