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Using artificial dissipation to tame entanglement growth, we chart the emergence of diffusion in a generic interacting lattice model for varying U(1) charge densities. We follow the crossover from ballistic to diffusive transport above a…

强关联电子 · 物理学 2026-04-29 N. S. Srivatsa , Oliver Lunt , Tibor Rakovszky , Curt von Keyserlingk

Generally-unbounded infinitesimal generators are studied in the context of operator topology. Beginning with the definition of seminorm, the concept of locally convex topological vector space is introduced as well as the concept of…

泛函分析 · 数学 2020-06-09 Yoritaka Iwata

We develop and implement new probabilistic strategy for proving basic results about long time behaviour for interacting diffusion processes on unbounded lattice. The concept of the solution used is rather weak as we construct the process as…

概率论 · 数学 2016-11-08 Frantisek Zak

In this paper, we will provide the the finite element method for the electro-osmotic flow in micro-channels, in which a convection-diffusion type equation is given for the charge density $\rho^e$. A time-discrete method based on the…

数值分析 · 数学 2026-03-26 Yunxia Wang , Zhiyong Si

Devising optimal interventions for constraining stochastic systems is a challenging endeavour that has to confront the interplay between randomness and nonlinearity. Existing methods for identifying the necessary dynamical adjustments…

统计力学 · 物理学 2022-10-18 Dimitra Maoutsa , Manfred Opper

Our recent work identifies material surfaces in incompressible flows that extremize the transport of an arbitrary, weakly diffusive scalar field relative to neighboring surfaces. Such barriers and enhancers of transport can be located…

流体动力学 · 物理学 2020-06-12 George Haller , Daniel Karrasch , Florian Kogelbauer

Generative models have become increasingly powerful tools for robot motion generation, enabling flexible and multimodal trajectory generation across various tasks. Yet, most existing approaches remain limited in handling multiple types of…

机器人学 · 计算机科学 2026-01-15 Zewen Yang , Xiaobing Dai , Dian Yu , Zhijun Li , Majid Khadiv , Sandra Hirche , Sami Haddadin

Predicting how distributions over discrete variables vary over time is a common task in time series forecasting. But whereas most approaches focus on merely predicting the distribution at subsequent time steps, a crucial piece of…

机器学习 · 计算机科学 2023-03-15 Mukul Bhutani , J. Zico Kolter

Discrete flow mapping was recently introduced as an efficient ray based method determining wave energy distributions in complex built up structures. Wave energy densities are transported along ray trajectories through polygonal mesh…

计算物理 · 物理学 2016-12-21 Janis Bajars , David Chappell , Niels Sondergaard , Gregor Tanner

Finding a transformation between two unknown probability distributions from finite samples is crucial for modeling complex data distributions and performing tasks such as sample generation, domain adaptation and statistical inference. One…

机器学习 · 计算机科学 2024-07-11 Zhe Xiong , Qiaoqiao Ding , Xiaoqun Zhang

This paper concerns a new class of discontinuous dynamical systems for constrained optimization. These dynamics are particularly suited to solve nonlinear, non-convex problems in closed-loop with a physical system. Such approaches using…

最优化与控制 · 数学 2020-05-11 Adrian Hauswirth , Florian Dörfler , Andrew Teel

In this paper, a thermal-dynamical consistent model for mass transfer across permeable moving interfaces is proposed by using the energy variation method. We consider a restricted diffusion problem where the flux across the interface…

数值分析 · 数学 2022-06-15 Yuzhe Qin , Huaxiong Huang , Yi Zhu , Chun Liu , Shixin Xu

This paper provides a reinterpretation of the Drifting Model~\cite{deng2026generative} through a semigroup-consistent long-short flow-map factorization. We show that a global transport process can be decomposed into a long-horizon flow map…

机器学习 · 计算机科学 2026-02-25 Zhiqi Li , Bo Zhu

In this paper we propose a Godunov-based discretization of a hyperbolic system of conservation laws with discontinuous flux, modeling vehicular flow on a network. Each equation describes the density evolution of vehicles having a common…

数值分析 · 数学 2014-08-04 Gabriella Bretti , Maya Briani , Emiliano Cristiani

In this paper, we introduce a novel approach for autonomous driving trajectory generation by harnessing the complementary strengths of diffusion probabilistic models (a.k.a., diffusion models) and transformers. Our proposed framework,…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Chen Yang , Yangfan He , Aaron Xuxiang Tian , Dong Chen , Jianhui Wang , Tianyu Shi , Arsalan Heydarian , Pei Liu

Denoising-based models, including diffusion and flow matching, have led to substantial advances in graph generation. Despite this progress, such models remain constrained by two fundamental limitations: a computational cost that scales…

机器学习 · 计算机科学 2026-04-02 Yoann Boget , Pablo Strasser , Alexandros Kalousis

Often, when solving forward, inverse or data assimilation problems, only a part of the solution is needed. As a model, we consider the stationary diffusion problem. We demonstrate an algorithm that can compute only a part or a functional of…

数值分析 · 数学 2020-08-06 Alexander Litvinenko

This paper proposes a graph-based approach to representing spatio-temporal trajectory data that allows an effective visualization and characterization of city-wide traffic dynamics. With the advance of sensor, mobile, and Internet of Things…

机器学习 · 计算机科学 2022-12-07 Jiwon Kim , Kai Zheng , Jonathan Corcoran , Sanghyung Ahn , Marty Papamanolis

We obtain new transport-entropy inequalities and, as a by-product, new deviation estimates for the laws of two kinds of discrete stochastic approximation schemes. The first one refers to the law of an Euler like discretization scheme of a…

概率论 · 数学 2013-02-01 Max Fathi , Noufel Frikha

We consider statistical inference for a finite-dimensional parameter in a regular semiparametric model under a distributed setting with blockwise missingness, where entire blocks of variables are unavailable at certain sites and sharing…

统计方法学 · 统计学 2025-08-26 Jingyue Huang , Huiyuan Wang , Yuqing Lei , Yong Chen