Research And Design Of Expert System Based On .NET Framework

An expert system (ES) is a computer program that is designed to emulate the logic and reasoning processes that an expert would use to solve a problem in his/her field of expertise,using artificial intelligence technology. The research and application of expert system have become the researching focus of the artificial intelligence of the world. Agriculture Weather Disaster Evaluating Expert System(AWDEES) is brought forward under the condition of weather disaster happened very continually and brought fatal damage every year in Anhui province, so it is of very important practical value to evaluate agriculture weather disaster exactly in time.Microsoft .NET platform provides a very good basic system platform for expert system development; .NET platform provides integrated development environment that can build XML Web Service and integrate Web Service into expert system; .NET system framework considers the framework capability development deployment management and support etc. of expert system synthetically; with .NET enterprise solution patterns applying and expanding in building expert system, expert system based on Microsoft .NET system framework has better expansibility reliability security and management.MVC pattern, Three-Layered Services Application pattern and XML Web Service are firstly introduced; and then relational knowledge of knowledge base and reasoning machine in expert system and its applying in AWDEES are introduced; lastly research and application of these patterns and architecture based on Microsoft .NET Framework by an example of AWDEES are discussed. The system can separate business transaction from client interaction and reasoning machine from knowledge base well and can implement the communications between heterogeneous data source satisfactorily. The built AWDEES has high reusability, good robustness and high practical value.