Categories bandit Beyond task diversity - Provable representation transfer for sequential multi-task linear bandits Non-stationary Bandits and Meta-Learning with a Small Set of Optimal Arms meta-learning Beyond task diversity - Provable representation transfer for sequential multi-task linear bandits Non-stationary Bandits and Meta-Learning with a Small Set of Optimal Arms reinforcement learning Beyond task diversity - Provable representation transfer for sequential multi-task linear bandits Non-stationary Bandits and Meta-Learning with a Small Set of Optimal Arms representation learning Beyond task diversity - Provable representation transfer for sequential multi-task linear bandits