2015 IEEE International Conference on Smart City - SmartCity 2015 19-21 December 2015, Chengdu, China : Held Jointly with the 8th IEEE International Conference on Social Computing and Networking (SocialCom 2015), the 5th IEEE International Conference on Sustainable Computing and Communications (SustainCom 2015), the 2015 International Conference on Big Data Intelligence and Computing (DataCom 2015), the 5th International Symposium on Cloud and Service Computing (SC2 2015) : Proceedings