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Stochastic resonance is a phenomenon in which noise enhances the response of a system to an input signal. The brain is an example of a system that has to detect and transmit signals in a noisy environment, suggesting that it is a good…

We study two problems. First, we consider the large deviation behavior of empirical measures of certain diffusion processes as, simultaneously, the time horizon becomes large and noise becomes vanishingly small. The law of large numbers…

概率论 · 数学 2023-09-14 Amarjit Budhiraja , Pavlos Zoubouloglou

The paper is concerned with a dissipativity theory and robust performance analysis of discrete-time stochastic systems driven by a statistically uncertain random noise. The uncertainty is quantified by the conditional relative entropy of…

系统与控制 · 计算机科学 2012-08-21 Igor G. Vladimirov , Ian R. Petersen

This paper studies finite element approximations of the stochastic Allen-Cahn equation with gradient-type multiplicative noises that are white in time and correlated in space. The sharp interface limit as the parameter $\epsilon \rightarrow…

数值分析 · 数学 2015-05-18 Xiaobing Feng , Yukun Li , Yi Zhang

This is a course on noise which covers some of the scattering theory for normal metals, Hanbury Brown and Twiss analogs for noise correlations with electrons, noise correlations in superconducting/normal metal junctions. Entanglement in…

介观与纳米尺度物理 · 物理学 2007-05-23 Thierry Martin

Data on nuclear level densities extracted from transmission data or gamma energy spectrum store the basic statistical information about nuclei at various temperatures. Generally this extracted data goes through model fitting using computer…

核理论 · 物理学 2019-09-17 Nishchal R. Dwivedi , Saniya Monga , Harjeet Kaur , Sudhir R. Jain

This work focuses on topics related to Hamiltonian stochastic differential equations with L\'{e}vy noise. We first show that the phase flow of the stochastic system preserves symplectic structure, and propose a stochastic version of…

动力系统 · 数学 2019-07-24 Pingyuan Wei , Ying Chao , Jinqiao Duan

The traditional kernel density estimator of an unknown density is by construction completely nonparametric, in the sense that it has no preferences and will work reasonably well for all shapes. The present paper develops a class of…

统计方法学 · 统计学 2026-05-05 Nils Lid Hjort , Ingrid Kristine Glad

A standard finite element method discretizes the stochastic linear Schr\"{o}dinger equation driven by additive noise in the spatial variables. The weak convergence of the resulting approximate solution is analyzed, and it is established…

概率论 · 数学 2025-03-18 Mangala Prasad

We present for the first time an asymptotic convergence analysis of two time-scale stochastic approximation driven by `controlled' Markov noise. In particular, both the faster and slower recursions have non-additive controlled Markov noise…

动力系统 · 数学 2017-02-28 Prasenjit Karmakar , Shalabh Bhatnagar

We consider a Kuramoto-Shivashinsky like equation close to the threshold of instability with additive white noise and spatially periodic boundary conditions which simultaneously exhibit Turing bifurcations with a spatial 1:3 resonance of…

偏微分方程分析 · 数学 2024-12-17 Anna Logioti

This paper derives non-asymptotic error bounds for nonlinear stochastic approximation algorithms in the Wasserstein-$p$ distance. To obtain explicit finite-sample guarantees for the last iterate, we develop a coupling argument that compares…

机器学习 · 计算机科学 2026-02-03 Seo Taek Kong , R. Srikant

In usual (non-stochastic) tensor network calculations, the truncated singular value decomposition (SVD) is often used for approximating a tensor, and it causes systematic errors. By introducing stochastic noise in the approximation,…

高能物理 - 格点 · 物理学 2023-07-05 Erika Arai , Hiroshi Ohki , Shinji Takeda , Masaaki Tomii

We introduce a new framework for analyzing (Quasi-}Newton type methods applied to non-smooth optimization problems. The source of randomness comes from the evaluation of the (approximation) of the Hessian. We derive, using a variant of…

最优化与控制 · 数学 2025-03-05 Titus Pinta

It is well-known that density estimation on the unit interval is asymptotically equivalent to a Gaussian white noise experiment, provided the densities are sufficiently smooth and uniformly bounded away from zero. We show that a uniform…

统计理论 · 数学 2019-11-15 Kolyan Ray , Johannes Schmidt-Hieber

We study the small-mass limit, also known as the Smoluchowski-Kramers diffusion approximation (see \cite{kra} and \cite{smolu}), for a system of stochastic damped wave equations, whose solution is constrained to live in the unitary sphere…

概率论 · 数学 2024-09-13 Sandra Cerrai , Mengzi Xie

The small mass limit of the Langevin equation perturbed by $\alpha$-stable L\'{e}vy noise is considered by rewriting it in the form of slow-fast system, and spliting the fast component into three parts, where $\alpha\in(1,2)$. By exploring…

概率论 · 数学 2025-02-27 Qingming Zhao , Wei Wang

We consider minimizing a smooth and strongly convex objective function using a stochastic Newton method. At each iteration, the algorithm is given an oracle access to a stochastic estimate of the Hessian matrix. The oracle model includes…

最优化与控制 · 数学 2022-11-29 Sen Na , Michał Dereziński , Michael W. Mahoney

In a stochastic noise setting the Lepskij balancing principle for choosing the regularization parameter in the regularization of inverse problems is depending on a parameter $\tau$ which in the currently known proofs is depending on the…

数值分析 · 数学 2010-08-05 Frank Bauer

We propose a new approach to non-parametric density estimation that is based on regularizing a Sobolev norm of the density. This method is statistically consistent, and makes the inductive bias of the model clear and interpretable. While…

机器学习 · 统计学 2024-02-15 Mark Kozdoba , Binyamin Perets , Shie Mannor