An overview and open research topics in statistics of univariate extremes

J Beirlant, F Caeiro, MI Gomes - REVSTAT-Statistical Journal, 2012 - revstat.ine.pt
This review paper focuses on statistical issues arising in modeling univariate extremes of a
random sample. In the last three decades there has been a shift from the area of parametric …

A review of more than one hundred Pareto-tail index estimators

I Fedotenkov - Statistica, 2020 - rivista-statistica.unibo.it
Heavy-tailed distributions are often encountered in economics, finance, biology,
telecommunications, geology, etc. The heaviness of a tail is measured by a tail index …

[PDF][PDF] A new class of semi-parametric estimators of the second order parameter

MIF Alves, MI Gomes, L de Haan - Portugaliae Mathematica, 2003 - academia.edu
The main goal of this paper is to develop, under a semi-parametric context, asymptotically
normal estimators of the second order parameter ρ, a parameter related to the rate of …

A simple generalisation of the Hill estimator

MF Brilhante, MI Gomes, D Pestana - Computational Statistics & Data …, 2013 - Elsevier
The classical Hill estimator of a positive extreme value index (EVI) can be regarded as the
logarithm of the geometric mean, or equivalently the logarithm of the mean of order p= 0, of a …

A Sturdy Reduced-Bias Extreme Quantile (VaR) Estimator

MI Gomes, D Pestana - Journal of the American Statistical …, 2007 - Taylor & Francis
Please see the supplementary material for an important correction. The main objective of
statistics of extremes lies in the estimation of quantities related to extreme events. In many …

The bootstrap methodology in statistics of extremes—choice of the optimal sample fraction

MI Gomes, O Oliveira - Extremes, 2001 - Springer
The main objective of statistics of extremes is the prediction of rare events, and its primary
problem has been the estimation of the tail index γ, usually performed on the basis of the …

Tail index estimation for heavy-tailed models: accommodation of bias in weighted log-excesses

M Ivette Gomes, L De Haan… - Journal of the Royal …, 2008 - academic.oup.com
We are interested in the derivation of the distributional properties of a weighted log-
excesses estimator of a positive tail index γ. One of the main objectives of such an estimator …

Improving second order reduced bias extreme value index estimation

MI Gomes, MJ Martins, MM Neves - REVSTAT-Statistical Journal, 2007 - revstat.ine.pt
Classical extreme value index estimators are known to be quite sensitive to the number k of
top order statistics used in the estimation. The recently developed second order reduced …

Reduced-bias tail index estimators under a third-order framework

F Caeiro, MI Gomes, LH Rodrigues - Communications in Statistics …, 2009 - Taylor & Francis
In this article, we are interested in the comparison, under a third-order framework, of classes
of second-order, reduced-bias tail index estimators, giving particular emphasis to minimum …

Semi-parametric estimation of the second order parameter in statistics of extremes

MI Gomes, L Haan, L Peng - Extremes, 2002 - Springer
We present a class of semi-parametric estimators for the second order parameter related to
a probability distribution with a regularly varying tail. The second order parameter plays an …