本文运用树形结构原理，对汉语主题词范畴索引进行了计算机模型设计。
A computer model of category index for Chinese thesaurus is designed by using a tree structure in this paper.
根据XML树形结构的特点，提出了XML结构相似度计算方法以及XML树结构融合算法。
According to the character of XML tree, a method for computing the similarity of XML structure and an algorithm of XML structure fusion are presented.
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