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随机和的局部精细大偏差 被引量:3

Local Precise Large Deviation Probability for Random Sums
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摘要 利用风险理论讨论了随机和S(t)=i=1∑^N(t)ξi,t≥0中心化的局部精细大偏差问题,得到了对x∈[1(t)+J(t),∞)一致地有P(ξ1+ξ2+…+ξN(t)-ES(t)∈x+△)~nF(x+△),其中{N(t):t≥0}是一个与{ξi:i≥1}独立的泊松过程. By the risk theory the local large deviation for the random sum S(t)=i=1∑^N(t)ξi,t≥0 is discussed. And it is given that for x∈[1(t)+J(t),∞),P(ξ1+ξ2+…+ξN(t)-ES(t)∈x+△)~nF(x+△)consistently conforms to nF ( x + △ ), where { N(t) : t≥ 1} is a Possion process independent of {ξi:i≥1}.
出处 《江西师范大学学报(自然科学版)》 CAS 北大核心 2010年第1期30-36,共7页 Journal of Jiangxi Normal University(Natural Science Edition)
基金 国家自然科学基金(43007201) 江西省自然科学基金(2008GQS0035)资助项目
关键词 随机和 泊松过程 大偏差 局部次指数族 random sum Poisson process large deviation local subexponentiality
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共引文献26

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  • 1苏淳,唐启鹤,江涛.A contribution to large deviations for heavy-tailed random sums[J].Science China Mathematics,2001,44(4):438-444. 被引量:27
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