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We propose a matrix zonotope perturbation framework that leverages matrix perturbation theory to characterize how noise-induced distortions alter the dynamics within sets of models. The framework derives interpretable Cai-Zhang bounds for…

系统与控制 · 电气工程与系统科学 2026-04-16 Peng Xie , Abdulla Fawzy , Zhen Zhang , Amr Alanwar

The KPZ fixed point is a 2d random field, conjectured to be the universal limiting fluctuation field for the height function of models in the KPZ universality class. Similarly, the periodic KPZ fixed point is a conjectured universal field…

概率论 · 数学 2023-05-03 Jinho Baik , Andrei Prokhorov , Guilherme L. F. Silva

The ensemble Kalman filter (EnKF) is a widely used methodology for state estimation in partial, noisily observed dynamical systems, and for parameter estimation in inverse problems. Despite its widespread use in the geophysical sciences,…

数值分析 · 数学 2016-09-21 Claudia Schillings , Andrew M. Stuart

This letter proposes a novel adaptive reduced-rank filtering scheme based on joint iterative optimization of adaptive filters. The novel scheme consists of a joint iterative optimization of a bank of full-rank adaptive filters that forms…

信息论 · 计算机科学 2012-05-22 Rodrigo C. de Lamare , Raimundo Sampaio-Neto

The distributed Kaczmarz algorithm is an adaptation of the standard Kaczmarz algorithm to the situation in which data is distributed throughout a network represented by a tree. We isolate substructures of the network and study convergence…

Recently developed series representations of the Boltzmann operator are used to obtain Quantum Mechanical results for the matrix elements, <x| exp(-{\beta} H)|x>, of the imaginary time propagator. The calculations are done for two different…

化学物理 · 物理学 2012-03-28 Mahir E. Ocak

For continuous-time linear stochastic dynamical systems driven by Wiener processes, we consider the problem of designing ensemble filters when the observation process is randomly time-sampled. We propose a continuous-discrete McKean--Vlasov…

最优化与控制 · 数学 2024-06-21 Aneel Tanwani , Olga Yufereva

Kibble-Zurek (KZ) mechanism describes the scaling behavior when driving a system across a continuous symmetry-breaking transition. Previous studies have shown that the KZ-like scaling behavior also lies in the topological transitions in the…

统计力学 · 物理学 2024-10-21 Huan Yuan , Jinyi Zhang , Shuai Chen , Xiaotian Nie

The Sunyaev-Zeldovich thermal (tSZ) and kinetic (kSZ) effects can be used to constrain the thermodynamic properties of pressure and density, respectively, of galaxies and their surrounding regions. As SZ observations continue to improve, it…

宇宙学与河外天体物理 · 物理学 2023-07-21 Emily Moser , Nicholas Battaglia , Stefania Amodeo

We present a message-passing based parallel version of the Space Saving algorithm designed to solve the $k$--majority problem. The algorithm determines in parallel frequent items, i.e., those whose frequency is greater than a given…

数据结构与算法 · 计算机科学 2015-09-29 Massimo Cafaro , Marco Pulimeno , Piergiulio Tempesta

The analysis of systems operating in future frequency ranges calls for a proper statistical channel characterization through generalized fading models. In this paper, we adopt the Extended $\eta$-$\mu$ and $\kappa$-$\mu$ models to…

信息论 · 计算机科学 2025-08-09 Gustavo Rodrigues de Lima Tejerina , Italo Atzeni

The conformable time fractional Jimbo-Miwa and Zakharov-Kuznetsov equations are solved by the generalized form of the Kudryashov method. A simple compatible wave transformation is employed to reduce the dimension of the equations to one.…

可精确求解与可积系统 · 物理学 2017-06-02 Alper Korkmaz , Ozlem Ersoy Hepson

Kibble-Zurek mechanism (KZM) uses critical scaling to predict density of topological defects and other excitations created in second order phase transitions. We point out that simply inserting asymptotic critical exponents deduced from the…

量子气体 · 物理学 2014-09-01 Jacek Dziarmaga , Wojciech H. Zurek

Kaneko and Tsumura introduced a new kind of multiple zeta functions $\eta(k_1,\ldots,k_r;s_1,\ldots,s_r)$. This is an analytic function of complex variables $s_1,\ldots,s_r$, while $k_1,\ldots,k_r$ are non-positive integer parameters. In…

数论 · 数学 2022-02-09 Shuji Yamamoto

There exist two popular energy-momentum tensors for an electromagnetic wave in a dielectric medium. The Abraham expression is robust to experimental verification but more mathematically demanding, while the Minkowski expression is the…

经典物理 · 物理学 2009-02-22 R. N. C. Pfeifer , T. A. Nieminen , N. R. Heckenberg , H. Rubinsztein-Dunlop

Parameter estimation in cognitive communications can be formulated as a multi-user estimation problem, which is solvable under maximum likelihood solution but involves high computational complexity. This paper presents a time-sharing and…

信息论 · 计算机科学 2011-11-17 Pengkai Zhao , Cong Shen

This paper extends the ensemble Kalman filter (EnKF) for inverse problems to identify trending model coefficients. This is done by repeatedly inflating the ensemble while maintaining the mean of the particles. As a benchmark serves a…

最优化与控制 · 数学 2020-01-30 M. Schwenzer , G. Visconti , M. Ay , T. Bergs , M. Herty , D. Abel

An extended Kalman filter (EKF) is developed on the special Euclidean group, SE(3) for geometric control of a quadrotor UAV. It is obtained by performing an extensive linearization on SE(3) to estimate the state of the quadrotor from noisy…

最优化与控制 · 数学 2016-05-10 Farhad A. Goodarzi , Taeyoung Lee

In \cite{CaZh:09}, we introduced and analyzed an improved Zienkiewicz-Zhu (ZZ) estimator for the conforming linear finite element approximation to elliptic interface problems. The estimator is based on the piecewise "constant" flux recovery…

数值分析 · 数学 2016-04-26 Zhiqiang Cai , Cuiyu He , Shun Zhang

Phase retrieval has been an attractive but difficult problem rising from physical science, and there has been a gap between state-of-the-art theoretical convergence analyses and the corresponding efficient retrieval methods. Firstly, these…

信息论 · 计算机科学 2017-12-06 Gen Li , Yuchen Jiao , Yuantao Gu