Heart-Disease

 This database contains 76 attributes, but all published experiments
 refer to using a subset of 14 of them.  In particular, the Cleveland
 database is the only one that has been used by ML researchers to 
 this date.  The "goal" field refers to the presence of heart disease
 in the patient.  It is integer valued from 0 (no presence) to 4.
 Experiments with the Cleveland database have concentrated on simply
 attempting to distinguish presence (values 1,2,3,4) from absence (value
 0).