Citation Rankings
Highly Cited Researchers
Engineering & Technology / Computer Science Highly Cited Researchers 39 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Control Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,175
6,328
0.446
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Artificial Intelligence
Computer Vision
Cybersecurity
Energy
Remote Sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,520
5,198
0.546
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Global Optimization
Operations Research
Optimal Control Theorey
MINLP
Optimization in Big-Data
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,960
1,728
0.290
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Information Systems
Electronic Commerce
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,151
2,198
0.698
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Coal-Combustion
Spontaneous Combustion
Coal-Research
Energy
Mine planning software utilisation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,527
1,364
0.893
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Multilinear algebra
computer algebra
quantum computation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
872
198
0.227
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Swarm Intelligence
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
829
553
0.667
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
725
172
0.237
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Software Engineering
Smart Grids
distribution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
720
177
0.246
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Explainable AI
Probabilistic Graphical Models
Structured Decision Problems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
633
601
0.949
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Markov Chain Monte Carlo
Applied Machine Learning
Bayesian Statistics
Actuarial Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
594
575
0.968
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Theoretical computer science
Natural language processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
376
63
0.168
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Remote Sensing
GIS
Environmental Management
Urban Ecology
Image Processing
Statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
138
135
0.978
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
134
105
0.784
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Statistical models
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
133
131
0.985
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Reinforcement Learning
Deep Learning
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
128
128
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Strategy
Leadership
Data Science and Information Engineering
Research
AI
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
125
83
0.664
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Software Engineering
Software Development
Object-Oriented Modelling
Testing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
119
41
0.345
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Medicine
Machine Learning
Deep Learning
Data Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96
96
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 20
deep learning
anomaly detection
uncertainty quantification
probabilistic modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75
74
0.987
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Biomedical Image Processing
Computer Vision
Deep Learning
Reinforcement Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73
69
0.945
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Carbon Capture and Storage
Climate Change
Machine Learning and Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68
42
0.618
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Computer Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68
42
0.618
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Machine learning
AI
Game design
Information Systems and Technology
Computer Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62
30
0.484
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Machine learning
causal inference
online education.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60
55
0.917
* Total Citation Counts Rankings
Rankings
65,866
226
32
Ranking Based On Selection: 1
Bao-Zhu Guo
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,175
6,328
0.446
* Total Citation Counts Rankings
Rankings
106,354
381
51
Ranking Based On Selection: 2
Turgay Celik
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,520
5,198
0.546
Artificial Intelligence
Computer Vision
Cybersecurity
Energy
Remote Sensing
* Total Citation Counts Rankings
Rankings
175,865
713
90
Ranking Based On Selection: 3
Montaz Ali
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,960
1,728
0.290
Global Optimization
Operations Research
Optimal Control Theorey
MINLP
Optimization in Big-Data
* Total Citation Counts Rankings
Rankings
315,455
1,405
163
Ranking Based On Selection: 4
Jason Cohen
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,151
2,198
0.698
Information Systems
Electronic Commerce
* Total Citation Counts Rankings
Rankings
537,210
2,622
279
Ranking Based On Selection: 5
Bekir Genc
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,527
1,364
0.893
Coal-Combustion
Spontaneous Combustion
Coal-Research
Energy
Mine planning software utilisation
* Total Citation Counts Rankings
Rankings
736,043
3,787
382
Ranking Based On Selection: 6
Yorick Hardy
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
872
198
0.227
Multilinear algebra
computer algebra
quantum computation
* Total Citation Counts Rankings
Rankings
753,662
3,903
394
Ranking Based On Selection: 7
Christopher W Cleghorn
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
829
553
0.667
Swarm Intelligence
Machine Learning
* Total Citation Counts Rankings
Rankings
800,376
4,199
424
Ranking Based On Selection: 8
Clint Van Alten
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
725
172
0.237
* Total Citation Counts Rankings
Rankings
802,762
4,215
426
Ranking Based On Selection: 9
Barry Dwolatzky
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
720
177
0.246
Software Engineering
Smart Grids
distribution
* Total Citation Counts Rankings
Rankings
845,612
4,491
442
Ranking Based On Selection: 10
Ritesh Ajoodha
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
633
601
0.949
Explainable AI
Probabilistic Graphical Models
Structured Decision Problems
* Total Citation Counts Rankings
Rankings
866,553
4,623
448
Ranking Based On Selection: 11
Rendani Mbuvha
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
594
575
0.968
Markov Chain Monte Carlo
Applied Machine Learning
Bayesian Statistics
Actuarial Science
* Total Citation Counts Rankings
Rankings
1,045,941
6,021
594
Ranking Based On Selection: 12
Sigrid Ewert
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
376
63
0.168
Theoretical computer science
Natural language processing
* Total Citation Counts Rankings
Rankings
1,469,190
9,784
950
Ranking Based On Selection: 13
Simbarashe Jombo
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
138
135
0.978
Remote Sensing
GIS
Environmental Management
Urban Ecology
Image Processing
Statistics
* Total Citation Counts Rankings
Rankings
1,482,736
9,927
959
Ranking Based On Selection: 14
Adam Earle
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
134
105
0.784
* Total Citation Counts Rankings
Rankings
1,484,732
9,941
962
Ranking Based On Selection: 15
Charles Chimedza
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
133
131
0.985
Statistical models
Machine Learning
* Total Citation Counts Rankings
Rankings
1,500,334
10,080
978
Ranking Based On Selection: 16
Geraud Nangue Tasse
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
128
128
1.000
Reinforcement Learning
Deep Learning
Machine Learning
* Total Citation Counts Rankings
Rankings
1,512,028
10,201
988
Ranking Based On Selection: 17
Gideon Nimako
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
125
83
0.664
Strategy
Leadership
Data Science and Information Engineering
Research
AI
* Total Citation Counts Rankings
Rankings
1,533,100
10,374
1,009
Ranking Based On Selection: 18
Stephen Phillip Levitt
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
119
41
0.345
Software Engineering
Software Development
Object-Oriented Modelling
Testing
* Total Citation Counts Rankings
Rankings
1,616,087
11,106
1,074
Ranking Based On Selection: 19
Bradley Max Segal
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96
96
1.000
Medicine
Machine Learning
Deep Learning
Data Science
* Total Citation Counts Rankings
Rankings
1,708,654
11,909
1,154
Ranking Based On Selection: 20
Thabang Michael Mathonsi
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75
74
0.987
deep learning
anomaly detection
uncertainty quantification
probabilistic modeling
* Total Citation Counts Rankings
Rankings
1,719,066
11,996
1,163
Ranking Based On Selection: 21
Jonathan Gerrand
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73
69
0.945
Biomedical Image Processing
Computer Vision
Deep Learning
Reinforcement Learning
* Total Citation Counts Rankings
Rankings
1,745,565
12,238
1,190
Ranking Based On Selection: 22
Tafara Leonard Chitsiga
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68
42
0.618
Carbon Capture and Storage
Climate Change
Machine Learning and Artificial Intelligence
* Total Citation Counts Rankings
Rankings
1,745,565
12,238
1,190
Ranking Based On Selection: 23
Hairong Wang
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68
42
0.618
* Total Citation Counts Rankings
Rankings
1,777,401
12,578
1,218
Ranking Based On Selection: 24
Oluwarotimi Randle|oluwarotimi Abayomi Randle
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62
30
0.484
Machine learning
AI
Game design
Information Systems and Technology
Computer Science
* Total Citation Counts Rankings
Rankings
1,785,970
12,655
1,224
Ranking Based On Selection: 25
Bevan Smith
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60
55
0.917
Machine learning
causal inference
online education.