Diagnosis system for pests on fruit trees based on multiple levels imprecise reasoning arithmetic

A diagnosis system for pests on fruit trees based on multiple levels imprecise reasoning arithmetic is developed using Visual C++. Object-oriented knowledge expression method is used, which makes it easy to dig and express knowledge and make it efficiently to reason. The mixture of forward and backward reasoning mechanism is used in the system. The rule of depth preference is adopted when searching objects. Multiple media technology such as sound, picture, and video is used in the system, which makes the system easy to use.