Qiang Zhou 0007 Jingjing Gu Xinjiang Lu Fuzhen Zhuang Yanchao Zhao Qiuhong Wang Xiao Zhang 0015 Modeling Heterogeneous Relations across Multiple Modes for Potential Crowd Flow Prediction. 4723-4731 2021 AAAI https://doi.org/10.1609/aaai.v35i5.16603 conf/aaai/2021 db/conf/aaai/aaai2021.html#ZhouGLZZWZ21