Expert system is a branch of artificial intelligence, its development speed is very fast, the application of expert systemalready permeate ,such numerous fields as physics , chemistry , medical science ,etc.. Almost all the expert systems can bring people's efficiency up to about 10 times at least.
This system utilizes PowerBuilder 9.0 according to the theory knowledge of artificial intelligence and expert system.The purpose of the system is to realize the diagnosis and treatment of diabetes in order to utilize computer simulation human expert.
The paper introduce the principle and structure of expert system , It explained the design of knowledge base, reasoning machine , database , interactive interface, explaining device and implementation method in detail. During the development the expert system I use all I have learnt to make the system run correctly and eccectively.
Key word: Expert system, the database , PowerBuilder, artificial intelligence
尽管人工智能已经创造了一些实用系统,但人们不得不承认这些远未达到人类的智能水平。正因为如此,就选择人工智能研究的最佳方法—既为人工智能的最终研究目标打好基础,又能创造出短期效益—存在大量的讨论和争辩。这样,在过去的四十年里涌现出大量方法,每一种方法均有其拥护者,有些甚至有趣得令人爱不释手。也许所有这些方法应该综合起来运用。总之,所有这些拥护者都认为自己的研究方法具有突破性进展,值得特别关注。其中的一些方法可分为两大类。第一类包括符号处理的方法。它们基于N e w e l l和S i m o n的物理符号系统的假说。尽管不是所有人都赞同这一假说,但几乎大多数被称为“经典的人工智能”(即哲学家John Haugeland所谓的“出色的老式人工智能”或G O FA I)均在其指导之下。