Zhou, Q., Gu, J., Lu, X., Zhuang, F., Zhao, Y., Wang, Q. and Zhang, X. 2021. Modeling Heterogeneous Relations across Multiple Modes for Potential Crowd Flow Prediction. Proceedings of the AAAI Conference on Artificial Intelligence. 35, 5 (May 2021), 4723-4731. DOI:https://doi.org/10.1609/aaai.v35i5.16603.