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Real-time identification and monitoring of abnormal events based on microblog and emergency call data using SMART. - Zhang, Jiawei; Afzal, Shehzad; Breunig, Dallas; Xia, Jing; Zhao, Jieqiong; Sheeley, Isaac; Christopher, Joseph; Ebert, David S.; Guo, Chen; Xu, Shang; Yu, Jim; Wang, Qiaoying; et al. (2014)