（计算机解析图结构模型的开销通常比较大） 概念图（ Conceptual Graphs ， CG ）：概念图是 Sowa 教授提出的基于图的本体描述语言 [84][85] 。
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This rule is a hybrid knowledge representation method that the premise, conclusion and advice of the rules are conceptual graphs.
扩展产生式规则将规则的前提、结论和建议分别用概念图表示，是一种混合知识表示方法。
Based on formal concept analysis, contexts are described as a tuple of two sets of conceptual graphs, which are called intention and extension respectively.
借鉴形式概念分析的理论，用二元组表示形式背景，能够体现出形式背景的内涵与外延的统一。
Firstly the paper analyzes the defect of technique of the VSM model. And then put forward one technique based - on semantic for relevance feedback, using the knowledge of conceptual graphs.
文中从基于向量空间的反馈技术的分析入手，利用概念图的知识，提出了基于语义的相关反馈技术。
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