Research Article

A Hybrid Classification System for Heart Disease Diagnosis Based on the RFRS Method

Table 1

Feature information of Statlog (Heart) dataset.

FeatureCodeDescriptionDomainData typeMeanStandard deviation

SexMale, female0, 1Binary
Chest pain typeAngina, asymptomatic, abnormal1, 2, 3, 4Nominal
Resting blood pressure94–200Real131.34417.862
Serum cholesterol in mg/dl126–564Real249.65951.686
Fasting blood sugar > 120 mg/dl0, 1Binary
Resting electrocardiographic resultsNorm, abnormal, hyper0, 1, 2Nominal
Maximum heart rate achieved71–202Real149.67823.1666
Exercise-induced angina0, 1Binary
Old peak = ST depression induced by exercise relative to rest0–6.2Real1.051.145
Slope of the peak exercise ST segmentUp, flat, down1, 2, 3Ordered
Number of major vessels (0–3) colored by fluoroscopy0, 1, 2, 3Real
ThalNormal, fixed defect, reversible defect3, 6, 7Nominal