Results 1 to 10 of about 82 (82)

On the spectrum of noisy blown-up matrices

open access: yesSpecial 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

Convergence properties for coordinatewise asymptotically negatively associated random vectors in Hilbert space

open access: yesOpen Mathematics, 2023
In this work, the authors study some convergence results including weak law of large numbers, strong law of large numbers, complete convergence, and complete moment convergence for weighted sums of coordinatewise asymptotically negatively associated ...
He Qihui, Pan Lin
doaj   +1 more source

Sequential change-point detection in a multinomial logistic regression model

open access: yesOpen Mathematics, 2020
Change-point detection in categorical time series has recently gained attention as statistical models incorporating change-points are common in practice, especially in the area of biomedicine.
Li Fuxiao, Chen Zhanshou, Xiao Yanting
doaj   +1 more source

Strong consistency of regression function estimator with martingale difference errors

open access: yesOpen Mathematics, 2021
In this paper, we consider the regression model with fixed design: Yi=g(xi)+εi{Y}_{i}=g\left({x}_{i})+{\varepsilon }_{i}, 1≤i≤n1\le i\le n, where {xi}\left\{{x}_{i}\right\} are the nonrandom design points, and {εi}\left\{{\varepsilon }_{i}\right\} is a ...
Chen Yingxia
doaj   +1 more source

Various limit theorems for ratios from the uniform distribution

open access: yesOpen Mathematics, 2016
In this paper, we consider the ratios of order statistics in samples from uniform distribution and establish strong and weak laws for these ratios.
Miao Yu, Sun Yan, Wang Rujun, Dong Manru
doaj   +1 more source

Complete convergence for arrays of ratios of order statistics

open access: yesOpen Mathematics, 2019
Let {Xn,k, 1 ≤ k ≤ mn, n ≥ 1} be an array of independent random variables from the Pareto distribution. Let Xn(k) be the kth largest order statistic from the nth row of the array and set Rn,in,jn = Xn(jn)/Xn(in) where jn < in. The aim of this paper is to
Miao Yu   +3 more
doaj   +1 more source

Sufficient and necessary conditions of convergence for ρ͠ mixing random variables

open access: yesOpen Mathematics, 2019
In the present paper, the sufficient and necessary conditions of the complete convergence and complete moment convergence for ρ͠-mixing random variables are established, which extend some well-known results.
Zhang Shui-Li, Miao Yu, Qu Cong
doaj   +1 more source

Complete convergence for weighted sums of pairwise independent random variables

open access: yesOpen Mathematics, 2017
In the present paper, we have established the complete convergence for weighted sums of pairwise independent random variables, from which the rate of convergence of moving average processes is deduced.
Ge Li, Liu Sanyang, Miao Yu
doaj   +1 more source

One sided strong laws for random variables with infinite mean

open access: yesOpen Mathematics, 2017
This paper establishes conditions that secure the almost sure upper and lower bounds for a particular normalized weighted sum of independent nonnegative random variables.
Adler André
doaj   +1 more source

Some applications of the Archimedean copulas in the proof of the almost sure central limit theorem for ordinary maxima

open access: yesOpen Mathematics, 2017
Our goal is to state and prove the almost sure central limit theorem for maxima (Mn) of X1, X2, ..., Xn, n ∈ ℕ, where (Xi) forms a stochastic process of identically distributed r.v.’s of the continuous type, such that, for any fixed n, the family of r.v.’
Dudziński Marcin, Furmańczyk Konrad
doaj   +1 more source

Home - About - Disclaimer - Privacy