State space modeling of multiple time series: a comment
Authors:
Stefan Mittnik
Affiliation:
State University of New York , Stony Brook
Abstract:
This paper provides guidance in choosing k1 andk2 of the double k-class (KK) estimator such that it will improve upon both the ordinary least squares (OLS) and Stein-rule (SR) estimators in predictive mean squared error (PMSE). Asymptotic bias and mean squared error (MSE) results are derived for nonnormal and other cases. A simulation compares the KK estimator with the OLS and SR estimators.