Ke-Yan Cao is a Ph.D. can- didate at Northeastern University, Shenyang. Her research interests in- chide data mining, uncertain data management and data stream man- agement. Guo-Ren Wang is a professor and Ph.D. supervisor at Northeast- ern University, and a senior mem- ber of CCF. His research interests in- elude XML data management, query processing and optimization, proba- bilistie database, and bioinformatics. Dong-Hong Hart is an associate professor at Northeastern Uni= versity. Her research interests include data stream management, data mining and uncertain data management. She is a member of CCF. Guo-Hui Ding received his Ph.D. degree ill computer architecture from Northeastern University, Shenyang, in 2012. His main research interests include data mining, data integration, and data space. Ai-Xia Wang received her Ph.D. degree in computer architecture from Northeastern University in 2012. Now she is a lecturer at Northeastern University, Her research interests include pattern recognition and embedded system. Ling-Xu Shi uate at Logistic is an undergrad- Engineering University of People's Liberation Army, Chongqing. His research interests indude data mining, oil information management system, oil depot management, and data stream management.