nPredefined set of possible faults
nPredefined set of possible symptoms
nPredefined relations among them
n
n
n
n
nDoes not generalize
nIs not robust
Rule-based Diagnostics
If gram stain of the organism is gram negative, and the morphology of the organism is rod, and the aerobicity of the organism is anaerobic, then there is evidence (.7) that the identify of the organism is Bacteriodes – Mycin.