ON ADAPTIVE ESTIMATION BASED ON RANKS IN ARMA PROCESSES
J. Allal
A. Kaaouachi
S. Melhaoui
Abstract: This paper describes the adaptive estimation problem based on ranks for the
parameter of an ARMA process. The local asymptotic normality property with a ranked
based central sequence allows for the construction of estimators which are locally
asymptotically minimax (LAM). By using a consistent estimate of the score function, we
obtain the adaptive estimators which are LAM and which do not depend on the innovation
density.
1991 AMS Mathematics Subject Classification: Primary: -; Secondary: -;
Key words and phrases: Local asymptotic normality (LAN), asymptotic linearity,
locally asymptotically minimax (LAM), adaptivity.