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Hidden regular variation of moving average processes with heavy-tailed innovations

Published online by Cambridge University Press:  30 March 2016

Sidney I. Resnick
Affiliation:
School of Operations Research and Industrial Engineering, Cornell University, Ithaca, NY 14853, USA. Email address: [email protected].
Joyjit Roy
Affiliation:
School of Operations Research and Industrial Engineering, Cornell University, Ithaca, NY 14853, USA. Email address: [email protected].
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Abstract

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We look at joint regular variation properties of MA(∞) processes of the form X = (Xk, kZ), where Xk = ∑j=0ψjZk-j and the sequence of random variables (Zi, iZ) are independent and identically distributed with regularly varying tails. We use the setup of MO-convergence and obtain hidden regular variation properties for X under summability conditions on the constant coefficients (ψj: j ≥ 0). Our approach emphasizes continuity properties of mappings and produces regular variation in sequence space.

Type
Part 6. Heavy tails
Copyright
Copyright © Applied Probability Trust 2014 

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