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This work introduces a novel Fourier phase retrieval model, called polarimetric phase retrieval that enables a systematic use of polarization information in Fourier phase retrieval problems. We provide a complete characterization of…

信号处理 · 电气工程与系统科学 2022-06-28 Julien Flamant , Konstantin Usevich , Marianne Clausel , David Brie

Iterative methods based on matrix splittings are useful in solving large sparse linear systems. In this direction, proper splittings and its several extensions are used to deal with singular and rectangular linear systems. In this article,…

数值分析 · 数学 2019-07-08 Ashish Kumar Nandi , Jajati Keshari Sahoo , Debasisha Mishra

Fixed-point iterative sweeping methods were developed in the literature to efficiently solve steady state solutions of Hamilton-Jacobi equations and hyperbolic conservation laws. Similar as other fast sweeping schemes, the key components of…

数值分析 · 数学 2021-07-28 Liang Li , Jun Zhu , Yong-Tao Zhang

In this paper we mainly propose efficient and reliable numerical algorithms for solving stochastic continuous-time algebraic Riccati equations (SCARE) typically arising from the differential statedependent Riccati equation technique from…

数值分析 · 数学 2023-12-04 Tsung-Ming Huang , Yueh-Cheng Kuo , Ren-Cang Li , Wen-Wei Lin

We consider iterated function systems (IFS) in ${\mathbb R}^d$ for $d\ge 3$ of the form $\{f_j(x) = \lambda {\mathcal O} x + a_j\}_{j=0}^m$, with $a_0=0$ and $m\ge 1$. Here $\lambda\in (0,1)$ is the contraction ratio and ${\mathcal O}$ is…

动力系统 · 数学 2025-08-21 Boris Solomyak

For optimal power flow problems with chance constraints, a particularly effective method is based on a fixed point iteration applied to a sequence of deterministic power flow problems. However, a priori, the convergence of such an approach…

最优化与控制 · 数学 2023-12-13 Johannes J. Brust , Mihai Anitescu

In this paper, we present solvable, convex formulations of $H_2$-optimal state estimation and state-feedback control problems for a general class of linear Partial Differential Equations (PDEs) with one spatial dimension. These convex…

最优化与控制 · 数学 2024-04-29 Sachin Shivakumar , Matthew Peet

The precise analysis and accurate measurement of harmonic provides a reliable scientific industrial application. However, the high-performance DSP processor is the important method of electrical harmonic analysis. Hence, in this research…

信号处理 · 电气工程与系统科学 2018-06-13 Rozita Teymourzadeh , Memtode Jim , Mok Vee hong

This research investigates using a mixed-precision iterative refinement method using posit numbers instead of the standard IEEE floating-point format. The method is applied to solve a general linear system represented by the equation $Ax =…

数值分析 · 数学 2024-08-28 James Quinlan , E. Theodore L. Omtzigt

We present some advances, both from a theoretical and from a computational point of view, on a quadratic vector equation (QVE) arising in Markovian Binary Trees. Concerning the theoretical advances, some irreducibility assumptions are…

数值分析 · 数学 2014-08-26 Dario A. Bini , Beatrice Meini , Federico Poloni

We introduce a new class of optimal iterative methods without memory for approximating a simple root of a given nonlinear equation. The proposed class uses four function evaluations and one first derivative evaluation per iteration and it…

数值分析 · 数学 2014-10-13 Somayeh Sharifi , Mehdi Salimi , Stefan Siegmund , Taher Lotfi

Automatic algorithms attempt to provide approximate solutions that differ from exact solutions by no more than a user-specified error tolerance. This paper describes an automatic, adaptive algorithm for approximating the solution to a…

数值分析 · 数学 2018-09-28 Yuhan Ding , Fred J. Hickernell , Lluís Antoni Jiménez Rugama

For small number of equations, systems of linear (and sometimes nonlinear) equations can be solved by simple classical techniques. However, for large number of systems of linear (or nonlinear) equations, solutions using classical method…

神经与进化计算 · 计算机科学 2013-04-16 A. R. M. Jalal Uddin Jamali , M. M. A. Hashem , Md. Bazlar Rahman

This paper presents a novel implicit scheme for the constraint resolution in real-time finite element simulations in the presence of contact and friction. Instead of using the standard motion correction scheme, we propose an iterative…

分布式、并行与集群计算 · 计算机科学 2023-06-13 Ziqiu Zeng , Hadrien Courtecuisse

We present a simple but efficient and robust reconstruction algorithm for Fourier ptychographic microscopy, termed error-laxity Fourier ptychographic iterative engine (Elfpie), that is simultaneously robust to (1) noise signal (including…

复变函数 · 数学 2022-09-30 Shuhe Zhang , Tos T. J. M. Berendschot , Jinhua Zhou

Local fixpoint iteration describes a technique that restricts fixpoint iteration in function spaces to needed arguments only. It has been studied well for first-order functions in abstract interpretation and also in model checking. Here we…

计算机科学中的逻辑 · 计算机科学 2020-09-24 Florian Bruse , Jörg Kreiker , Martin Lange , Marco Sälzer

Fourier solvers have become efficient tools to establish structure-property relations in heterogeneous materials. Introduced as an alternative to the Finite Element (FE) method, they are based on fixed-point solutions of the…

A numerical method is developed to solve linear semi-infinite programming problem (LSIP) in which the iterates produced by the algorithm are feasible for the original problem. This is achieved by constructing a sequence of standard linear…

最优化与控制 · 数学 2021-01-26 Shuxiong Wang

Iterative Proportional Fitting (IPF), combined with EM, is commonly used as an algorithm for likelihood maximization in undirected graphical models. In this paper, we present two iterative algorithms that generalize upon IPF. The first one…

机器学习 · 计算机科学 2013-01-07 Wim Wiegerinck , Tom Heskes

This work introduces a new framework, named SAFFIRE, to automatically extract a dominant recurrent image pattern from a set of image samples. Such a pattern shall be used to eliminate pose variations between samples, which is a common…

计算机视觉与模式识别 · 计算机科学 2021-03-08 Marco Boschi , Luigi Di Stefano , Martino Alessandrini
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