摘要
知识表示和匹配是设计专家系统的核心问题;首先通过引入基元理论,实现了产生式、语义网络、框架和案例的基元表示,建立了故障诊断专家系统的可拓知识表示模型,该模型包括激励基元、测量基元和结论基元3个部分;然后提出了先匹配激励基元再匹配测量基元的可拓知识匹配步骤,并构建了属性精确值和区间值混合的匹配度计算公式;最后以某型大气数据计算机的测试数据为例,与建立的可拓知识进行匹配,诊断结果与实际情况相符。
Knowledge representation and matching are key problems of expert system. By inducting basic--element theory, the basic-- element representation of production, semantic network, frame and case are fulfilled, and extension knowledge representation model of diag- nostic expert system is set up, which contains source, test and result three basic--element. The matching process needs two steps, first match source basic--element, second match test basic--element. At last, the test data of an air data computer is used to match the extension knowledge. The results are consistent with the fact.
出处
《计算机测量与控制》
北大核心
2014年第6期1670-1672,1686,共4页
Computer Measurement &Control
基金
总装武器装备预研基金项目(9140A27020212JB14311)
关键词
可拓
故障诊断
专家系统
知识表示
知识匹配
extension
fault diagnosis
expert system
knowledge representat!on
knowledge matching
