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High-probability minimax lower bounds
June 21, 2024, 4:48 a.m. | Tianyi Ma, Kabir A. Verchand, Richard J. Samworth
cs.LG updates on arXiv.org arxiv.org
Abstract: The minimax risk is often considered as a gold standard against which we can compare specific statistical procedures. Nevertheless, as has been observed recently in robust and heavy-tailed estimation problems, the inherent reduction of the (random) loss to its expectation may entail a significant loss of information regarding its tail behaviour. In an attempt to avoid such a loss, we introduce the notion of a minimax quantile, and seek to articulate its dependence on the …
abstract arxiv cs.it cs.lg gold information loss math.it math.st minimax probability random risk robust standard statistical stat.ml stat.th type
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