| 一种新的P2P空间矢量数据索引网络的研究* |
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| 引用本文： | 吴家皋,卞超杰,邵世伟,邹志强,胡斌.一种新的P2P空间矢量数据索引网络的研究*[J].计算机应用研究,2011,28(11):4240-4242. |
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| 作者姓名： | 吴家皋 卞超杰 邵世伟 邹志强 胡斌 |
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| 作者单位： | 1. 南京邮电大学计算机学院计算机技术研究所,南京,210003
2. 南京师范大学虚拟地理环境教育部重点实验室,南京,210046 |
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| 基金项目： | 国家“863”计划资助项目(2009AA12Z219)；国家自然科学基金资助项目(40801149)；东南大学计算机网络和信息集成教育部重点实验室开放研究基金资助项目(K93-9-2010-06) |
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| 摘 要： | 针对当前P2PGIS研究在多尺度、多图层空间矢量数据索引方面的不足，从应用实际出发，提出了一种新的P2P空间矢量数据索引网络。该网络扩展了已有的混合式索引网络结构体系，利用金字塔融合多尺度构建分布式四叉索引树；在此基础上，提出相应的分布式空间矢量数据的查询算法，并用数学方法进行了性能分析。原型系统性能测试结果表明，该索引网络能有效地减少网络负担，提高空间索引的效率。
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| 关 键 词： | 对等网络 索引网络 四叉树 Chord 矢量数据 |
Study of new P2P spatial indexing network on vector data |
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| WU Jia-gao,BIAN Chao-jie,SHAO Shi-wei,ZOU Zhi-qiang,HU Bin.Study of new P2P spatial indexing network on vector data[J].Application Research of Computers,2011,28(11):4240-4242. |
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| Authors: | WU Jia-gao BIAN Chao-jie SHAO Shi-wei ZOU Zhi-qiang HU Bin |
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| Affiliation: | WU Jia-gao1,BIAN Chao-jie1,SHAO Shi-wei1,ZOU Zhi-qiang1,HU Bin2(1.Institute of Computer Technology,College of Computer,Nanjing University of Posts & Telecommunications,Nanjing 210003,China,2.Key Laboratory of Virtual Geographic Environment of Ministry of Education,Nanjing Normal University,Nanjing 210046,China) |
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| Abstract: | In allusion to the insufficiency of current P2PGIS researches in space vector data index of multi-scale and multi-la-yer,this paper proposed a new P2P spatial indexing network on vector data in view of practice. This network expanded the existing hybrid indexing network architecture, and built the distributed quad-tree which fused multi-scale using pyramid technology. In addition,this paper proposed a query algorithm for distributed P2P spatial vector data, and analyzed the performance of the algorithm by mathematical method. The testing result of the prototype system shows that the indexing network can reduce network burden and improve indexing efficiency effectively. |
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| Keywords: | P2P indexing network quad-tree Chord vector data |
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