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We consider a fractional Brownian motion with unknown linear drift such that the drift coefficient has a prior normal distribution and construct a sequential test for the hypothesis that the drift is positive versus the alternative that it…

统计理论 · 数学 2026-01-14 Alexey Muravlev , Mikhail Zhitlukhin

The notion of concept drift refers to the phenomenon that the distribution, which is underlying the observed data, changes over time. We are interested in an identification of those features, that are most relevant for the observed drift.…

机器学习 · 计算机科学 2020-12-02 Fabian Hinder , Jonathan Jakob , Barbara Hammer

This work investigates the inverse drift problem in the one-dimensional parabolic equation with the final time data. The authors construct an operator first, whose fixed points are the unknown drift, and then apply it to prove the…

数值分析 · 数学 2025-10-14 Dakang Cen , Wenlong Zhang , Zhidong Zhang

The clogging behavior of a symmetric binary mixture of particles that are driven in opposite directions through constrictions is explored by Brownian dynamics simulations and theory. A dynamical state with a spontaneously broken symmetry…

软凝聚态物质 · 物理学 2016-12-28 Tobias Glanz , Raphael Wittkowski , Hartmut Löwen

We derive conditions for monotonicity properties that characterize general flows of a commodity over a network, where the flow is described by potential and flow dynamics on the edges, as well as potential continuity and Kirchhoff-Neumann…

最优化与控制 · 数学 2020-07-21 Sidhant Misra , Marc Vuffray , Anatoly Zlotnik

We explore various properties of classical one-dimensional Wigner solids in the presence of disorder at T=0 in the context of a recently discovered Anderson transition of plasma modes in the random potential system. The extent to which the…

无序系统与神经网络 · 物理学 2011-11-09 Shimul Akhanjee , Joseph Rudnick

We propose an alternative interpretation of Markovian transport models based on the well-mixedness condition, in terms of the properties of a random velocity field with second order structure functions scaling linearly in the space time…

混沌动力学 · 物理学 2009-11-10 Piero Olla , Paolo Paradisi

The value of a continuous character evolving on a phylogenetic tree is commonly modelled as the location of a particle moving under one-dimensional Brownian motion with constant rate. The Brownian motion model is best suited to characters…

种群与进化 · 定量生物学 2013-02-21 Michael G. Elliot , Arne O. Mooers

In this communication, we examine a nonlinear model with an impurity emulating a bend. We justify the geometric interpretation of the model and connect it with earlier work on models including geometric effects. We focus on both the…

斑图形成与孤子 · 物理学 2015-05-25 J. Cuevas , P. G. Kevrekidis

Starting with a Brownian motion, we define and study a novel diffusion process by combining stickiness and oscillation properties. The associated stochastic differential equation, resolvent and semigroup are provided. Also the trivariate…

概率论 · 数学 2023-02-08 Wajdi Touhami

We prove global well-posedness for a class of dissipative semilinear stochastic evolution equations with singular drift and multiplicative Wiener noise. In particular, the nonlinear term in the drift is the superposition operator associated…

偏微分方程分析 · 数学 2018-10-03 Carlo Marinelli , Luca Scarpa

A dynamical version of the Widom-Rowlinsom model in the continuum is considered. The dynamics is modelled by a spatial two-component birth-and-death Glauber process where particles, in addition, are allowed to change their type with density…

动力系统 · 数学 2022-03-17 Martin Friesen

A discussion of the robustness properties of the proposed observer with respect to measurement errors is provided for the recently proposed full-order and reduced-order, hybrid, dead-beat observer for a class of nonlinear systems, linear in…

最优化与控制 · 数学 2011-02-21 Iasson Karafyllis , Zhong-Ping Jiang

This paper deals with the issue of concept drift in supervised machine learn-ing. We make use of graphical models to elicit the visible structure of the dataand we infer from there changes in the hidden context. Differently from previous…

机器学习 · 计算机科学 2021-02-03 Luigi Riso , Marco Guerzoni

The monotonicity and stability of difference schemes for, in general, hyperbolic systems of conservation laws with source terms are studied. The basic approach is to investigate the stability and monotonicity of a non-linear scheme in terms…

计算物理 · 物理学 2008-11-04 V. S. Borisov , M. Mond

We establish well-posedness for a class of systems of SDEs with non-Lipschitz coefficients in the diffusion and jump terms and with two sources of interdependence: a monotone function of all the components in the drift of each SDE and the…

概率论 · 数学 2026-03-24 Ying Jiao , Nikolaos Kolliopoulos

We study the movement of the living organism in a band form towards the presence of chemical substrates based on a system of partial differential evolution equations. We incorporate Einstein's method of Brownian motion to deduce the…

偏微分方程分析 · 数学 2023-10-10 Rahnuma Islam , Akif Ibragimov

We propose a general solution to the problem of robust Bayesian inference in complex settings where outliers may be present. In practice, the automation of robust Bayesian analyses is important in the many applications involving large and…

统计方法学 · 统计学 2022-04-15 Jeremie Houssineau , David J. Nott

In the realm of supervised learning, Bayesian learning has shown robust predictive capabilities under input and parameter perturbations. Inspired by these findings, we demonstrate the robustness properties of Bayesian learning in the…

机器学习 · 计算机科学 2022-05-17 Nardos Ayele Ashenafi , Wankun Sirichotiyakul , Aykut C. Satici

The times of Brownian local minima, maxima and their union are three distinct examples of local, stationary, dense, random countable sets associated with classical Wiener noise. Being local means, roughly, determined by the local behavior…

概率论 · 数学 2022-12-13 Matija Vidmar , Jon Warren