| 一种在移动GIS环境下基于R树的并行窗口查询系统模型 |
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| 引用本文： | 徐少文,刘新华.一种在移动GIS环境下基于R树的并行窗口查询系统模型[J].九江师专学报,2007,26(6):24-27. |
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| 作者姓名： | 徐少文 刘新华 |
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| 作者单位： | [1]九江学院信息科学与技术学院,江西九江332005 [2]江西省教育厅计财处,江西南昌330000 |
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| 摘 要： | 窗口查询（Window Query）是移动地理信息系统（Mobile Geographic Information System）各类具体应用中的核心功能。为了提高移动GIS系统的查询效率（I／O开销、响应时间、丢失率），本文对实时环境下窗口查询分解、调度和并行处理等问题做了阐述，讨论了基于内存R树（Memory R—tree）实现并行窗口查询的方法。
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| 关 键 词： | 移动地理信息系统 R树 I／O开销 |
| 文章编号： | 1673-4580（2007）06-0024-（04） |
| 收稿时间： | 2007-03-07 |
AN PARALLEL WINDOW QUERY BASED ON MEMORY R- TREE IN MOBILE GIS ENVIRONMENT |
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| XU Shao - wen ; LIU Xin - hua.AN PARALLEL WINDOW QUERY BASED ON MEMORY R- TREE IN MOBILE GIS ENVIRONMENT[J].Journal of Jiujiang Teacher's College,2007,26(6):24-27. |
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| Authors: | XU Shao - wen ; LIU Xin - hua |
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| Abstract: | Window Query is core Function in various of Mobiel GIS applications, In this paper, authors elaborated how multiple window queries could be parallelized, decomposed, scheduled and processed in realtime workloads to optimize GIS system query effciency, such as I/O cost, response time and miss rate, and dicussed the method of implementing parallel widow query based on Memory R - tree. |
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| Keywords: | mobile GIS R- trees I/O cost |
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