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In the study of high-dimensional data, it is often assumed that the data set possesses an underlying lower-dimensional structure. A practical model for this structure is an embedded compact manifold with boundary. Since the underlying…

机器学习 · 统计学 2025-08-22 Pei-Cheng Kuo , Nan Wu

In this paper, the problem of state and input constrained control is addressed, with multidimensional constraints. We obtain a local description of the boundary of the admissible subset of the state space where the state and input…

最优化与控制 · 数学 2013-09-11 José A. De Doná , Jean Lévine

We study initial-boundary value problems for linear evolution equations of arbitrary spatial order, subject to arbitrary linear boundary conditions and posed on a rectangular 1-space, 1-time domain. We give a new characterisation of the…

偏微分方程分析 · 数学 2015-05-28 David A. Smith

This paper is concerned with the homogenization of Dirichlet problem of elliptic systems in a bounded, smooth domain of finite type. Both the coefficients of the elliptic operator and the Dirichlet boundary data are assumed to be periodic…

偏微分方程分析 · 数学 2017-02-14 Jinping Zhuge

A boundary for a Banach space is a subset of the dual unit sphere with the property that each element of the Banach space attains its norm on an element of that subset. Trivially, the pointwise convergence with respect to such a boundary is…

泛函分析 · 数学 2008-07-18 Hermann Pfitzner

Multifluid simulations of plasma sheaths are increasingly used to model a wide variety of problems in plasma physics ranging from global magnetospheric flows around celestial bodies to plasma-wall interactions in thrusters and fusion…

等离子体物理 · 物理学 2021-02-03 Petr Cagas , Ammar Hakim , Bhuvana Srinivasan

Hypersurfaces embedded in conformal manifolds appear frequently as boundary data in boundary-value problems in cosmology and string theory. Viewed as the non-null conformal infinity of a spacetime, we consider hypersurfaces embedded in a…

微分几何 · 数学 2023-02-06 Samuel Blitz

Immersed boundary methods are high-order accurate computational tools used to model geometrically complex problems in computational mechanics. While traditional finite element methods require the construction of high-quality boundary-fitted…

数值分析 · 数学 2024-02-27 Jennifer E. Fromm , Nils Wunsch , Kurt Maute , John A. Evans , Jiun-Shyan Chen

In this paper, within scaling invariance theory, we define and apply to the numerical solution of a similarity boundary layer model an iterative transformation method. The boundary value problem to be solved depends on a parameter and is…

数值分析 · 数学 2020-11-20 Riccardo Fazio

Although Bayesian density estimation using discrete mixtures has good performance in modest dimensions, there is a lack of statistical and computational scalability to high-dimensional multivariate cases. To combat the curse of…

统计方法学 · 统计学 2014-10-29 Ye Wang , Antonio Canale , David Dunson

A new topography adapted mesh generation process tailored to simulate Atmospheric Boundary Layer (ABL) flows on complex terrains is presented. The mesher is fully automatic given: the maximum and minimum surface mesh size, the size of the…

数值分析 · 数学 2022-06-16 Abel Gargallo-Peiró , Matias Avila , Arnau Folch

We consider a singularly perturbed semilinear boundary value problem of a general form that allows various types of turning points. A solution decomposition is derived that separates the potential exponential boundary layer terms. The…

数值分析 · 数学 2017-01-24 Simon Becher

Previous work has shown that the problem of learning the optimal structure of a Bayesian network can be formulated as a shortest path finding problem in a graph and solved using A* search. In this paper, we improve the scalability of this…

人工智能 · 计算机科学 2012-02-20 Brandon Malone , Changhe Yuan , Eric A. Hansen , Susan Bridges

An original boundary integral formulation is proposed for the problem of a semi-infinite crack at the interface between two dissimilar elastic materials in the presence of heat flows and mass diffusion. Symmetric and skew-symmetric weight…

数学物理 · 物理学 2016-02-17 L. Morini , A. Piccolroaz

In this paper we introduce a method for solving linear and nonlinear scattering problems for wave equations using a new hybrid approach. This new approach consists of a reformulation of the governing equations into a form that can be solved…

数值分析 · 数学 2018-07-04 Aihua Lin , Anastasiia Kuzmina , Per Kristen Jakobsen

For a Bayes classifier whose input space is a graph, we study the structure of the boundary, which comprises those points for which at least one neighbor is classified differently. The scientific setting is assignment of DNA reads produced…

机器学习 · 统计学 2026-05-28 Alan F. Karr , Zac Bowen , Adam A. Porter , Regina Ruane

The proposed method extends upon the representational output of semantic instance segmentation by explicitly including both visible and occluded parts. A fully convolutional network is trained to produce consistent pixel-level embedding…

计算机视觉与模式识别 · 计算机科学 2020-02-18 Yanfeng Liu , Eric Psota , Lance Pérez

Semantic boundary and edge detection aims at simultaneously detecting object edge pixels in images and assigning class labels to them. Systematic training of predictors for this task requires the labeling of edges in images which is a…

计算机视觉与模式识别 · 计算机科学 2017-06-27 Jing Yu Koh , Wojciech Samek , Klaus-Robert Müller , Alexander Binder

We present an analytic calculation of the layer (parallel) susceptibility at the extraordinary transition in a semi-infinite system with a flat boundary. Using the method of integral transforms put forward by McAvity and Osborn [Nucl. Phys.…

高能物理 - 理论 · 物理学 2021-01-15 M. A. Shpot

We consider second-order PDE problems set in unbounded domains and discretized by Lagrange finite elements on a finite mesh, thus introducing an artificial boundary in the discretization. Specifically, we consider the reaction diffusion…

数值分析 · 数学 2025-03-31 T. Chaumont-Frelet