The level conception is delivered in the knowledge expression method, which raises the infer efficiency and reduces the search range of rules greatly.
在知识表达中提出级别的概念，极大地提高了推理效率，缩小了规则搜索范围。
This thesis also deeply studied knowledge expression method, the mode of establishing knowledge base, the realization method of inference mechanism under O-O environment.
深入研究了在面向对象的环境下，专家系统中知识表达的实用形式、知识库的建立模式以及推理机制的具体实现方法；
The key technology of testability intelligent design includes 3 aspects, that is, the knowledge expression method, the knowledge acquiring approaches and the knowledge application.
测试性智能设计的关键技术，包括知识表示方法、知识获取途径和知识应用三方面。
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