## Computer Science > Artificial Intelligence ## Title:GPEvac: GNN-Based PPO for Adaptive Evacuation Routing During Shooting Events > Abstract:The sharp increase in mass shootings underscores an urgent need for systems that guide victims to safety in real time. An effective evacuation system must minimize threat exposure while also accounting for adversarial uncertainty and crowding dynamics. Current methods in the literature are rigidly constrained to layout-specific policies and computationally intractable in large-scale layouts, while practical guidelines simply advise victims to "run",…