Zhao, Yi, et al. “LaF-GRPO: In-Situ Navigation Instruction Generation for the Visually Impaired via GRPO With LLM-As-Follower Reward”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 40, no. 41, Mar. 2026, pp. 34994-02, doi:10.1609/aaai.v40i41.40804.