Table 13.

Occurrence of top 20 most author’s keywords and Keyword plus

Machine learning
Author's Keywords			Keyword plus
Keyword	Occurrences	Total Link Strength	Keyword	Occurrences	Total Link Strength
Machine Learning	650	614	Classification	133	293
Artificial Intelligence	99	157	Prediction	82	181
Healthcare	81	150	Risk	58	112
Deep Learning	63	115	Diagnosis	57	122
Big Data	38	63	Model	54	126
Classification	38	61	Validation	50	126
Covid-19	34	65	Mortality	46	105
Internet Of Things	34	79	Models	42	75
Natural Language Processing	34	54	System	42	96
Prediction	33	49	Big Data	40	97
Electronic Health Records	24	30	Outcomes	38	109
Feature Selection	20	34	Internet	32	63
Random Forest	20	27	Management	32	67
Data Mining	19	31	Care	31	74
Feature Extraction	17	38	Disease	28	51
Medical Services	14	51	Healthcare	27	73
Predictive Models	14	39	Impact	27	58
Support Vector Machine	14	21	Regression	26	57
Electronic Health Record	13	26	Artificial-Intelligence	25	64
Predictive Analytics	13	18	Cancer	25	76
Deep learning
Deep Learning	944	762	Neural-Networks	138	176
Machine Learning	103	198	Classification	123	271
Artificial Intelligence	65	123	Model	78	177
Neural Networks	48	89	Algorithm	59	123
Convolutional Neural Network	43	64	Prediction	54	120
Convolutional Neural Networks	40	74	Segmentation	50	150
Classification	34	67	Convolutional Neural-Networks	43	102
Neural Network	33	63	Networks	43	31
Feature Extraction	29	62	Neural-Network	42	62
Training	29	75	Recognition	38	92
CNN	28	47	Images	37	95
Segmentation	27	53	Convolutional Neural-Network	33	81
LSTM	21	41	Framework	32	73
Computer Vision	20	37	Network	31	42
Big Data	19	45	Diagnosis	27	68
Survey	17	36	Features	27	71
Bioinformatics	16	33	System	27	46
Medical Imaging	15	32	Models	26	28
Image Recognition	14	22	Cancer	24	55
Object Detection	14	26	Reconstruction	24	45
Sentiment Analysis	14	32	Performance	20	49