I have graduation project and I am working in an expert system"System diagnosis for diseases"(I did not begin implementation stage yet ) in expert system I did not see any useful tutorial(code) that is helping me in build a rules
I was try openrules and I am not sure if it is good for expert system or not
my question is what is a good Inference engine (open source) in Java that I can build a rules and test correctly I see application it is name XperRule but it is not free if you have any information tell me because I relay need to find any way to build this system ,my supervisor will reject my work if I did not find a right way.
thank you for reading