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Improved Certified Defenses against Data Poisoning with (Deterministic) Finite Aggregation. (arXiv:2202.02628v2 [cs.LG] UPDATED)
June 29, 2022, 1:11 a.m. | Wenxiao Wang, Alexander Levine, Soheil Feizi
stat.ML updates on arXiv.org arxiv.org
Data poisoning attacks aim at manipulating model behaviors through distorting
training data. Previously, an aggregation-based certified defense, Deep
Partition Aggregation (DPA), was proposed to mitigate this threat. DPA predicts
through an aggregation of base classifiers trained on disjoint subsets of data,
thus restricting its sensitivity to dataset distortions. In this work, we
propose an improved certified defense against general poisoning attacks, namely
Finite Aggregation. In contrast to DPA, which directly splits the training set
into disjoint subsets, our method first …
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