多自治空间数据源的k邻近查询处理

k-NN Query Processing for Multi-autonomous Spatial Data Sources

多自治空间数据源的k邻近查询处理在空间信息领域具有广泛的应用。综合分析比较现有的查询处理算法,研究并提出了多自治空间数据源环境下k邻近查询处理框架及其实现算法。实验结果表明,所提出的算法能有效地减少k邻近查询处理系统的数据传输量,减少了系统响应时间。

k-NN query based on multi-autonomous spatial data source is widely used in spatial information realm.In this paper,incorporating existing k-NN query algorithm,a new k-NN query framework for multi-autonomous spatial data sources and its implement algorithm,is proposed.The experiment results show that the method performs well both in data transmission volume and corresponding time of the k-NN query system.