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    鲁大伟

    • 教授     博士生导师 硕士生导师
    • 任职 : 统计与金融研究所所长
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:数学科学学院
    • 学科:概率论与数理统计. 金融数学与保险精算
    • 办公地点:数学楼512

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    Precise large deviation for the difference of two sums of random variables

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      发布时间:2019-03-09

      论文类型:期刊论文

      发表时间:2016-01-17

      发表刊物:COMMUNICATIONS IN STATISTICS-THEORY AND METHODS

      收录刊物:EI、SCIE

      卷号:45

      期号:2

      页面范围:291-306

      ISSN号:0361-0926

      关键字:Consistently varying tailed distributions; Difference of two sums of heavy-tailed random variables; Heavy-tailed; Precise large deviations

      摘要:Assume that there are two types of insurance contracts in an insurance company. The ith related claims are denoted by {X-ij, j >= 1}, i = 1, 2. In this paper, we investigate large deviations for the difference Sigma(n1(t))(j=1) X-1j - Sigma(n2(t))(j = 1) X-2j and random difference Sigma X-N1(t)(j = 1)1j - Sigma(N2(t))(j = 1) X-2j, where n(i)(t) are positive integer functions as t -> infinity, n(i)(t) ->infinity, i = 1, 2. N-i(t), i = 1, 2 are counting processes for the claim number.