Reinforcement Learning with Discrete Diffusion Policies for Combinatorial Action Spaces. - Haitong Ma; Ofir Nabati; Aviv Rosenberg 002; Bo Dai 001; Oran Lang; Idan Szpektor; Craig Boutilier; Na Li 002; Shie Mannor; Lior Shani; Guy Tenneholtz (CoRR, 2025)