Results 71 to 80 of about 8,171,715 (369)
Distributed user profiling via spectral methods
Stochastic Systems, 2014 User profiling is a useful primitive for constructing personalised services, such as content recommendation. In the present paper we investigate the feasibility of user profiling in a distributed setting, with no central authority and only local ...
Dan-Cristian Tomozei, Laurent Massoulié
doaj +1 more source
On the spectrum of noisy blown-up matrices
Special Matrices, 2020 We study the eigenvalues of large perturbed matrices. We consider a pattern matrix P, we blow it up to get a large block-matrix Bn. We can observe only a noisy version of matrix Bn. So we add a random noise Wn to obtain the perturbed matrix An = Bn + Wn.
Fazekas István, Pecsora Sándor
doaj +1 more source
An Efficient Collaborative Filtering Method for Image Noise and Artifact Removal
IEEE Access, 2020 In recent years, sparse representation theory and low-rank approximation model have been widely used in signal and image processing fields. In the study of natural image denoising, non-local similarity method can enhance the correlation of grouped image ...
Xuya Liu +5 more
doaj +1 more source
Sub-Gaussian estimators of the mean of a random matrix with heavy-tailed entries [PDF]
Annals of Statistics, 2016 Estimation of the covariance matrix has attracted a lot of attention of the statistical research community over the years, partially due to important applications such as Principal Component Analysis.
Stanislav Minsker
semanticscholar +1 more source
Random matrix models for phase diagrams [PDF]
, 2011 We describe a random matrix approach that can provide generic and readily soluble mean-field descriptions of the phase diagram for a variety of systems ranging from QCD to high-T_c materials.
A D Jackson +11 more
core +1 more source
Staggered chiral random matrix theory
, 2011 We present a random matrix theory (RMT) for the staggered lattice QCD Dirac operator. The staggered RMT is equivalent to the zero-momentum limit of the staggered chiral Lagrangian and includes all taste breaking terms at their leading order.
B. Svetitsky, James C. Osborn
core +1 more source
Random block matrices and matrix orthogonal polynomials [PDF]
, 2008 In this paper we consider random block matrices, which generalize the general beta ensembles, which were recently investigated by Dumitriu and Edelmann (2002, 2005).
Holger Dette +2 more
core +2 more sources
Random matrix theory of the isospectral twirling
SciPost Physics, 2021 We present a systematic construction of probes into the dynamics of isospectral ensembles of Hamiltonians by the notion of Isospectral twirling, expanding the scopes and methods of ref.[1].
Salvatore F. E. Oliviero, Lorenzo Leone, Francesco Caravelli, Alioscia Hamma
doaj +1 more source
Random matrix theory and $QCD_3$
, 1994 We suggest that the spectral properties near zero virtuality of three dimensional QCD, follow from a Hermitean random matrix model. The exact spectral density is derived for this family of random matrix models both for even and odd number of fermions ...
A. N. Redlich +24 more
core +1 more source
occumb: An R package for site occupancy modeling of eDNA metabarcoding data
Population Ecology, EarlyView.This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley +1 more source