摘要
GML是一种基@XML的标记性语言，包含有大量的空间信息，不同GML可能来源于不同的数据源，并且它们的模式也很可能不同，因此我们经常需要对GML文档进行数据集成处理。因而模式匹配就是其数据集成环节中必不可少的一步。该文设计了GML的模式匹配器，其方法是首先把GML模式转化为GML模式树，然后计算两个GML模式树的结构和语义的相似度来判断两个GML模式的相似程度，该系统在界面上也着重体现了这两个部分。
The complexity and richness of spatial data models and geographic information systems（GISs）together with the popularity of WWW have led to an increasing number of heterogeneous and autonomous geo-referenced information sources that spread over Internet. To integrate and publish geographic information, a challenge is to match schemas between two arbitrary GML documents. In this paper, An GML schema matching processor supporting spatial information integration is designed, in which document schema is first transformed to a tree. and then a similarity formula is introduced to measure the semantic and structural matching degrees of two documents based on the transformed trees.
作者
王向峰
陈辉
WANG Xiang-feng, CHEN Hui （Department of Computer Science and Technology, Tongji University, Shanghai 201804, China）
出处
《电脑知识与技术》
2012年第3期1496-1499,共4页
Computer Knowledge and Technology
关键词
GML
空间数据集成
模式匹配器
GML
spatial information integration
schema matching processor
