Large deviation principles for sequences of logarithmically weighted means

被引:8
作者
Giuliano, Rita [2 ]
Macci, Claudio [1 ]
机构
[1] Univ Roma Tor Vergata, Dipartimento Matemat, I-00133 Rome, Italy
[2] Univ Pisa, Dipartimento Matemat L Tonelli, I-56127 Pisa, Italy
关键词
Large deviations; Logarithmically weighted mean; Almost sure central limit theorem; Triangular array; Infinitely divisible distribution; Hellinger distance;
D O I
10.1016/j.jmaa.2011.01.068
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this paper we consider several examples of sequences of partial sums of triangular arrays of random variables {X-n: n >= 1}: in each case X-n converges weakly to an infinitely divisible distribution (a Poisson distribution or a centered Normal distribution). For each sequence we prove large deviation results for the logarithmically weighted means {1/lobn Sigma(n)(k=1) 1/k X-k: n >= 1) with speed function v(n) = logn. We also prove a sample path large {deviation principle for {X-n: n >= 1) defined by X-n(.) = Sigma i=iUi(sigma(2) .)/root n where sigma(2) is an element of (0, infinity) and {Un: n >= .1} is a sequence of independent standard Brownian motions. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:555 / 570
页数:16
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