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Making Progress Based on False Discoveries. (arXiv:2204.08809v1 [cs.LG])
April 20, 2022, 1:12 a.m. | Roi Livni
cs.LG updates on arXiv.org arxiv.org
We consider the question of adaptive data analysis within the framework of
convex optimization. We ask how many samples are needed in order to compute
$\epsilon$-accurate estimates of $O(1/\epsilon^2)$ gradients queried by
gradient descent, and we provide two intermediate answers to this question.
First, we show that for a general analyst (not necessarily gradient descent)
$\Omega(1/\epsilon^3)$ samples are required. This rules out the possibility of
a foolproof mechanism. Our construction builds upon a new lower bound (that may
be of …
More from arxiv.org / cs.LG updates on arXiv.org
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