Enhancing fire evacuation safety in metro stations: multi-agent reinforcement learning-guided dynamic signage coordination. - Botao Zhang 003; Shuzhi Pan; Qihua Chen; Shuaidong Lu; Tie-Qiao Tang; Yuxin Zhang; Xianfei Yin; Huaguo Chen; Chuan-Zhi Thomas Xie (Comput. Ind. Eng., 2026)