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LARGE DEVIATIONS AND MODERATE DEVIATIONS FOR m-NEGATIVELY ASSOCIATED RANDOM VARIABLES 被引量:7
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作者 胡亦钧 明瑞星 杨文权 《Acta Mathematica Scientia》 SCIE CSCD 2007年第4期886-896,共11页
M-negatively associated random variables, which generalizes the classical one of negatively associated random variables and includes m-dependent sequences as its particular case, are introduced and studied. Large devi... M-negatively associated random variables, which generalizes the classical one of negatively associated random variables and includes m-dependent sequences as its particular case, are introduced and studied. Large deviation principles and moderate deviation upper bounds for stationary m-negatively associated random variables are proved. Kolmogorov-type and Marcinkiewicz-type strong laws of large numbers as well as the three series theorem for m-negatively associated random variables are also given. 展开更多
关键词 negatively associated random variables stationary sequence strong law of large numbers large deviations moderate deviations
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MODERATE DEVIATIONS AND LARGEDE VIATIONS FOR A TEST OF SYMMETRY BASED ON KERNEL DENSITY ESTIMATOR 被引量:5
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作者 何晓霞 高付清 《Acta Mathematica Scientia》 SCIE CSCD 2008年第3期665-674,共10页
Let fn be a non-parametric kernel density estimator based on a kernel function K. and a sequence of independent and identically distributed random variables taking values in R. The goal of this article is to prove mod... Let fn be a non-parametric kernel density estimator based on a kernel function K. and a sequence of independent and identically distributed random variables taking values in R. The goal of this article is to prove moderate deviations and large deviations for the statistic sup |fn(x) - fn(-x) |. 展开更多
关键词 Symmetry test kernel estimator moderate deviations large deviations
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MODERATE DEVIATIONS FOR PARAMETER ESTIMATORS IN FRACTIONAL ORNSTEIN-UHLENBECK PROCESS 被引量:4
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作者 高付清 蒋辉 汪宝彬 《Acta Mathematica Scientia》 SCIE CSCD 2010年第4期1125-1133,共9页
We study moderate deviations for estimators of the drift parameter of the fractional Ornstein-Uhlenbeck process. Two moderate deviation principles are obtained.
关键词 Large deviations moderate deviations Ornstein-Uhlenbeck process
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MODERATE DEVIATIONS FROM HYDRODYNAMIC LIMIT OF A GINZBURG-LANDAU MODEL 被引量:2
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作者 王霞 高付清 《Acta Mathematica Scientia》 SCIE CSCD 2006年第4期691-701,共11页
The authors consider the moderate deviations of hydrodynamic limit for Ginzburg-Landau models. The moderate deviation principle of hydrodynamic limit for a specific Ginzburg-Landau model is obtained and an explicit fo... The authors consider the moderate deviations of hydrodynamic limit for Ginzburg-Landau models. The moderate deviation principle of hydrodynamic limit for a specific Ginzburg-Landau model is obtained and an explicit formula of the rate function is derived. 展开更多
关键词 Hydrodynamic limit large deviations moderate deviations Ginzburg-Landau model
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CENTRAL LIMIT THEOREM AND MODERATE DEVIATIONS FOR A CLASS OF SEMILINEAR STOCHASTIC PARTIAL DIFFERENTIAL EQUATIONS
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作者 胡淑兰 李瑞囡 王新宇 《Acta Mathematica Scientia》 SCIE CSCD 2020年第5期1477-1494,共18页
In this paper we prove a central limit theorem and a moderate deviation principle for a class of semilinear stochastic partial differential equations, which contain the stochastic Burgers’ equation and the stochastic... In this paper we prove a central limit theorem and a moderate deviation principle for a class of semilinear stochastic partial differential equations, which contain the stochastic Burgers’ equation and the stochastic reaction-diffusion equation. The weak convergence method plays an important role. 展开更多
关键词 stochastic Burgers'equation stochastic reaction-diffusion equation large deviations moderate deviations
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MODERATE DEVIATIONS FOR THE BESSEL CLOCK
