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We exhibit an explicit formula for the spectral density of a (large) random matrix which is a diagonal matrix whose spectral density converges, perturbated by the addition of a symmetric matrix with Gaussian entries and a given (small)…

概率论 · 数学 2011-04-28 Florent Benaych-Georges , Nathanaël Enriquez

We study large deviation properties of random matricial spectral measures.

概率论 · 数学 2014-01-21 Fabrice Gamboa , Alain Rouault

Understanding the limiting behavior of eigenvalues of random matrices is the central problem of random matrix theory. Classical limit results are known for many models, and there has been significant recent progress in obtaining more…

概率论 · 数学 2017-09-05 Elizabeth S. Meckes , Mark W. Meckes

Covariance matrices are fundamental to the analysis and forecast of economic, physical and biological systems. Although the eigenvalues $\{\lambda_i\}$ and eigenvectors $\{{\bf u}_i\}$ of a covariance matrix are central to such endeavors,…

统计理论 · 数学 2018-03-02 Dane Taylor , Juan G. Restrepo , Francois G. Meyer

This paper investigates limiting properties of eigenvalues of multivariate sample spatial-sign covariance matrices when both the number of variables and the sample size grow to infinity. The underlying p-variate populations are general…

统计理论 · 数学 2021-01-25 Weiming Li , Qinwen Wang , Jianfeng Yao , Wang Zhou

We consider random vectors $X$ that satisfy the equation in law $X=AX+B$, where $A$ is a given random diagonal matrix and $B$ a given random vector, both independent of $X$. It is well known by the works of Kesten and Goldie that the…

概率论 · 数学 2025-10-28 Ewa Damek , Sebastian Mentemeier

We investigate the spectral distribution of large sample covariance matrices with independent columns and entries in the columns that stem from Markov chains. We characterize the limiting spectral densities by their moments.…

概率论 · 数学 2012-03-19 Olga Friesen , Matthias Löwe

This review presents an account of the major works done on spectra of adjacency matrices drawn on networks and the basic understanding attained so far. We have divided the review under three sections: (a) extremal eigenvalues, (b) bulk part…

无序系统与神经网络 · 物理学 2018-12-20 Camellia Sarkar , Sarika Jalan

This paper develops an efficient Monte Carlo method to estimate the tail probabilities of the ratio of the largest eigenvalue to the trace of the Wishart matrix, which plays an important role in multivariate data analysis. The estimator is…

统计方法学 · 统计学 2018-03-28 Yinqiu He , Gongjun Xu

See cond-mat/0010425 and cond-mat/0010426.

凝聚态物理 · 物理学 2007-05-23 L. Benet , H. A. Weidenmueller

We briefly review the random matrix theory for large N by N matrices viewed as free random variables in a context of stochastic diffusion. We establish a surprising link between the spectral properties of matrix-valued multiplicative…

We study the statistics of the largest eigenvalue lambda_max of N x N random matrices with unit variance, but power-law distributed entries, P(M_{ij})~ |M_{ij}|^{-1-mu}. When mu > 4, lambda_max converges to 2 with Tracy-Widom fluctuations…

统计力学 · 物理学 2015-06-25 Giulio Biroli , Jean-Philippe Bouchaud , Marc Potters

Relying on recent advances in statistical estimation of covariance distances based on random matrix theory, this article proposes an improved covariance and precision matrix estimation for a wide family of metrics. The method is shown to…

机器学习 · 统计学 2021-02-03 Malik Tiomoko , Florent Bouchard , Guillaume Ginholac , Romain Couillet

We compute exact asymptotic of the statistical density of random matrices belonging to invariant random matrices ensemble (RMT) orthogonal, unitary and symplectic ensembles, where all its eigenvalues lie within the interval $[\sigma,…

概率论 · 数学 2015-09-23 Mohamed Bouali

This paper considers the problem of testing for latent structure in large symmetric data matrices. The goal here is to develop statistically principled methodology that is flexible in its applicability, computationally efficient, and…

统计方法学 · 统计学 2025-12-23 Jonquil Z. Liao , Joshua Cape

In this paper, we investigate the eigenvalue distribution of a class of kernel random matrices whose $(i,j)$-th entry is $f(X_i,X_j)$ where $f$ is a symmetric function belonging to the Paley-Wiener space $\mathcal{B}_c$ and $(X_i)_{1\leq i…

统计理论 · 数学 2025-07-22 Jebalia Mohamed , Ahmed Souabni

We present a simple Coulomb gas method to calculate analytically the probability of rare events where the maximum eigenvalue of a random matrix is much larger than its typical value. The large deviation function that characterizes this…

统计力学 · 物理学 2009-02-27 Satya N. Majumdar , Massimo Vergassola

The model of heavy Wigner matrices generalizes the classical ensemble of Wigner matrices: the sub-diagonal entries are independent, identically distributed along to and out of the diagonal, and the moments its entries are of order 1/N,…

概率论 · 数学 2012-09-12 Camille Male

A quantum statistical system with energy dissipation is studied. Its statisitics is governed by random complex-valued non-Hermitean Hamiltonians belonging to complex Ginibre ensemble. The eigenenergies are shown to form stable structure in…

统计力学 · 物理学 2007-05-23 Maciej M. Duras

We analyze complex networks under random matrix theory framework. Particularly, we show that $\Delta_3$ statistic, which gives information about the long range correlations among eigenvalues, provides a qualitative measure of randomness in…

统计力学 · 物理学 2015-05-13 Sarika Jalan , Jayendra N. Bandyopadhyay
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