...标记语言解析器; K近邻法; 扩展标记语言; 树匹配 [gap=639]Key words：machine learning; XML parser; KNN; XML; tree matching ...
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The edit distance in the classical tree matching algorithm is corrected to adapt for the characteristic of expressions.
根据数学表达式语义的特点，对经典树匹配算法中的编辑距离进行了改进。
参考来源 - 数学表达式数字化处理中关键技术的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
改进了传统的树匹配和动态规划算法。
Improved on the traditional tree matching with dynamic programming algorithm.
实现了XML的树匹配构件匹配检索算法。
This paper implemented the tree matching, component matching and retrieval algorithm.
传统的聚合组播包括三个主要步骤，分别是候选树生成，树选择和组树匹配。
The traditional Aggregated Multicast was divided the problem into three sub-problems, namely, candidate tree generation, tree selection and group-to-tree mapping.
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