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Robust Stochastic Bandit Algorithms under Probabilistic Unbounded Adversarial Attack

AAAI 2020 · Bandits and online learning › Multi-armed bandits · approach: Non-stationary and structured-reward bandits · 25 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use sample medians and periodic diminishing pure exploration in UCBUCB · Stochastic multi-armed bandit under probabilistic unbounded attackspseudo-regretHelped
Use sample medians instead of sample means with ε-greedy explorationε-greedy · Stochastic multi-armed bandit under probabilistic unbounded attackspseudo-regretHelped
Remove periodic pure exploration while retaining median-based UCB (ablation)med-E-UCB · Stochastic multi-armed bandit under probabilistic unbounded attacksregretHurt
Use the med-E-UCB exploration schedule instead of med-ε-greedy explorationMedian-based bandit algorithms · Synthetic simulationsaverage regretHelped
Use median-based robust algorithms instead of the compared existing algorithmsBandit algorithms · Synthetic simulationsaverage regretHelped
Use median-based algorithms instead of α-trimmed UCB or α-trimmed ε-greedyBandit algorithms · Synthetic simulationsaverage regretHelped
Use median-based algorithms instead of RUCB-MAB and mean-based baselinesBandit algorithms · Cognitive radio testbedregretHelped

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