By using the path implication closure as a tool, the algorithm cannot only effectively eliminate redundant nodes or predicates, but also identify invalid path expressions.
该算法以路径蕴涵闭包为工具，不仅可以删除路径表达式的冗余，还可以识别无效路径表达式。
Based on the definition of XFD, the inference rules for XML and logical implication is studied, and a set of inference rules, a path closure algorithm and membership algorithm are presented, an.
在这种XFD定义的基础上研究了XML的推理规则和逻辑蕴涵问题，提出了一组推理规则集并证明了推理规则的正确性和完备性，给出了求解路径闭包算法和成员籍算法。
Based on the definition of XFD, the inference rules for XML and logical implication is studied, and a set of inference rules, a path closure algorithm and membership algorithm are presented, an.
在这种XFD定义的基础上研究了XML的推理规则和逻辑蕴涵问题，提出了一组推理规则集并证明了推理规则的正确性和完备性，给出了求解路径闭包算法和成员籍算法。
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