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Bounds on the Jensen Gap, and Implications for Mean-Concentrated Distributions

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arxiv 1712.05267 v5 pith:YLV3T6XQ submitted 2017-12-11 math.PR

classification math.PR
keywords boundsfunctionrandomvaluevariabledistributionsexpectedjensen
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This paper gives upper and lower bounds on the gap in Jensen's inequality, i.e., the difference between the expected value of a function of a random variable and the value of the function at the expected value of the random variable. The bounds depend only on growth properties of the function and specific moments of the random variable. The bounds are particularly useful for distributions that are concentrated around the mean, a commonly occurring scenario such as the average of i.i.d. samples and in statistical mechanics.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Physics-Informed Distillation of Diffusion Models for PDE-Constrained Generation

    cs.LG 2025-05 conditional novelty 6.0 of 10

    Post-hoc distillation with a PDE-residual loss on final samples avoids the Jensen gap and yields one-step physics-constrained generation.

  2. Taming Recommendation Bias with Causal Intervention on Evolving Personal Popularity

    cs.IR 2025-05 conditional novelty 5.0 of 10

    CausalEPP adds a user-side time-varying popularity preference to causal debiasing for recommenders, gaining a few percent in recall over prior debiasing baselines.

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