摘要： 目前专家系统的解释大多都是静态的，不能根据规则动态生成规则含义。这样容易造成知识规则和规则含义之间的不一致。该根据在地震预报专家系统中的实践，提出了一种基于“F 树”的规则含义生成方法，力图为进一步探索基于语义的解释提供一定的基础。

关键词: F 树；语义基元；专家系统；解释

Abstract: At present, lots of explanation of ES is canned text, which fail to generate rule meanings from rule formal representation automatically. Therefore, the coherence between formal rule and its meanings can’t be maintained. Based on “F-tree”, this paper proposes a method of rule meanings generation, which has been applied in expert system for earthquake prediction (ESEP 3.1). This research will favor further exploring of semantic explanation in expert systems.

Key words: F-tree; Semantic unit; Expert system; Explanation