Domains of attraction for exponential families

August A. Balkema, Claudia Klüppelberg, Sidney I. Resnick

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

With the df F of the rv X we associate the natural exponential family of df's Fλ where dFλ (x)=eλx dF(x)/EeλX for λ∈Λ:={λ∈ℝ EeλX<∞}. Assume λ=sup Λ≤∞ does not lie in Λ. Let λ↑λ, then non-degenerate limit laws for the normalised distributions Fλ(aλx+bλ) are the normal and gamma distributions. Their domains of attractions are determined. Applications to saddlepoint and gamma approximations are considered.

Original languageEnglish
Pages (from-to)83-103
Number of pages21
JournalStochastic Processes and their Applications
Volume107
Issue number1
DOIs
StatePublished - 1 Sep 2003

Keywords

  • Asymptotic normality
  • Convex conjugate
  • Domain of attraction
  • Esscher transform
  • Exponential family
  • Gamma distribution
  • Laplace transform
  • Normal distribution
  • Regular variation
  • Self-neglecting
  • Strongly unimodal

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