On Goodness-of-fit Testing for Ergodic Diffusion Process with Shift Parameter

Details On Goodness-of-fit Testing for Ergodic Diffusion Process with Shift Parameter On Goodness-of-fit Testing for Ergodic Diffusion Process with Shift Parameter

2012-03-29

arxiv.org/abs/1203.6547v1

Mathematics

Statistics Theory

Scientific paper

A problem of goodness-of-fit test for ergodic diffusion processes is presented. In the null hypothesis the drift of the diffusion is supposed to be in a parametric form with unknown shift parameter. Two Cramer-Von Mises type test statistics are studied. The first one is based on local time estimator of the invariant density, the second one is based on the empirical distribution function. The unknown parameter is estimated via the maximum likelihood estimator. It is shown that both the limit distributions of the two test statistics do not depend on the unknown parameter, so the distributions of the tests are asymptotically parameter free. Some considerations on the consistency of the proposed tests and some simulation studies are also given.

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