Risk-Averse Multi-Armed Bandit Problems under Mean-Variance Measure.

The multi-armed bandit (MAB) problems have been studied mainly under the measure of expected total reward accrued over a horizon of length T . In this paper, we address the issue of risk in MAB problems and develop parallel results under the measure of mean-variance, a commonly adopted risk measure in economics and mathematical finance. We show that the model-specific regret and the model-independ...