A Spatial-Temporal Graph Mining Algorithm based on Spatial-Temporal Sparse Attention Network XIE Yi1, WANG Qiang2, LI Haihong2, JIN Cheng2, REN Hongrun1, XUE Wen1, XIONG Yun1 (1. Shanghai Key Laboratory of Data Science, School of Computer Science, Fudan University, Shanghai 200433, China; 2. Shanghai Center for Meteorological Disaster Prevention Technology,