Martingale transforms goodness-of-fit tests in regression models

Details Martingale transforms goodness-of-fit tests in regression models Martingale transforms goodness-of-fit tests in regression models

2004-06-25

arxiv.org/abs/math/0406518v1

Annals of Statistics 2004, Vol. 32, No. 3, 995-1034

Mathematics

Statistics Theory

Scientific paper

10.1214/009053604000000274

This paper discusses two goodness-of-fit testing problems. The first problem pertains to fitting an error distribution to an assumed nonlinear parametric regression model, while the second pertains to fitting a parametric regression model when the error distribution is unknown. For the first problem the paper contains tests based on a certain martingale type transform of residual empirical processes. The advantage of this transform is that the corresponding tests are asymptotically distribution free. For the second problem the proposed asymptotically distribution free tests are based on innovation martingale transforms. A Monte Carlo study shows that the simulated level of the proposed tests is close to the asymptotic level for moderate sample sizes.

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