INS and diabetes mellitus: In the Pima Indians Diabetes Data Set, we use at most eight attributes: (1) number of times pregnant, (2) plasma glucose concentration; a 2 hours in an oral glucose tolerance test, (3) diastolic blood pressure (mm Hg), (4) triceps skin fold thickness (mm), (5) 2-hours serum insulin (mm U/ml), (6) body mass index (weight in kg/height in m2), (7) diabetes pedigree function, and (8) age (years).