采用模糊数学中模式识别方法对专题地图统计数据进行分级，并定义了分级精度标准的计算公式。
Statistical data of thematic maps are graded with the method of model distinguishing in mathematics, and a formula for the standard of grading accuracy is given.
主题地图是描述知识结构、知识与信息资源之间联系的元数据标准。
Topic maps is a new ISO standard for describing knowledge structures and associating them with information resources.
在系统开发中使用XML作为数据交换标准，实现元数据存储，并进行地图文件配置。
The paper discusses how to apply XML in WebGIS, such as how to exchange data in XML, how to presentation metadata in XML, and how to configure map files in XML.
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