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Volumes of urban sensing data captured by consumer electronic devices are growing exponentially and current disk-resident database systems are becoming increasingly incapable of handling such large-scale data efficiently. In this paper, we report our design and implementation of U 2 SOD-DB, a columnoriented, Graphics Processing Unit (GPU)-accelerated, inmemory data management system targeted at large-scale ubiquitous urban sensing origin-destination data. Experiment results show that U 2 SOD-DBdoi:10.1145/2346496.2346522 dblp:conf/kdd/ZhangKGG12 fatcat:aqxz5s23jjblziwllw6oc64eje