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专家系统又称知识系统,它在两个方面不同于传统的计算机。第一,专家软件不划分应用程序和操作系统,其次,它是由知识库和推理机组成。知识库包含事实和特定问题的规则;推理机则计算各条规则的值。高级的专家系统常常把元规则与与问题有关的规则分开。由于元规则决定推理机调用问题规则的策略,所以元规则与问题规则分开,增加了系统的灵活性。
Expert system, also known as knowledge system, it differs from the traditional computer in two aspects. First, expert software does not divide applications and operating systems, and secondly, it consists of knowledge bases and reasoning machines. The knowledge base contains rules of facts and specific problems; inference engines calculate the value of each rule. Advanced expert systems often separate meta-rules from rules-related rules. Since the meta-rules determine the strategy of the inference engine to invoke the problem rules, the meta-rules are separated from the problem rules, increasing the flexibility of the system.