| 一种集成时空数据模型及语义扩展 |
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| 引用本文： | 易宝林,冯玉才,吴永英.一种集成时空数据模型及语义扩展[J].华中科技大学学报(自然科学版),2004,32(7):7-9. |
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| 作者姓名： | 易宝林 冯玉才 吴永英 |
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| 作者单位： | 华中科技大学,计算机科学与技术学院,湖北,武汉,430074;华中科技大学,计算机科学与技术学院,湖北,武汉,430074;华中科技大学,计算机科学与技术学院,湖北,武汉,430074 |
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| 基金项目： | 国家高技术发展研究计划资助项目 (2 0 0 1AA1 35 1 90 0 2 ) |
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| 摘 要： | 采用面向对象的方法提出了一种具有集成特点的时空数据模型．模型分别扩展了空间数据对象和时态数据对象，时空对象是空间对象和时态对象的聚集，空间对象的变化由对象的行为进行描述并以不同的版本表现出来．此外，通过量词符号在时域上的扩充对对象的基本关系进行了语义扩展，在形式上将时态和空间谓词语义统一起来．这种模型能够更好地适应时空信息系统的应用需求．
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| 关 键 词： | 时空数据模型 时空数据库 时空语义 |
| 文章编号： | 1671-4512(2004)07-0007-03 |
| 修稿时间： | 2003年9月4日 |
A model of integrated spatiotemporal data and its semantic extension |
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| Yi Baolin Feng Yucai Wu Yongying Yi Baolin Doctoral Candidate, College of Computer Sci. & Tech.,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..A model of integrated spatiotemporal data and its semantic extension[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2004,32(7):7-9. |
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| Authors: | Yi Baolin Feng Yucai Wu Yongying Yi Baolin Doctoral Candidate College of Computer Sci & Tech Huazhong Univ of Sci & Tech Wuhan China |
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| Institution: | Yi Baolin Feng Yucai Wu Yongying Yi Baolin Doctoral Candidate, College of Computer Sci. & Tech.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | By adopting Object oriented methodologies, an integrated spatiotemporal data model was proposed. The model extended both spatial and temporal abstract data types. In the model, spatiotemporal object was the aggradations of spatial and temporal objects. The changes of spatial object were described by the behaviors of object and indicated by versions of objects. Spatiotemporal semantics of basic relations of objects were discussed through extending temporal character on spatial qualifier. A unified spatial and temporal predicates were proposed to meet the requirements of general spatiotemporal applications. |
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| Keywords: | spatiotemporal data model spatiotemporal databases spatiotemporal semantics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
