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    题名: An Approximation Algorithm for Optimizing Multiple Path Tracking Queries over Sensor Data Streams
    作者: 陳良弼
    Chen, Arbee L. P.
    贡献者: 國立政治大學資訊科學系
    关键词: Approximation Algorithm;Optimizing Multiple Path Tracking Queries;Sensor Data Streams
    日期: 2009
    上传时间: 2010-05-27 16:48:50 (UTC+8)
    摘要: Sensor networks have received considerable attention in recent years and played an important role in data collection applications. Sensor nodes have limited supply of energy. Therefore, one of the major design considerations for sensor applications is to reduce the power consumption. In this paper, we study an application that combines RFID and sensor network technologies to provide an environment for moving object path tracking, which needs efficient join processing. This paper considers multi-query optimization to reduce query evaluation cost, and therefore power consumption. We formulate the multi-query optimization problem and present a novel approximation algorithm which provides solutions with suboptimal guarantees. In addition, extensive experiments are made to demonstrate the performance of the proposed optimization strategy. © 2009 Springer Berlin Heidelberg.
    關聯: International Conference and Workshop on Database and Expert Systems Applications
    数据类型: conference
    DOI 連結: http://dx.doi.org/10.1007/978-3-642-03573-9_45
    DOI: 10.1007/978-3-642-03573-9_45
    显示于类别:[資訊科學系] 會議論文

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