Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1150093 | Journal of Statistical Planning and Inference | 2007 | 22 Pages |
Abstract
This paper is concerned with the problem of constructing a good predictive distribution relative to the Kullback-Leibler information in a linear regression model. The problem is equivalent to the simultaneous estimation of regression coefficients and error variance in terms of a complicated risk, which yields a new challenging issue in a decision-theoretic framework. An estimator of the variance is incorporated here into a loss for estimating the regression coefficients. Several estimators of the variance and of the regression coefficients are proposed and shown to improve on usual benchmark estimators both analytically and numerically. Finally, the prediction problem of a distribution is noted to be related to an information criterion for model selection like the Akaike information criterion (AIC). Thus, several AIC variants are obtained based on proposed and improved estimators and are compared numerically with AIC as model selection procedures.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Tatsuya Kubokawa, Hisayuki Tsukuma,