所有资料经预处理后，导入SQL2000数据库，利用其中的数据挖掘工具——微软决策树进行分类节点变量的选取，以此构建病例组合。
After pretreatment, the data were loaded in SQL2000 server database. We established the case mix of the inpatient using the grouping node selected by decision tree.
最终，算法抵达的叶子节点就是最终分类。
Eventually, the algorithm reaches a leaf node with the final classification.
点击词汇就将显示一个页面，其中显示用这个词汇分类的所有节点。
Clicking on the term will display a page with all nodes that are categorized with that term.
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