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The SMART approach to instance-optimal online learning
Feb. 28, 2024, 5:42 a.m. | Siddhartha Banerjee, Alankrita Bhatt, Christina Lee Yu
cs.LG updates on arXiv.org arxiv.org
Abstract: We devise an online learning algorithm -- titled Switching via Monotone Adapted Regret Traces (SMART) -- that adapts to the data and achieves regret that is instance optimal, i.e., simultaneously competitive on every input sequence compared to the performance of the follow-the-leader (FTL) policy and the worst case guarantee of any other input policy. We show that the regret of the SMART policy on any input sequence is within a multiplicative factor $e/(e-1) \approx 1.58$ …
abstract algorithm arxiv case cs.ds cs.it cs.lg data every instance leader math.it online learning performance policy smart traces type via
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