The GPH-estimator of spatial long memory parameter is investigated for stationary long memory (long range dependent) random fields observed over a regular lattice point set. Under some mild regularity assumptions. the weak consistency of the estimator is obtained. The finite sample performance of the estimator is discussed through a small simulation Study. (C) 2009 Elsevier B.V. All rights reserved.
机构:
Vilnius Univ, Fac Math & Informat, Naugarduko 24, LT-03225 Vilnius, LithuaniaVilnius Univ, Fac Math & Informat, Naugarduko 24, LT-03225 Vilnius, Lithuania