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论文类型：期刊论文

发表时间：2011-04-01

发表刊物：ICIC Express Letters

收录刊物：EI、Scopus

卷号：5

期号：4 B

页面范围：1347-1352

ISSN号：1881803X

摘要：If the data are organized effectively in spatial networks, it is possible to reduce the cost of the aggregate network operations during query processing. So different techniques based on the clustering graph model are proposed to solve the spatial network clustering problem. However, the clustering graph model can not correctly capture the disk access costs of aggregate network operations. Thus, we propose an improved clustering approach to overcome the shortcomings of graph clustering model. The proposed approach aims to minimize the total number of disk page accesses in aggregate network operations while reducing the number of allocated disk pages as far as possible. The experimental results show that the proposed approach is very effective in reducing the number of disk accesses incurred by the network operations. ICIC International ? 2011.