Park, C. et al. 2026. Think Wise, Collaborate Effectively: A Rationale-Aware LLM-Based Recommender with Reinforcement Learning from Collaborative Signals. Proceedings of the AAAI Conference on Artificial Intelligence. 40, 18 (Mar. 2026), 15609–15616. DOI:https://doi.org/10.1609/aaai.v40i18.38590.