@inproceedings{rootlog, author = {{Negrea}, Jeffrey and {Bilodeau}, Blair and {Campolongo}, Nicol\`{o} and {Orabona}, Francesco and {Roy}, Daniel M.}, title = {Minimax Optimal Quantile and Semi-Adversarial Regret via Root-Logarithmic Regularizers}, year = {2021}, booktitle = {Advances in Neural Information Processing Systems 34} }