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200 篇论文

Nearest neighbor cells in $R^d,d\in\mathbb{N}$, are used to define coefficients of divergence ($\phi$-divergences) between continuous multivariate samples. For large sample sizes, such distances are shown to be asymptotically normal with a…

概率论 · 数学 2009-03-06 Yu. Baryshnikov , Mathew D. Penrose , J. E. Yukich

Several numerical approximation strategies for the expectation-propagation algorithm are studied in the context of large-scale learning: the Laplace method, a faster variant of it, Gaussian quadrature, and a deterministic version of…

统计计算 · 统计学 2016-11-16 Alexis Roche

We analyze the Gaussian approximation as a method to obtain the first and second moments of a stochastic process described by a master equation. We justify the use of this approximation with ideas coming from van Kampen's expansion approach…

统计力学 · 物理学 2015-05-18 Luis F. Lafuerza , Raul Toral

Let $\pi_n$ be a uniformly chosen random permutation on $[n]$. Using an analysis of the probability that two overlapping consecutive $k$-permutations are order isomorphic, the authors of a recent paper showed that the expected number of…

组合数学 · 数学 2024-08-07 Anant Godbole , Hannah Swickheimer

Distribution of the sum of independent identically distributed symmetric lattice vectors is approximated by the accompanying compound Poisson law and the second-order Hipp-type signed compound Poisson measure. Bergstr\"om -type asymptotic…

概率论 · 数学 2026-05-22 Vydas Čekanavičius , Simona Jokubauskienė

The Poisson distribution arises naturally when dealing with data involving counts, and it has found many applications in inverse problems and imaging. In this work, we develop an approximate Bayesian inference technique based on expectation…

数值分析 · 数学 2019-09-04 Chen Zhang , Simon Arridge , Bangti Jin

Many statistical models have likelihoods which are intractable: it is impossible or too expensive to compute the likelihood exactly. In such settings, a common approach is to replace the likelihood with an approximation, and proceed with…

统计理论 · 数学 2016-11-23 Helen Ogden

This work is devoted to the analysis of a Gibbs partition model, also known as a composition scheme. We consider a natural new condition on the component weights. It leads to a new behavior for the total number of components. We discover a…

组合数学 · 数学 2025-09-29 Niccolò Bosio , Markus Kuba , Benedikt Stufler

We study the error of the number of points of the lattice $\mathbb{Z}^{d}$ that fall into a dilated and translated hypercube centred around $0$ and whose axis are parallel to the axis of coordinates. We show that if $t$, the factor of…

概率论 · 数学 2022-11-08 Julien Trevisan

We consider simple exclusion processes on Z for which the underlying random walk has a finite first moment and a non-zero mean and whose initial distributions are product measures with different densities to the left and to the right of the…

概率论 · 数学 2011-11-10 E. Andjel , P. A. Ferrari , A. Siqueira

We characterise the convergence of the Gibbs sampler which samples from the joint posterior distribution of parameters and missing data in hierarchical linear models with arbitrary symmetric error distributions. We show that the convergence…

统计方法学 · 统计学 2007-10-24 Omiros Papaspiliopoulos , Gareth Roberts

For any stationary $\mZ^d$-Gibbs measure that satisfies strong spatial mixing, we obtain sequences of upper and lower approximations that converge to its entropy. In the case, $d=2$, these approximations are efficient in the sense that the…

动力系统 · 数学 2012-08-09 Brian Marcus , Ronnie Pavlov

We consider the nearest-neighbor spacing distributions of mixed random matrix ensembles interpolating between different symmetry classes, or between integrable and non-integrable systems. We derive analytical formulas for the spacing…

数学物理 · 物理学 2012-08-22 Sebastian Schierenberg , Falk Bruckmann , Tilo Wettig

The problem of the approximation of convolutions by accompanying laws in the scheme of series satisfying the infinitesimality condition is considered. It is shown that the quality of approximation depends essentially on the choice of…

概率论 · 数学 2022-08-04 A. Yu. Zaitsev

Expectation Propagation (EP) provides a framework for approximate inference. When the model under consideration is over a latent Gaussian field, with the approximation being Gaussian, we show how these approximations can systematically be…

机器学习 · 统计学 2013-10-28 Manfred Opper , Ulrich Paquet , Ole Winther

In [Compositio Math. 155 (2019)] Kleinbock and Wadleigh proved a "zero-one law" for uniform inhomogeneous Diophantine approximations. We generalize this statement with arbitrary weight functions and establish a new and simple proof of this…

数论 · 数学 2025-08-05 Vasiliy Neckrasov

An approximation method is presented for probabilistic inference with continuous random variables. These problems can arise in many practical problems, in particular where there are "second order" probabilities. The approximation, based on…

人工智能 · 计算机科学 2013-04-10 Ross D. Shachter

We are thankful to the discussants for their hard, interesting work. The main purpose of our paper was to give reasonably sharp rates of convergence for some simple examples of the Gibbs sampler. We chose examples from expository accounts…

统计方法学 · 统计学 2008-08-29 Persi Diaconis , Kshitij Khare , Laurent Saloff-Coste

We derive a new perturbation scheme for treating the large d limit of lattice models at arbitrary filling. The results are compared with exact diagonalization data for the Hubbard model and found to be in good agreement.

凝聚态物理 · 物理学 2009-10-28 Henrik Kajueter , Gabriel Kotliar

We study the path behaviour of a simple random walk on the 2-dimensional comb lattice ${\mathbb C}^2$ that is obtained from ${\mathbb Z}^2$ by removing all horizontal edges off the x-axis. In particular, we prove a strong approximation…

概率论 · 数学 2009-02-26 E. Csaki , M. Csorgo , A. Foldes , P. Revesz