On these basis, the paper studies and analyzes the design of knowledge base of network intrusion detection system (NIDS); and discuss the framework of knowledge base for NIDS.
在此基础上，论文对网络入侵检测系统(NIDS)的知识库设计进行了分析和研究，对NIDS的知识库进行构架。
With the study of knowledge engineering design, stress analyzed knowledge acquisition knowledge representation and knowledge base in knowledge engineering besides the application in system.
通过对基于知识工程的设计的研究，重点分析了知识工程中的知识获取、知识表示和知识库等重要理论以及在系统中的应用；
Finally, the thesis develops expert system of engine fault diagnosis, and introduces setting-up and maintenance of knowledge base, design of reasoning mechanism and so on in detail.
最后，课题对发动机故障诊断专家系统进行了开发，并详细介绍了知识库的建立和维护、推理机制的设计等。
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