Authors
Xinyu Zhang, Alan TK Wan, Sherry Z Zhou
Publication date
2012/1/1
Journal
Journal of Business & Economic Statistics
Volume
30
Issue
1
Pages
132-142
Publisher
Taylor & Francis
Description
Claeskens and Hjort have developed a focused information criterion (FIC) for model selection that selects different models based on different focused functions with those functions tailored to the parameters singled out for interest. Hjort and Claeskens also have presented model averaging as an alternative to model selection, and suggested a local misspecification framework for studying the limiting distributions and asymptotic risk properties of post-model selection and model average estimators in parametric models. Despite the burgeoning literature on Tobit models, little work has been done on model selection explicitly in the Tobit context. In this article we propose FICs for variable selection allowing for such measures as mean absolute deviation, mean squared error, and expected expected linear exponential errors in a type I Tobit model with an unknown threshold. We also develop a model average Tobit …
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