The two-sample problem for Poisson processes: adaptive tests with a non-asymptotic wild bootstrap approach

Details The two-sample problem for Poisson processes: adaptive tests with a non-asymptotic wild bootstrap approach The two-sample problem for Poisson processes: adaptive tests with a non-asymptotic wild bootstrap approach

2012-03-15

arxiv.org/abs/1203.3572v1

Mathematics

Statistics Theory

Scientific paper

Considering two independent Poisson processes, we address the question of testing equality of their respective intensities. We construct multiple testing procedures from the aggregation of single tests whose testing statistics come from model selection, thresholding and/or kernel estimation methods. The corresponding critical values are computed through a non-asymptotic wild bootstrap approach. The obtained tests are proved to be exactly of level $\alpha$, and to satisfy non-asymptotic oracle type inequalities. From these oracle type inequalities, we deduce that our tests are adaptive in the minimax sense over a large variety of classes of alternatives based on classical and weak Besov bodies in the univariate case, but also Sobolev and anisotropic Nikol'skii-Besov balls in the multivariate case. A simulation study furthermore shows that they strongly perform in practice.

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