BBAuthors: Khezerlou, Amin Vahedian; Advisor: -; Participants: Zhou, Xun; Tong, Ling; Li, Yanhua; Luo, Jun (2019)
Identifying urban gathering events is an important problem due to challenges it brings to urban management. Recently, we proposed a hybrid model (H-VIGO-GIS) to predict future gathering events through trajectory destination prediction. Our approach consisted of two models: historical and recent and continuously predicted future gathering events. However, H-VIGO-GIS has limitations. (1) The recent model does not capture the newly-emerged abnormal patterns effectively, since it uses all recent trajectories, including normal ones. (2) The recent model is sparse due to limited number of trajectories it learns, i.e. it cannot produce predictions in many cases, forcing us to rely only on th... 
