| 空间数据立方体的物化视图选择方法研究 |
| |
| 引用本文： | 樊博,李一军.空间数据立方体的物化视图选择方法研究[J].高技术通讯,2003,13(9):16-20. |
| |
| 作者姓名： | 樊博 李一军 |
| |
| 作者单位： | 哈尔滨工业大学管理学院,哈尔滨,150001 |
| |
| 基金项目： | 863计划(2001AA136010)，国家自然科学基金(70171013)资助项目。 |
| |
| 摘 要： | 针对决策支持系统(DSS)中集成空间分析能力的应用趋势，研究基于空间数据仓库的一种决策分析工具——空间在线分析处理(Spatial OLAP)，拟解决影响空间OLAP在线响应的瓶颈难点——空间数据立方体的物化问题。首先系统地提出空间OLAP的模型，然后对现有空间度量物化视图选择方法进行改进，提出了双向空间Greedy算法。实验证明．该算法在降低选择时间和求解质量两方面具有更好的表现。
|
| 关 键 词： | 数据立方体 物化视图选择 决策支持系统 空间OLAP 模型 Greedy算法 格 数据仓库 |
The Research on Materialization View Selection Method of Spatial Data Cube |
| |
| Fan Bo,Li Yijun.The Research on Materialization View Selection Method of Spatial Data Cube[J].High Technology Letters,2003,13(9):16-20. |
| |
| Authors: | Fan Bo Li Yijun |
| |
| Abstract: | The integration of spatial data and decision support system(DSS) is urgently needed to provides spatial analytical function and visualization to user. This article investigates a decision analytical tool based on spatial data warehouse--on-line analytical processing (OLAP) and mainly solves the serious problem of slow response time in spatial data cube operation by improving materialization view selection method on spatial measures. The model of spatial OLAP is put forward systematically. Then a new method named double spatial greedy is poposed, which has the advantages of deducing view selection time as well as improving the quality of view selection result. |
| |
| Keywords: | On-line analytical processing(OLAP) Spatial ckta cube Materialization view selection Spatial OLAP |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
