Deep learning and electrocardiography: systematic review of current techniques in cardiovascular disease diagnosis and management

Table 2 Ranking of key research keywords

Ranking	Keyword	Occurrences	Keyword	TLS
1	Deep learning	96	Deep learning	415
2	Electrocardiogram	58	Electrocardiogram	249
3	Classification	50	Classification	215
4	Artificial intelligence	37	Artificial intelligence	188
5	Electrocardiography	32	Electrocardiography	166
7	ECG	29	Diagnosis	139
6	Atrial fibrillation	29	ECG	135
8	Diagnosis	27	Atrial fibrillation	105
9	Convolutional neural network	24	Convolutional neural network	99
10	Machine learning	24	Electrocardiogram (ECG)	95

ISSN: 1475-925X