Missing Value Estimation Methods Research for Arrhythmia Classification Using the Modified Kernel Difference-Weighted KNN Algorithms

Table 1

Class description of the UCI cardiac arrhythmia database.

Class	Class name	Number of instances
1	Normal	245
2	Ischemic changes (coronary artery disease)	44
3	Old anterior myocardial infarction	15
4	Old inferior myocardial infarction	15
5	Sinus tachycardia	13
6	Sinus bradycardia	25
7	Ventricular premature contraction (PVC)	3
8	Supraventricular premature contraction	2
9	Left bundle branch block	9
10	Right bundle branch block	50
11	1. degree atrioventricular block	0
12	2. degree AV block	0
13	3. degree AV block	0
14	Left ventricular hypertrophy	4
15	Atrial fibrillation or flutter	5
16	Others	22