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Energy-based models (EBMs) are generative models that are usually trained via maximum likelihood estimation. This approach becomes challenging in generic situations where the trained energy is non-convex, due to the need to sample the Gibbs…

机器学习 · 计算机科学 2022-02-16 Carles Domingo-Enrich , Alberto Bietti , Marylou Gabrié , Joan Bruna , Eric Vanden-Eijnden

Spatially resolved electron energy-loss spectroscopy (EELS) in a scanning transmission electron microscope (STEM) has been used to investigate as fluidic phase in nanoubbles embedded in a metallic Pd90Pt10 matrix. Using the 1s->2p…

材料科学 · 物理学 2016-08-14 D. Taverna , M. Kociak , O. Stéphan , A. Fabre , E. Finot , B. Décamps , C. Colliex

Various ways to analyze the dynamical response of clusters and molecules to electromagnetic perturbations exist. Particularly rich information can be obtained from measuring the properties of electrons emitted in the course of the…

原子与分子团簇 · 物理学 2015-06-11 P. Wopperer , P. M. Dinh , P. -G. Reinhard , E. Suraud

We introduce an energy-based model, which seems especially suited for constrained systems. The proposed model provides an alternative to the popular port-Hamiltonian framework and exhibits similar properties such as energy dissipation as…

数值分析 · 数学 2024-12-10 R. Altmann , P. Schulze

In this paper, we focus on statistical region-based active contour models where image features (e.g. intensity) are random variables whose distribution belongs to some parametric family (e.g. exponential) rather than confining ourselves to…

计算机视觉与模式识别 · 计算机科学 2008-05-22 François Lecellier , Stéphanie Jehan-Besson , Jalal Fadili , Gilles Aubert , Marinette Revenu

An expression for the electromagnetic field energy density in a dispersive, lossy, left-handed metamaterial, consisting of an array of split-ring resonators and an array of wires is derived. An electromagnetic field with general…

经典物理 · 物理学 2007-05-23 A. D. Boardman , K. Marinov

Constructing a quantum description of crystals from scattering experiments is of paramount importance to explain their macroscopic properties and to evaluate the pertinence of theoretical ab-initio models. While reconstruction methods of…

材料科学 · 物理学 2019-04-19 Benjamin De Bruyne , Jean-Michel Gillet

The possible nature of the nonlinear evolution of quantum systems is explored from the point of view of nonlocal effects under the conditions of EPR paradox. It is shown that both stochastic and deterministic mechanisms of nonlocal…

综合物理 · 物理学 2017-10-30 A. Yu. Samarin

The discovery of novel experimental techniques often lags behind contemporary theoretical understanding. In particular, it can be difficult to establish appropriate measurement protocols without analytic descriptions of the underlying…

数据分析、统计与概率 · 物理学 2023-07-21 Nicholas Hindley , Stephen J. DeVience , Ella Zhang , Leo L. Cheng , Matthew S. Rosen

In this letter we propose the use of physics techniques for entropy determination on constrained parameter optimization problems. The main feature of such techniques, the construction of an unbiased walk on energy space, suggests their use…

统计力学 · 物理学 2009-11-07 A. R. Lima , M. Argollo de Menezes

We analyze the stochastic thermodynamics of systems with continuous space of states. The evolution equation, the rate of entropy production, and other results are obtained by a continuous time limit of a discrete time formulation. We point…

统计力学 · 物理学 2020-08-27 Mário J. de Oliveira

In the field of complex dynamics, multistable attractors have been gaining a significant attention due to its unpredictability in occurrence and extreme sensitivity to initial conditions. Co-existing attractors are abundant in diverse…

适应与自组织系统 · 物理学 2024-06-12 Mousumi Roy , Swarnendu Mandal , Chittaranjan Hens , Awadhesh Prasad , N. V. Kuznetsov , Manish Dev Shrimali

We consider a continuous one dimensional model of two charged interacting particles in a random potential. The electric repulsion is strictly one dimensional and it inhibits Anderson localization. In fact, the spectrum is continuous. The…

无序系统与神经网络 · 物理学 2009-10-31 J. C. Flores

A new tool for modeling electrochemical kinetics is presented. An extension of the Stochastic Simulation Algorithm framework to electrochemical systems is proposed. The physical justifications and constraints for the derivation of a…

化学物理 · 物理学 2016-09-20 O. Beruski

The dispersion coefficient of the constant phase element (CPE) is typically treated as an empirical fitting parameter in the analysis of impedance spectroscopy data, with no clear physical meaning. Here we seek to establish a energy-based…

应用物理 · 物理学 2025-10-22 Anis Allagui , Enrique H. Balaguera , Ahmed Elwakil

This paper illustrates the measurement and the applications of the observable, entropy production rate (EPR), in human subject social interaction systems. To this end, we show (1) how to test the minimax randomization model with…

统计方法学 · 统计学 2011-08-01 Bin Xu , Zhijian Wang

A scheme is developed for estimating state-dependent drift and diffusion coefficients in a stochastic differential equation from time-series data. The scheme does not require to specify parametric forms for the drift and diffusion…

生物物理 · 物理学 2012-09-28 Jun Ohkubo

We present a general embedding theory of electronic excitations of a relatively small, localized system in contact with an extended, chemically complex environment. We demonstrate how to include the screening response of the environment…

材料科学 · 物理学 2010-03-02 Johannes Lischner , Dominika Zgid , Garnet Kin-Lic Chan , T. A. Arias

We develop a framework to test the Equivalence Principle (EP) under conditions where the quantum aspects of nature cannot be neglected, specifically in the context of interference phenomena with unstable particles. We derive the…

广义相对论与量子宇宙学 · 物理学 2013-06-25 Y. Bonder , E. Fischbach , H. Hernandez-Coronado , D. E. Krause , Z. Rohrbach , D. Sudarsky

Energy-based models (EBMs) provide a powerful and flexible way of learning a joint probability distribution over data by constructing an energy surface. This energy surface enables insight extraction and conditional sampling. We apply EBMs…

等离子体物理 · 物理学 2026-05-12 Phil Travis , Troy Carter