针对空间数据集的特性，提出一种基于空间局部偏离因子(SLDF)的离群点检测算法。
According to the characteristics of spatial data sets, this paper proposes an outlier detection algorithm based on the Space Local Deviation Factor (SLDF).
引入了一种新的基于网格的数据压缩方法，并应用该方法对处理大型空间数据集的聚类算法SGR IDS进行研究。
By introducing a new grid-based data compression framework, conducted the study on the clustering algorithm SGRIDS which dealed with a large spatial databases.
通过空间数据集和目标操作日志表创造性地将地理对象的空间信息和时态信息分开，又通过目标标识和版本号联系在一起。
Spatial information and temporal information of geo-objects are split by spatial dataset and objects operation log, and they are integrated with object identifications and versions.
点和区间混合型维度数据集是空间数据库系统和GIS中重要的数据对象。
Data sets of point and interval dimensions are important in spatial database system and GIS.
重点介绍了EOO格式的空间数据规格定义以及向GML格式转换处理过程，并以福建省主要公路数据集为样本数据验证了集成结果。
The spatial data specification of EOO and its conversion to GML format is discussed and the data integration result was validated with Fujian Major Highway database as a sample database.
为实现空间数据共享，需要描述空间数据或数据集的内容、质量、状态和其他特性的数据，这就是元数据。
To share space data, it is necessary to describe space data or the content, quality and mode of a data set and other characteristic data. This is the element data.
为了描述空间数据的模糊性，把模糊集理论引入GIS，以加强GIS对模糊现象建模的能力，因而产生了模糊数据。
In order to enhance the ability of modeling fuzzy phenomena, the fuzzy set theory is introduced into GIS, which produces fuzzy spatial data.
在空间数据库中，对采用r树类型索引存储的数据集给出了三个查询处理算法。
For data sets indexed by R-trees in spatial databases, three algorithms are presented for answering this kind of query.
在空间数据库中，对采用r树类型索引存储的数据集给出了三个查询处理算法。
For data sets indexed by R-trees in spatial databases, three algorithms are presented for answering this kind of query.
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