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research article

Stochastic derivative estimation for max-stable random fields

Koch, Erwan  
•
Robert, Christian Y.
October 16, 2022
European Journal Of Operational Research

We consider expected performances based on max-stable random fields and we are interested in their derivatives with respect to the spatial dependence parameters of those fields. Max-stable fields, such as the Brown-Resnick and Smith fields, are very popular in spatial extremes. We focus on the two most popular unbiased stochastic derivative estimation approaches: the likelihood ratio method (LRM) and the infinitesimal perturbation analysis (IPA). LRM requires the multivariate density of the max-stable field to be explicit, and IPA necessitates the computation of the derivative with respect to the parameters for each simulated value. We propose convenient and tractable conditions ensuring the validity of LRM and IPA in the cases of the Brown-Resnick and Smith field, respectively. Obtaining such conditions is intricate owing to the very structure of max-stable fields. Then we focus on risk and dependence measures, which constitute one of the several frameworks where our theoretical results can be useful. We perform a simulation study which shows that both LRM and IPA perform well in various configurations, and provide a real case study that is valuable for the insurance industry. (C) 2021 The Authors. Published by Elsevier B.V.

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Type
research article
DOI
10.1016/j.ejor.2021.12.026
Web of Science ID

WOS:000829764400012

Author(s)
Koch, Erwan  
Robert, Christian Y.
Date Issued

2022-10-16

Publisher

ELSEVIER

Published in
European Journal Of Operational Research
Volume

302

Issue

2

Start page

575

End page

588

Subjects

Management

•

Operations Research & Management Science

•

Business & Economics

•

robustness and sensitivity analysis

•

infinitesimal perturbation analysis

•

likelihood ratio method

•

max-stable random fields

•

risk assessment

•

extreme values

•

simulation

•

multivariate

•

inference

•

model

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
STAT  
Available on Infoscience
August 15, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/189994
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