Testing convex hypotheses on the mean of a Gaussian vector. Application to testing qualitative hypotheses on a regression function. (English) Zbl 1065.62109

Summary: We propose a general methodology, based on multiple testing, for testing that the mean of a Gaussian vector in \(\mathbb{R}^n\) belongs to a convex set. We show that the test achieves its nominal level, and characterize a class of vectors over which the tests achieve a prescribed power. In the functional regression model this general methodology is applied to test some qualitative hypotheses on the regression function. For example, we test that the regression function is positive, increasing, convex, or more generally, satisfies a differential inequality. Uniform separation rates over classes of smooth functions are established and a comparison with other results in the literature is provided. A simulation study evaluates some of the procedures for testing monotonicity.


62H15 Hypothesis testing in multivariate analysis
62G10 Nonparametric hypothesis testing
62G20 Asymptotic properties of nonparametric inference
62J02 General nonlinear regression
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