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专家系统是知识工程系统中的一个主要类型。第一代知识工程系统主要是由手工方式用一般高级程序语言开发出来的应用专家系统。它存在着重复劳动多、研制周期长、质量不稳定的缺点。近年来又发展了第二代知识工程系统,也就是专家系统工具。实际上,专家系统工具是辅助专家系统建造的软件环境。一般都提供一种或几种知识表示方法,优化的推理机和各种支援设施。有了它,人们可以避免大量的重复性劳动。人们只
Expert system is one of the main types in knowledge engineering system. The first generation of knowledge engineering systems were mainly application expert systems developed by hand in general high-level programming languages. It has the shortcomings of repeated labor, long development cycle and unstable quality. In recent years has developed a second-generation knowledge engineering system, which is expert system tools. In fact, expert system tools are software environments built to assist expert systems. One or several methods of knowledge representation, optimized reasoning engines, and various support facilities are generally provided. With it, people can avoid a lot of repetitive work. People only