REBEL: Reinforcement Learning via Regressing Relative Rewards - Gao, Zhaolin; Chang, Jonathan D.; Zhan, Wenhao; Oertell, Owen; Swamy, Gokul; Brantley, Kianté; Joachims, Thorsten; Bagnell, J. Andrew; Lee, Jason D.; Sun, Wen (Advances in Neural Information Processing Systems, 2024)