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An Exponential Inequality for U-Statistics with Applications to Testing*

Published online by Cambridge University Press:  27 July 2009

Peter J. Bickel
Affiliation:
Department of Statistics, University of California, Berkeley, California 94720
Ya'acov Ritov
Affiliation:
Department of Statistics, The Hebrew University, 91905 Jerusalem, Israel

Abstract

We present a new exponential inequality for degenerate U-statistics. The bound on the tail probability is quadratic for small to medium values of the deviation and linear for larger values. We apply this bound to a family of test statistics and provide the key step in an optimality result for adaptive tests [1].

Type
Research Article
Copyright
Copyright © Cambridge University Press 1995

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