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作者 王艳清 蒋辉 《Acta Mathematica Scientia》 SCIE CSCD 2010年第5期1605-1613,共9页
By the method of change measures, the moderate deviations for the Bessel clock ∫t0ds/xs(v) is studied, where (Xt(v), t ≥0) is a squared Bessel process with index v 〉 0. Xs The rate function can be given expl... By the method of change measures, the moderate deviations for the Bessel clock ∫t0ds/xs(v) is studied, where (Xt(v), t ≥0) is a squared Bessel process with index v 〉 0. Xs The rate function can be given explicitly. Furthermore, the functional moderate deviations for the Bessel clock are obtained. 展开更多
关键词 Bessel process Brownian motion moderate deviations
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Large Deviations and Moderate Deviations for the Chi-Square Test in Type Ⅱ Error
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作者 JIANG Hui GAO Fuqing 《Wuhan University Journal of Natural Sciences》 CAS 2008年第2期129-132,共4页
We study the asymptotics tot the statistic of chi-square in type Ⅱ error. By the contraction principle, the large deviations and moderate deviations are obtained, and the rate function of moderate deviations can be c... We study the asymptotics tot the statistic of chi-square in type Ⅱ error. By the contraction principle, the large deviations and moderate deviations are obtained, and the rate function of moderate deviations can be calculated explicitly which is a squared function. 展开更多
关键词 large deviations moderate deviations chi-square test
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LARGE DEVIATIONS AND MODERATE DEVIATIONS FOR SUMS OF NEGATIVELY DEPENDENT RANDOM VARIABLES 被引量:1
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作者 刘莉 万成高 冯艳钦 《Acta Mathematica Scientia》 SCIE CSCD 2011年第1期344-352,共9页
In this article, we obtain the large deviations and moderate deviations for negatively dependent (ND) and non-identically distributed random variables defined on (-∞, +∞). The results show that for some non-ide... In this article, we obtain the large deviations and moderate deviations for negatively dependent (ND) and non-identically distributed random variables defined on (-∞, +∞). The results show that for some non-identical random variables, precise large deviations and moderate deviations remain insensitive to negative dependence structure. 展开更多
关键词 Large deviation moderate deviation negative dependence non-identical distribution
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Berry-Esseen bounds and moderate deviations for the norm, entries and spectral radius of products of positive random matrices
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作者 Hui Xiao Ion Grama Quansheng Liu 《Science China Mathematics》 SCIE CSCD 2024年第3期627-646,共20页
Let(g_(n))_(n≥1) be a sequence of independent and identically distributed positive random d×d matrices and consider the matrix product G_(n)=g_(n)…g_1.Under suitable conditions,we establish the Berry-Esseen bou... Let(g_(n))_(n≥1) be a sequence of independent and identically distributed positive random d×d matrices and consider the matrix product G_(n)=g_(n)…g_1.Under suitable conditions,we establish the Berry-Esseen bounds on the rate of convergence in the central limit theorem and Cramer-type moderate deviation expansions,for any matrix norm ‖G_(n)‖ of G_(n),its entries G_(n)^(i,j) and its spectral radius ρ(G_(n)).Extended versions of their joint law with the direction of the random walk G_(n)x are also established,where x is a starting point in the unit sphere of R~d. 展开更多
关键词 Berry-Esseen bound Cramér-type moderate deviation product of random matrices operator norm ENTRY spectral radius
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Moderate Deviations for Parameter Estimation in the Fractional Ornstein–Uhlenbeck Processes with Periodic Mean
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作者 Hui JIANG Shi Min LI Wei Gang WANG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2024年第5期1308-1324,共17页
In this paper,we study the asymptotic properties for the drift parameter estimators in the fractional Ornstein-Uhlenbeck process with periodic mean function and long range dependence.The Cremér-type moderate devi... In this paper,we study the asymptotic properties for the drift parameter estimators in the fractional Ornstein-Uhlenbeck process with periodic mean function and long range dependence.The Cremér-type moderate deviations,as well as the moderation deviation principle with explicit rate function can be obtained. 展开更多
