Model-free Posterior Sampling via Learning Rate Randomization - Tiapkin, Daniil; Belomestny, Denis; Calandriello, Daniele; Moulines, Eric; Munos, Remi; Naumov, Alexey; Perrault, Pierre; Valko, Michal; Ménard, Pierre (Advances in Neural Information Processing Systems, 2023)