Agricultural Expert System Development Tool Based On Component Design And Realization

In recent years.the technology of Expert System has been broadly used in agriculture life in china; It has gained remarkable application effect in high yield, high quality, high efficiency and supported development agriculture. And because COM technology's development and using, Software Reuse has been greatly realized.This paper described the essential theory of Expert System, and many kinds of knowledge expression, such as producing rule, Semantic network Frame, Predicate logic, and knowledge expression in home. And it recommended many kinds of reasoning technology, such as positive chain, inverse chain, uncertainty reasoning. It depicted principle , essential character of COM and realization of COM.Through attending the natual fond item ' the research of Yunnan agriculture expert system development tool based on component, I studied and analysised the DET2.0, the agriculture expert system development tool used by 863 plan intelligence agriculture information technology -Yunnan province demonstration section,including system structure,knowledge base compile and reasoning mechanism. According to the analysis result, I designed the system structure of DET based on component,using knowledge expression of DET2.0 , and realized many components, such as the component of editing , compiling of knowledge base, component of reasoning mechanism.