Fang, Zhanhong, Debing Wang, Jinbiao Chen, Jiahai Wang, and Zizhen Zhang. 2026. “UCPO: A Universal Constrained Combinatorial Optimization Method via Preference Optimization”. Proceedings of the AAAI Conference on Artificial Intelligence 40 (43):36900-908. https://doi.org/10.1609/aaai.v40i43.41017.