(2001) compared case-based and model-based reasoning
and proposed to combine them for a lower cost solution
to machine condition assessment and diagnosis. Unlike
other reasoning methods, negative reasoning deals with
negative information, which by its absence or lack of
symptoms is indicative of meaningful inferences. Nie
and Liu (2007) established an expert system for Farm
Machinery Fault Diagnosis based on Neural Network.
Bardaie et al. (1988) discussed about the potential usage
of expert system in agriculture along with a presentation
of the case for the service and maintenance of agriculture
tractors.