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Frequent Items Computation over Uncertain Wireless Sensor Network
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DOI：10.1109/HIS.2009.156.png)
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Abstract
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There is an increasing interest in uncertain and probabilistics databases arising in application domains such as sensor networks, information retrieval, mobile object data management, information extraction, and data integration. A range of different approaches have been proposed to find the frequent items in uncertain database. But there is little work on processing such query in distributed, in-network inference, such as sensor network. In sensor network, communication is the primary problem because of limited batteries. In this paper, a synopsis with minimum amount tuples is proposed, which sufficient for answering the top-k query. And this synopsis can be dynamic maintained with new tuples been added. A novel communication efficient algorithm is presented In taking advantage of this synopsis. The test results confirm the effectiveness and efficiency of our approaches.
Keywords:
Frequent items Query
Uncertain Data
Sensor network
Distributed Processin
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