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A general class of estimators of the extreme value index

โœ Scribed by Holger Drees


Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
816 KB
Volume
66
Category
Article
ISSN
0378-3758

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โœฆ Synopsis


We consider the class of estimators of the extreme value index [~ that can be represented as a scale invariant functional T applied to the empirical tail quantile function Q,. From an approximation of Q,, first asymptotic normality of T(Q~) is derived under quite natural smoothness conditions on 7" if/q is positive. As a consequence, a widely applicable method lbr the construction of estimators with a prescribed asymptotic behavior is introduced. If [ยข ~< 0 then either T :must be location invariant or it has to satisfy a certain regularity condition on a neighborhood of a constant function to ensure asymptotic normality. It turns out that in this situation location invariant estimators are clearly preferable.


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