期刊名称：Discussion Papers in Economics / Department of Economics, University of York
出版年度：2015
卷号：2015
出版社：University of York
摘要：We consider fixed-b and fixed-m asymptotics for the Diebold and Mariano (1995) test of predictive accuracy. We show that this approach allows to obtain predictive accuracy tests that are correctly sized even in small samples. We apply the alternative asympotics for the Diebold and Mariano (1995) test to evaluate the predictive accuracy of the Survey of Professional Forecasters (SPF) against a simple random walk. Our results show that the predictive ability of the SPF was partially spurious, especially in the last decade.
关键词：Diebold and Mariano test; long run variance estimation; fixed-b and fixed-m asymptotic theory; SPF.
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