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Mobile crowd sensing emerges as a new paradigm which takes advantage of the pervasive sensor-embedded smartphones to collect data efficiently. Many incentive mechanisms for mobile crowd sensing have been proposed. However, none of them takes into consideration the cooperative compatibility of users for multiple cooperative tasks. In this paper, we design truthful incentive mechanisms to minimize the...
We present a file reordering method to improve runtime I/O efficiency for out-of-core streamline computation. Because of the increasing discrepancy between the speed of computation and that of I/O on multi-core machines, the cost of I/O becomes a major bottleneck for out-of-core computation. Among techniques that reduce runtime I/O cost, reordering file layout to increase data locality has become...
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