Video/Slides upload Title: Group Task Assignment with Social Impact-based Preference in Spatial Crowdsourcing Authors: Xiang Li, Yan Zhao, Jiannan Guo and Kai Zheng Paper ID: (Paper ID given by EasyChair/CMT. This number will be used for author verification.) Video file: Uploaded and private public access author access only Slide file: Uploaded and author access only public access author access only Submit