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Asymptotically Optimal Tests and Optimal Designs for Testing the Mean in Regression Models with Applications to Change-Point Problems

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Abstract

Let a linear regression model be given with an experimental region [a, b] → R and regression functions f 1, ..., f d+1 : [a, b] → R. In practice it is an important question whether a certain regression function f d+1, say, does or does not belong to the model. Therefore, we investigate the test problem H 0 : "f d+1 does not belong to the model" against K : "f d+1 belong to the model" based on the least-squares residuals of the observations made at design points of the experimental region [a, b]. By a new functional central limit theorem given in Bischoff (1998, Ann. Statist. 26, 1398–1410), we are able to determine optimal tests in an asymptotic way. Moreover, we introduce the problem of experimental design for the optimal test statistics. Further, we compare the asymptotically optimal test with the likelihood ratio test (F-test) under the assumption that the error is normally distributed. Finally, we consider real change-point problems as examples and investigate by simulations the behavior of the asymptotic test for finite sample sizes. We determine optimal designs for these examples.

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Authors and Affiliations

  1. Institute of Mathematical Stochastics, Department of Mathematics, University of Karlsruhe, D-76128, Karlsruhe, Germany

    Wolfgang Bischoff & Frank Miller

Authors
  1. Wolfgang Bischoff
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  2. Frank Miller
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Bischoff, W., Miller, F. Asymptotically Optimal Tests and Optimal Designs for Testing the Mean in Regression Models with Applications to Change-Point Problems. Annals of the Institute of Statistical Mathematics 52, 658–679 (2000). https://doi.org/10.1023/A:1017521225616

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  • DOI: https://doi.org/10.1023/A:1017521225616

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