关键词 Cramér-type moderate deviation fractional Ornstein-Uhlenbeck process parameter estimation multiple Wiener-Ito integrals
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Moderate Deviations for Random Sums of Heavy-Tailed Random Variables 被引量:5
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作者 Fu Qing GAO 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2007年第8期1527-1536,共10页
Let {Xn;n≥ 1} be a sequence of independent non-negative random variables with common distribution function F having extended regularly varying tail and finite mean μ = E(X1) and let {N(t); t ≥0} be a random pro... Let {Xn;n≥ 1} be a sequence of independent non-negative random variables with common distribution function F having extended regularly varying tail and finite mean μ = E(X1) and let {N(t); t ≥0} be a random process taking non-negative integer values with finite mean λ(t) = E(N(t)) and independent of {Xn; n ≥1}. In this paper, asymptotic expressions of P((X1 +… +XN(t)) -λ(t)μ 〉 x) uniformly for x ∈[γb(t), ∞) are obtained, where γ〉 0 and b(t) can be taken to be a positive function with limt→∞ b(t)/λ(t) = 0. 展开更多
关键词 large deviations moderate deviations extended regular variation Poisson process
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Deviation inequalities for quadratic Wiener functionals and moderate deviations for parameter estimators 被引量:3
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作者 GAO FuQing JIANG Hui 《Science China Mathematics》 SCIE CSCD 2017年第7期1181-1196,共16页
We study deviation inequalities for some quadratic Wiener functionals and moderate deviations for parameter estimators in a linear stochastic differential equation model.Firstly,we give some estimates for Laplace inte... We study deviation inequalities for some quadratic Wiener functionals and moderate deviations for parameter estimators in a linear stochastic differential equation model.Firstly,we give some estimates for Laplace integrals of the quadratic Wiener functionals by calculating the eigenvalues of the associated HilbertSchmidt operators.Then applying the estimates,we establish deviation inequalities for the quadratic functionals and moderate deviation principles for the parameter estimators. 展开更多
关键词 quadratic Winer functional Laplace integral moderate deviations parameter estimator
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Moderate Deviations for M-estimators in Linear Models with φ-mixing Errors 被引量:2
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作者 Jun FAN 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2012年第6期1275-1294,共20页
In this paper, the moderate deviations for the M-estimators of regression parameter in a linear model are obtained when the errors form a strictly stationary Ф-mixing sequence. The results are applied to study many d... In this paper, the moderate deviations for the M-estimators of regression parameter in a linear model are obtained when the errors form a strictly stationary Ф-mixing sequence. The results are applied to study many different types of M-estimators such as Huber's estimator, L^P-regression estimator, least squares estimator and least absolute deviation estimator. 展开更多
关键词 moderate deviations M-ESTIMATOR least absolute deviation estimator linear regression
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SMALL PERTURBATION CRAMER METHODS AND MODERATE DEVIATIONS FOR MARKOV PROCESSES 被引量:2
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作者 高付清 《Acta Mathematica Scientia》 SCIE CSCD 1995年第4期394-405,共12页
This paper presents a small perturbation Cramer method for obtaining the large deviation principle of a family of measures (β,ε> 0) on a topological vector space. As an application, we obtain the moderate deviati... This paper presents a small perturbation Cramer method for obtaining the large deviation principle of a family of measures (β,ε> 0) on a topological vector space. As an application, we obtain the moderate deviation estimations for uniformly ergodic Markov processes. 展开更多
关键词 Large deviations Cramer methods Markov processes moderate deviations.
