Design & Analysis On Crops Remote Diagnostics System Web-based

In this paper, we presented the construction of Web-based integrating Crop theoretical and practical technology Remote Diagnosis of Plant Diseases Expert System. After analyzing foreign and domestic agriculture expert system, we put forward the scheme of the system, which used JavaBean and Servlet. It make the Remote Diagnosis of Plant Diseases Expert System can be accessible through Internet/Intranet, and has good backward compatibility, meanwhile, needs less effort to update. In this paper, we introduced the implementing method for this expert system, such as the whole structure of expert system,the classic.partition of knowledge point, the building of the knowledge base. Using the disease diagnosis as an examp1e,the building of rule base,the design of reasoning machine and the manifestation of network production were presented in detail.In the first half of the paper, we introduced the concept of expert system, the content of expert system, the expert system structure, the application of expert system and the domestic and foreign research general situation. And the purpose and significance of the issue is described. Then present the core issues -- the expert system inference engine and knowledge of the realization of the paper.In the second half of the paper, we expatiate on the popular Internet technologies, Software Component Technology conducted in detail. The technologies are used to design the framework model of the expert system exploitation platform. Expert System structure in the Web uses client / server software model. The "Wizard" diagnosis and keyword search algorithm research are given in the crops diagnosis.In the"Wizard"diagnosis, we made use of the precise mode to diagnosis of the crops disease. Using knowledge of the search tree, we speculate a series of symptoms of the disease specific to the ultimate reason. When we speculate, with the "Wizard" method, we use "breadth" of the disease priority search algorithm to complete reasoning.In the retrieve diagnosis of"keyword",Lucene is a power full-text retrieval tools. The custom-built search engine based on Lucene has better performance in searching in information. This paper investigates the implementation of word in Chinese full text retrieval system with keyword indexing.It sets up a kind of key word index file.With the indexing,the system can save mercury and improve the efficiency...