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Randomized and exchangeable improvements of Markov's, Chebyshev's and Chernoff's inequalities

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If you have a question about this talk, please contact Qingyuan Zhao .

We present simple randomized and exchangeable improvements of Markov’s inequality, as well as the related Chebyshev’s and Chernoff’s inequalities (like Hoeffding’s and Bernstein’s), for example. Our variants are never worse and typically strictly more powerful than the original inequalities, which can be recovered as simple corollaries. The proofs are short and somewhat elementary. We provide several simple statistical applications involving e-values, such as uniformly improving the power of universal inference, and tighter nonparametric confidence intervals based on betting.

This is joint work with Tudor Manole, a PhD student at CMU . A preprint is at https://arxiv.org/abs/2304.02611.

This talk is part of the Statistics series.

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CMS MR9 Department of Engineering / Online (Zoom) Goldsmiths' 1 Lecture Theatre (0_017), Department of Materials Science and Metallurgy, 27 Charles Babbage Road, Cambridge. CB3 0FS

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