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Large Deviations and Moderate Deviations for Kernel Density Estimators of Directional Data 被引量:1
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作者 Fu Qing GAO Li Na LI 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2010年第5期937-950,共14页
Let fn be the non-parametric kernel density estimator of directional data based on a kernel function K and a sequence of independent and identically distributed random variables taking values in d-dimensional unit sp... Let fn be the non-parametric kernel density estimator of directional data based on a kernel function K and a sequence of independent and identically distributed random variables taking values in d-dimensional unit sphere Sd-1. It is proved that if the kernel function is a function with bounded variation and the density function f of the random variables is continuous, then large deviation principle and moderate deviation principle for {sup x∈sd-1 |fn(x) - E(fn(x))|, n ≥ 1} hold. 展开更多
关键词 kernel density estimator directional data moderate deviations large deviations
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Moderate Deviations for Stochastic Models of Two-Dimensional Second-Grade Fluids Driven by Lévy Noise
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作者 Wuting Zheng Jianliang Zhai Tusheng Zhang 《Communications in Mathematics and Statistics》 SCIE 2018年第4期583-612,共30页
In this paper,we establish a moderate deviation principle for stochastic models of two-dimensional second-grade fluids driven by Lévy noise.We will adopt the weak convergence approach.Because of the appearance of... In this paper,we establish a moderate deviation principle for stochastic models of two-dimensional second-grade fluids driven by Lévy noise.We will adopt the weak convergence approach.Because of the appearance of jumps,this result is significantly different from that in Gaussian case. 展开更多
关键词 moderate deviations Second-grade fluids Lévy process Weak convergence method
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Moderate deviations for neutral functional stochastic differential equations driven by Levy noises
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作者 Xiaocui MA Fubao XI Dezhi LIU 《Frontiers of Mathematics in China》 SCIE CSCD 2020年第3期529-554,共26页
Using the weak convergence method introduced by A.Budhiraja,P.Dupuis,and A.Ganguly[Ann.Probab.,2016,44:1723-1775],we establish the moderate deviation principle for neutral functional stochastic differential equations ... Using the weak convergence method introduced by A.Budhiraja,P.Dupuis,and A.Ganguly[Ann.Probab.,2016,44:1723-1775],we establish the moderate deviation principle for neutral functional stochastic differential equations driven by both Brownian motions and Poisson random measures. 展开更多
关键词 moderate deviations neutral functional stochastic dierential equations Poisson random measure
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Moderate Deviations for a Test of Symmetry Based on Deconvolution Kernel Density Estimators
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作者 ZHAO Shoujiang LIU Qiaojing 《Wuhan University Journal of Natural Sciences》 CAS 2011年第2期143-147,共5页
Suppose that Y1 , Y2 , , Yn are independent and identically distributed n observations from convolution model Y = X + ε, where X is an unobserved random variable with unknown density f X,and ε is the measurement er... Suppose that Y1 , Y2 , , Yn are independent and identically distributed n observations from convolution model Y = X + ε, where X is an unobserved random variable with unknown density f X,and ε is the measurement error with a known density function. Set f n ( x )to be a nonparametric kernel density estimator of f X,and the pointwise and uniform moderate deviations of statistic sup x∈ R | f n ( x ) f n( x) |are given by Gine and Guillou's exponential inequality. 展开更多
关键词 moderate deviations deconvolution estimators symmetry test
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Convergence Rates for Probabilities of Moderate Deviations for Moving Average Processes 被引量:14
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作者 Ping Yan CHEN Ding Cheng WANG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2008年第4期611-622,共12页
The present paper first shows that, without any dependent structure assumptions for a sequence of random variables, the refined results of the complete convergence for the sequence is equivalent to the corresponding c... The present paper first shows that, without any dependent structure assumptions for a sequence of random variables, the refined results of the complete convergence for the sequence is equivalent to the corresponding complete moment convergence of the sequence. Then this paper investigates the convergence rates and refined convergence rates (or complete moment convergence) for probabilities of moderate deviations of moving average processes. The results in this paper extend and generalize some well-known results. 展开更多
关键词 complete convergence complete moment convergence moderate deviation law of the iterated logarithm invariance principle moving average process
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Moderate Deviations for Marked Hawkes Processes
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作者 Youngsoo SEOL 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2017年第10期1297-1304,共8页
We consider a linear Hawkes process with random marks. Some limit theorems have been studied by Karabash and Zhu [Stoch. Models, 31,433-451 (2015)]. In this paper, we obtain a moderate deviation principle for marked... We consider a linear Hawkes process with random marks. Some limit theorems have been studied by Karabash and Zhu [Stoch. Models, 31,433-451 (2015)]. In this paper, we obtain a moderate deviation principle for marked Hawkes processes. 展开更多
关键词 Marked Hawkes processes self-exciting processes moderate deviation principles largedeviations Hawkes processes
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