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We analyze, in both (1+1)- and (2+1)- dimensions, a periodic elastic medium in which the periodicity is such that at long distances the behavior is always in the random-substrate universality class. This contrasts with the models with an…

无序系统与神经网络 · 物理学 2009-10-31 E. T. Seppala , M. J. Alava , P. M. Duxbury

We investigate the statistics of the number $N(R,S)$ of lattice points, $n\in \Z^2$, in a ``random'' annular domain $\Pi(R,w)=\,(R+w)A\,\setminus RA$, where $R,w >0$. Here $A$ is a fixed convex set with smooth boundary and $w$ is chosen so…

高能物理 - 理论 · 物理学 2009-10-22 Pavel M. Bleher

Scaling of the conductances and the finite-size localization lengths is generalized to anisotropic systems and tested in two dimensional systems. Scaling functions of isotropic systems are recovered once the dimension of the system in each…

凝聚态物理 · 物理学 2009-10-30 Qiming Li , C. M. Soukoulis , S. Katsoprinakis , E. N. Economou

We consider linear regression in the high-dimensional regime where the number of observations $n$ is smaller than the number of parameters $p$. A very successful approach in this setting uses $\ell_1$-penalized least squares (a.k.a. the…

统计方法学 · 统计学 2014-02-05 Adel Javanmard , Andrea Montanari

The view that the probability density function (PDF) of a key statistical variable, anomalously scaled by size or time, could furnish a hallmark of universal behavior contrasts with the circumstance that such density sensibly depends on…

统计力学 · 物理学 2025-04-01 Gianluca Teza , Attilio L. Stella

This work studies universal finite size scaling functions for the number of 1d spanning avalanches in a two-dimensional disordered system with boundary conditions of different nature and different aspect ratios. For this purpose, we…

统计力学 · 物理学 2016-02-24 Víctor Navas-Portella , Eduard Vives

We study the invariant distributions of Hammersley's serial harness process in all dimensions and height fluctuations in one dimension. Subject to mild moment assumptions there is essentially one unique invariant distribution, and all other…

概率论 · 数学 2015-04-28 Timo Seppäläinen , Yun Zhai

Simulation data are analyzed for four 3D spin-$1/2$ Ising models: on the FCC lattice, the BCC lattice, the SC lattice and the Diamond lattice. The observables studied are the susceptibility, the reduced second moment correlation length, and…

统计力学 · 物理学 2019-10-10 P. H. Lundow , I. A. Campbell

This paper presents an updated scaling relation between the optical luminosity density (LD) of galaxies in the $r$ band and the density of the warm-hot intergalactic medium (WHIM) in cosmic filaments, using the high-resolution EAGLE…

宇宙学与河外天体物理 · 物理学 2022-04-06 Patrick Holt , Toni Tuominen , Jukka Nevalainen , Massimiliano Bonamente , Teet Kuutma , Pekka Heinämäki , Elmo Tempel

We develop a unified $L$-statistic testing framework for high-dimensional regression coefficients that adapts to unknown sparsity. The proposed statistics rank coordinate-wise evidence measures and aggregate the top $k$ signals, bridging…

应用统计 · 统计学 2026-02-10 Ping Zhao , Fengyi Song , Huifang Ma

The Hammersley process relates to the statistical properties of the maximum length of all up/right paths connecting random points of a given density in the unit square from (0,0) to (1,1). This process can also be interpreted in terms of…

数学物理 · 物理学 2009-11-10 Peter J. Forrester

Statistical behavior and scaling properties of iso-height lines in three different saturated two-dimensional grown surfaces with controversial universality classes are investigated using ideas from Schramm-Loewner evolution (SLE$_\kappa$).…

统计力学 · 物理学 2010-08-10 A. A. Saberi , H. Dashti-Naserabadi , S. Rouhani

The scaling function of the 2D Ising model in a magnetic field on the square and triangular lattices is obtained numerically via Baxter's variational corner transfer matrix approach. The use of the Aharony-Fisher non-linear scaling…

Let $p$ be an unknown and arbitrary probability distribution over $[0,1)$. We consider the problem of {\em density estimation}, in which a learning algorithm is given i.i.d. draws from $p$ and must (with high probability) output a…

机器学习 · 计算机科学 2014-11-04 Siu-On Chan , Ilias Diakonikolas , Rocco A. Servedio , Xiaorui Sun

Suppose that $\m{U} = (U_1, \ldots , U_d) $ has a Uniform$([0,1]^d)$ distribution, that $\m{Y} = (Y_1 , \ldots , Y_d) $ has the distribution $G$ on $\RR_+^d$, and let $\m{X} = (X_1 , \ldots , X_d) = (U_1 Y_1 , \ldots , U_d Y_d )$. The…

统计理论 · 数学 2010-05-11 Marios G. Pavlides , Jon A. Wellner

We introduce $p$-uniformity to characterize the scaling of density fluctuations in spatial random systems in $\mathbb{R}^d$, ranging from hyperfluctuation to stealthy hyperuniformity. Our central theorem establishes sufficient conditions to…

概率论 · 数学 2026-05-22 Luca Lotz , Michael A. Klatt

We analyze universal and nonuniversal finite-size effects of lattice systems in a $L^d$ geometry above the upper critical dimension d = 4 within the O(n) symmetric $\phi^4$ lattice theory. On the basis of exact results for $n \to\infty$ and…

统计力学 · 物理学 2021-05-26 X. S. Chen , V. Dohm

We introduce a class of one-dimensional discrete space-discrete time stochastic growth models described by a height function $h_t(x)$ with corner initialization. We prove, with one exception, that the limiting distribution function of…

概率论 · 数学 2009-09-25 Janko Gravner , Craig A. Tracy , Harold Widom

In this study, a density-on-density regression model is introduced, where the association between densities is elucidated via a warping function. The proposed model has the advantage of a being straightforward demonstration of how one…

统计方法学 · 统计学 2023-07-10 Yi Zhao , Abhirup Datta , Bohao Tang , Vadim Zipunnikov , Brian S. Caffo

Using Monte Carlo methods, we compute the finite-size scaling function of the helicity modulus $\Upsilon$ of the two-dimensional O(3) model and compare it to the low temperature expansion prediction. From this, we estimate the range of…

统计力学 · 物理学 2016-08-31 Norbert Schultka