枣病虫害诊断咨询专家系统

在总结枣树病虫害知识和专家经验的基础上，研制了基于网络的枣病虫害诊断咨询专家系统。本系统采用C/S(用户／中间件／服务器)三层结构设计，按照面向对象的知识表示方法，以病虫危害部位进行对象分类和知识整理抽取，并根据数据知识是否用于推理过程，分别建立知识库和程序信息库，通过采用人工补充的系统学习机制和正反向混合推理策略保证系统诊断的准确性和实用性，实现了枣病虫害的网络诊断和查询功能。

Study on expert system for the diagnosis and consultation of diseases and insect pests of Chinese jujube

Based on the valid data of Chinese jujube (Ziziphu s jujuba Mill.) and experts' experience, an expert system for diagnosis a nd consultation of Chinese jujube disease and insect pest was built up which can be approached by Internet . A C/S (user/scratchpad/server) design and object-oriented information represen tation method were employed in this system. The information needed was selected and arranged according to the catalogue of the disserve organ. The access databa se and program database were set up individually in the light of the different f unction of the data. The veracity of the result and the system practicability we re guaranteed by a learning mechanism of manual appending and a positive and neg ative commix inference model. And the diagnosis & consultation of Chinese jujube diseases and insect pests were achieved via Internet.