Conceptual information retrieval navigation based on the subject concept tree provides convenience to the user.
基于主题概念树的概念检索导航为用户检索提供了便利。
Association degree of compound concept can be received through the association degree's spread model of subject concept tree.
通过关联度在主题概念树上的传播模型，实现复合概念关联度的计算。
Based on human imitation, a concept hierarch tree based rotational model is developed to choose the final subject words.
提出了一种基于概念层次树的主题词轮排选择的实现算法。
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