Table 4.

Description of the dataset features.

Feature	Type	Description
Age	numeric	Years of age
Sex	categorical	1: male, 0: female
CP	numeric	Type of chest pain 1: typical angina 2: atypical angina 3: non-anginal pain 4: no symptoms
Trestbps	numeric	Standing blood pressure of the patient (in mm Hg)
Chol	numeric	Serum cholesterol (in mg/dl)
Fbs	categorical	If fasting blood sugar >120 mg/dL (1 = true; 0 = false)
Restecg	numeric	0: means “normal”. 1: averaging an aberrant ST-T wave (T wave inversions and/or ST elevation or depression of >0.05 mV) 2: demonstrating probable or definite left ventricular hypertrophy according to Estes’ criteria
Thalach	numeric	Attained maximum heart rate.
Exang	categorical	Angina induced by exercise (1 = yes; 0 = no)
Oldpeak	numeric	Exercise-induced ST depression in comparison to resting
Slope	numeric	The peak exercise’s slope ST-segment V 1: up-sloping 2: flat 3: down-sloping
Ca	numeric	Number of significant vessels (0–3) colored by fluoroscopy
Thal	numeric	3 = normal; 6 = fixed defect; 7 = reversable defect
Num (target variable)	categorical	Heart disease diagnosis (angiographic disease status) 0: less than 50% diameter narrowing 1: more than 50% diameter narrowing