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Adversarially-Robust Inference on Trees via Belief Propagation
April 2, 2024, 7:50 p.m. | Samuel B. Hopkins, Anqi Li
stat.ML updates on arXiv.org arxiv.org
Abstract: We introduce and study the problem of posterior inference on tree-structured graphical models in the presence of a malicious adversary who can corrupt some observed nodes. In the well-studied broadcasting on trees model, corresponding to the ferromagnetic Ising model on a $d$-regular tree with zero external field, when a natural signal-to-noise ratio exceeds one (the celebrated Kesten-Stigum threshold), the posterior distribution of the root given the leaves is bounded away from $\mathrm{Ber}(1/2)$, and carries nontrivial …
abstract arxiv belief broadcasting cs.ds inference math.pr math.st nodes posterior propagation robust stat.ml stat.th study tree trees type via
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