The article, ‘Little Exploration is All You Need’, presents a novel modification of the standard UCB (Upper Confidence Bound) algorithm in the multi-armed bandit problem. The authors propose an adjusted bonus term that accounts for the ‘difficulty’ of different options, a factor they argue has been neglected in the prevailing ‘Optimism in the Face of Uncertainty’ principle. Their proposed algorithm, denoted as UCB, demonstrates superior performance and lower risk across various environmental conditions and hyperparameter settings in comparative evaluations.
Publication date: 27 Oct 2023
Project Page: Not provided
Paper: https://arxiv.org/pdf/2310.17538
