Online Agnostic Boosting via Regret Minimization
Online Agnostic Boosting via Regret Minimization
复制标题
通过后悔最小化进行在线不可知提升
DOI:
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复制
发表时间:
2020
期刊:
影响因子:
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通讯作者:
S. Moran
中科院分区:
文献类型:
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作者:
Nataly Brukhim;Xinyi Chen;Elad Hazan;S. Moran
Boosting is a widely used machine learning approach based on the idea of aggregating weak learning rules. While in statistical learning numerous boosting methods exist both in the realizable and agnostic settings, in online learning they exist only in the realizable case. In this work we provide the first agnostic online boosting algorithm; that is, given a weak learner with only marginally-better-than-trivial regret guarantees, our algorithm boosts it to a strong learner with sublinear regret.
Our algorithm is based on an abstract (and simple) reduction to online convex optimization, which efficiently converts an arbitrary online convex optimizer to an online booster.
Moreover, this reduction extends to the statistical as well as the online realizable settings, thus unifying the 4 cases of statistical/online and agnostic/realizable boosting.
DOI:
10.1109/focs.2019.00015
发表时间:
2019-04
期刊:
2019 IEEE 60th Annual Symposium on Foundations of Computer Science (FOCS)
影响因子:
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作者:
Matthew Joseph;Jieming Mao;Seth Neel;Aaron Roth
通讯作者:
Matthew Joseph;Jieming Mao;Seth Neel;Aaron Roth