Shenggong Ji

Learn More
Urban sensing is a foundation of urban computing, collecting data in cities through ubiquitous computing techniques, e.g. using humans as sensors. In this paper, we propose a crowd-based urban sensing framework that maximizes the coverage of collected data in a spatio-temporal space, based on human mobility of participants recruited by a given budget. This(More)
Emergency medical service provides a variety of services for those in need of emergency care. One of the major challenges encountered by emergency service providers is selecting the appropriate locations for ambulance stations. Prior works measure spatial proximity under Euclidean space or static road network. In this paper, we focus on locating the(More)
Social networks constitute a new platform for information propagation, but its success is crucially dependent on the choice of spreaders who initiate the spreading of information. In this paper, we remove edges in a network at random and the network segments into isolated clusters. The most important nodes in each cluster then form a group of influential(More)
School of Information Science and Technology, Sun Yat-sen University, Guangzhou 510006, China School of Mathematics, Southwest Jiaotong University, Chengdu 610031, China Institute of High Performance Computing, A*STAR, 138632 Singapore LPT, École Normale Supérieure, UMR 8549 CNRS, 24 Rue Lhomond, 75005 Paris, France Dipartimento di Fisica,Sapienza(More)
X iv :1 40 1. 46 80 v3 [ ph ys ic s. so cph ] 2 2 Ja n 20 14 Bootstrap Percolation on Complex Networks with Community Structure Chong Wu1, Shenggong Ji1, Rui Zhang1,2,3, Liujun Chen4,∗ Jiawei Chen4, Xiaobin Li1, and Yanqing Hu1† 1School of Mathematics, Southwest Jiaotong University, Chengdu 610031, China 2Levich Institute and Physics Department, City(More)
  • 1