关于设计一种能把专家的知识传递给用户以帮助其决策的专家系统的想法早在二十年前就出现了。从那时起人们已设计出数量众多的专家系统,这特别是在美国。美国现在正在运行的179个专家系统中(1986年统计)有53个属于医学专家系统,这些案统可帮助诊断和选择医疗方案。联帮德国也在从事专家系统的设计。日本则把工作放在第五代计算机及其软件的研 The idea of ​​designing an expert system that can transfer expert knowledge to users to help them to make decisions emerged as early as twenty years ago. Since then people have designed a large number of expert systems, especially in the United States. Of the 179 expert systems currently in operation in the United States (statistics in 1986), 53 are medical expert systems that can help diagnose and select medical plans. Alliance Germany is also engaged in the design of expert systems. Japan puts its work on the fifth-generation computer and its software