LogicReward: Incentivizing LLM Reasoning via Step-Wise Logical Supervision - Xu, Jundong; Fei, Hao (Scofield); Zhou, Huichi; Quan, Xin; Huang, Qijun; Wu, Shengqiong; Wang, William; Lee, Mong-Li; Hsu, Wynne (International Conference on Learning Representations, 2026)