On the asymptotic behavior of change-point estimators in case of no change with applications to testing

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

Let Xin,..., Xnn, n є IN, be independent random elements with values in a measurable space. Suppose that for some θ є (0,1], X1n,..., X[nθ],n have distribution v1 and X[nθ]+1,n)..., Xnn have distribution v2≠v1, both unknown. We investigate an estimator θn for the change-point θ if actually no change has occured, i.e. θ=1 and all data Xin are i.i.d.. We prove that θn converges in law to the uniform distribution on (0,1). Furthermore, with probability one the sequence (θn)nєIN does not converge. The first result leads to a test of Kolmogorov-Smirnov type for the test problem H0:θ=1 versus H1:θ є (0,1). The test is baaed on θn and involves a resampling method. We show that it is an asymptotic level-α test, which is consistent on a large class of alternatives.

Details

OriginalspracheEnglisch
Seiten (von - bis)137-144
Seitenumfang8
FachzeitschriftStatistics & risk modeling : with applications in finance and insurance
Jahrgang14
Ausgabenummer2
PublikationsstatusVeröffentlicht - 1996
Peer-Review-StatusJa

Schlagworte

Schlagwörter

  • bootstrap test, change-point estimation, minimizer of the Brownian Bridge

Bibliotheksschlagworte