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Exact bounds on the truncated-tilted mean, with applications
I. Pinelis Department of Mathematical Sciences, Michigan Technological University, Houghton, MI, USA
Abstract:
Exact upper bounds for ${\mathbf{E} Xe^{h(X\wedge w)}}/{\mathbf{E}
e^{h(X\wedge w)}}$, which is the expectation of the Cramér transform of the
so-called Winsorized-tilted mean of a random variable, are given in terms of
its first two moments. Such results are needed in work with nonuniform
Berry–Esseen-type bounds for general nonlinear statistics. As another
application, optimal upper bounds on the Bayes posterior mean are provided.
Certain monotonicity properties of the tilted mean are also presented.
Keywords:
exact bound, Winsorization, truncation, large deviation, nonuniform Berry–Esseen-type bounds, Cramér transform, monotonicity,
Bayes posterior mean.
Received: 05.04.2016 Revised: 17.04.2018 Accepted: 20.12.2017
Citation:
I. Pinelis, “Exact bounds on the truncated-tilted mean, with applications”, Teor. Veroyatnost. i Primenen., 63:3 (2018), 545–564; Theory Probab. Appl., 63:3 (2019), 447–463
Linking options:
https://www.mathnet.ru/eng/tvp5174https://doi.org/10.4213/tvp5174 https://www.mathnet.ru/eng/tvp/v63/i3/p545
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