通常情况下，分类法专家会研究现有的数据库、Web站点、组织图表、产品线、其他遗留数据库、词汇列表和产品文档，从而了解现有的分类。

Typically, taxonomists look at existing databases, Web sites, organizational charts, product lines, other legacy databases, term lists, and product documentation to tease out existing categories.

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本文研究三种在近邻分类法基础上的改进算法：（1）编辑技术，（2）边界抽取，（3）边界补缀。

This paper analysis three different kinds of improved algorithms based onthe K-NN classification:(1) Editing technique, (2) Boundary extraction, (3) Boundarypatching.

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因此本文对我国应用五级分类法的现状进行研究。

So this paper chooses the application of the Five-class Classification in China.

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