No-Regret Algorithms for Heavy-Tailed Linear Bandits

  title={No-Regret Algorithms for Heavy-Tailed Linear Bandits},
  author={Andres Mu{\~n}oz Medina and Scott Yang},
We analyze the problem of linear bandits under heavy tailed noise. Most of the work on linear bandits has been based on the assumption of bounded or sub-Gaussian noise. This assumption however is often violated in common scenarios such as financial markets. We present two algorithms to tackle this problem: one based on dynamic truncation and one based on a median of means estimator. We show that, when the noise admits only a 1 + ✏ moment, these algorithms are still able to achieve regret in e O… CONTINUE READING

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