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A distributed system for answering range queries on sensor network data

机译:用于回答传感器网络数据范围查询的分布式系统

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摘要

A distributed system for approximate query answering on sensor network data is proposed, where a suitable compression technique is exploited to represent data and support query answering. Each node of the system stores either detailed or summarized sensor readings. Query answers are computed by identifying the set of nodes that contain (either compressed or not) data involved in the query, and eventually partitioning the query in a set of sub-queries to be evaluated at different nodes. Queries are partitioned according to a cost model aiming at making the evaluation efficient and guaranteeing the desired degree of accuracy of query answers.
机译:提出了一种用于对传感器网络数据的近似查询应答的分布式系统,其中利用合适的压缩技术来表示数据和支持查询应答。系统的每个节点存储详细或汇总的传感器读数。通过识别查询中涉及的(压缩或不压缩)数据的节点集来计算查询答案,并最终在要在不同节点处评估的一组子查询中的查询分区。根据旨在使评估的成本模型进行划分查询,并保证查询答复的所需准确度。

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