Study On Expert System Based On Internet And Component

Expert system is an important subject which developing rapidly recent years. Using it to reconstruct and support agricultural development has become a very attentive work at present. Since the agriculture has lower content of technology and worse base of information technology in our country, advancing agriculture intellectualized information technology (AIIT) gains immense economic and social benefits in 21st century. So the research gets government's support, recognition of science and technology dept., and the welcome coming from the grass roots. With the research object "handling system of Chongqing AIIT section" sponsored by 863, the article makes a series of research on platform-based agriculture expert system.In the article, the architecture and function of the platform for agriculture development are described. It supports network and component development Key techniques, running environment, interface standard, extension and application are expatiated. We have analyzed the system structure of computer network and the character of required services provided by AIIT, constructed internet-based computer agriculture information network and devised expert system matching it. An open and flexible architecture for general component expert system development platform based on author's former expert system development works is proposed. This architecture supports customized, composed and cooperated developing for detail expert system designer. The expert system constructing problem is divided into three levels, they are constructing function component, composing single expert system and assembling distributed agent system. According with the analysis of the architecture of expert system platform, three software models to compose different layers of the expert system are built up.Finally, this article gave the implementation of the expert system. The software structure referenced the Browser/Server model in popular network techniques. The browser software was a Web browser, Microsoft Internet Explorer (IE). The server software was Microsoft Internet Information Server (IIS). In the model,expert system software developed secondly on the side of the server software; Active Server Pages (ASP) cooperated with Component Object Model (COM) in implementing the expert system.