Citation Rankings
Highly Cited Researchers
Engineering & Technology / Computer Science Highly Cited Researchers 40 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
machine learning
optimization
signal and image processing
information theory
causality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,468
9,028
0.255
* Total Citation Counts Rankings
Ranking Based On Selection: 2
computer science
fuzzy logic
artificial intelligence
decision support systems
decision making
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,700
12,876
0.622
* Total Citation Counts Rankings
Ranking Based On Selection: 3
recommender systems
machine learning
artificial intelligence
biomedicine
astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,324
15,554
0.765
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Artificial Intelligence
Human-Robot Interaction
Virtual Agents
Multiagent Systems
Affective Computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,255
7,781
0.426
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,519
1,016
0.107
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Data Science
Spatial Data Science
GeoAI
Information Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,079
6,502
0.716
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Software Engineering
Requirements Engineering
Software Architecture
Software Sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,536
995
0.132
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Text Mining
Knowledge Management
Biomedical Informatics
Bioinformatics
Information Extraction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,705
2,496
0.372
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Requirements engineering
Software Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,161
1,147
0.186
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Machine Learning
Data Mining
Biomedical Informatics
Bioinformatics
Biclustering & Triclustering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,915
1,745
0.295
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Machine Learning
Data Mining
Bioinformatics
Cheminformatics
Combinatorial Optimization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,010
1,618
0.403
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Agents
Multi-Agent Systems
Knowledge Engineering
Artificial Intelligence
Social Simulation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,657
616
0.168
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Artificial Intelligence
Simulations
Interactive Storytelling
Serious Games
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,404
1,452
0.604
* Total Citation Counts Rankings
Ranking Based On Selection: 14
AI
Natural Language Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,172
914
0.421
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Software Engineering
Testing and Debugging
Test Generation
Quantum Software Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,983
1,307
0.659
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Image processing
mathematical morphology
SAR image processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,304
1,165
0.893
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Artificial Life
Evolutionary Computation
Machine Learning
Evolutionary Robotics
Multiagent
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,287
593
0.461
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Decision Support
Cybersecurity Risk Management
Reliability
Multi-objective Optimization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,053
549
0.521
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Natural Language Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
496
0.489
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Vulnerability detection
Static analysis
Code repair
Software testing
Machine learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
977
750
0.768
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Computer graphics
Virtual and Augmented Reality
Visualization
Serious Games
Digital Heritage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
693
399
0.576
* Total Citation Counts Rankings
Ranking Based On Selection: 22
artificial intelligence
multi-agents
multi-agent based simulation
natural language processing
intelligent virtual agents
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
613
277
0.452
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Artificial Intelligence
Computer Science
Security
Knowledge Discovery
Complex Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
599
328
0.548
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Artificial Intelligence
Artificial Life
Machine Learning
Sociology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
594
229
0.386
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Machine Learning
Natural Language Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
524
392
0.748
* Total Citation Counts Rankings
Rankings
17,787
39
12
Ranking Based On Selection: 1
Mario At Figueiredo
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,468
9,028
0.255
machine learning
optimization
signal and image processing
information theory
causality
* Total Citation Counts Rankings
Rankings
39,683
87
11
Ranking Based On Selection: 2
Rita A. Ribeiro
Universidade Nova de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,700
12,876
0.622
computer science
fuzzy logic
artificial intelligence
decision support systems
decision making
* Total Citation Counts Rankings
Rankings
40,667
90
29
Ranking Based On Selection: 3
Márcia Barros
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,324
15,554
0.765
recommender systems
machine learning
artificial intelligence
biomedicine
astronomy
* Total Citation Counts Rankings
Rankings
47,135
109
36
Ranking Based On Selection: 4
Ana Paiva
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,255
7,781
0.426
Artificial Intelligence
Human-Robot Interaction
Virtual Agents
Multiagent Systems
Affective Computing
* Total Citation Counts Rankings
Rankings
106,598
290
47
Ranking Based On Selection: 5
Luís Moniz Pereira
Universidade Nova de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,519
1,016
0.107
* Total Citation Counts Rankings
Rankings
112,465
310
52
Ranking Based On Selection: 6
Fernando Bacao
Universidade Nova de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,079
6,502
0.716
Data Science
Spatial Data Science
GeoAI
Information Systems
* Total Citation Counts Rankings
Rankings
138,295
404
67
Ranking Based On Selection: 7
Ana Moreira
Universidade Nova de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,536
995
0.132
Software Engineering
Requirements Engineering
Software Architecture
Software Sustainability
* Total Citation Counts Rankings
Rankings
156,379
454
90
Ranking Based On Selection: 8
Francisco M Couto
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,705
2,496
0.372
Text Mining
Knowledge Management
Biomedical Informatics
Bioinformatics
Information Extraction
* Total Citation Counts Rankings
Rankings
170,445
494
75
Ranking Based On Selection: 9
Joao Araujo
Universidade Nova de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,161
1,147
0.186
Requirements engineering
Software Engineering
* Total Citation Counts Rankings
Rankings
177,577
524
113
Ranking Based On Selection: 10
Sara C. Madeira
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,915
1,745
0.295
Machine Learning
Data Mining
Biomedical Informatics
Bioinformatics
Biclustering & Triclustering
* Total Citation Counts Rankings
Rankings
257,132
806
177
Ranking Based On Selection: 11
Andre O Falcao
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,010
1,618
0.403
Machine Learning
Data Mining
Bioinformatics
Cheminformatics
Combinatorial Optimization
* Total Citation Counts Rankings
Rankings
278,678
884
194
Ranking Based On Selection: 12
Helder Coelho
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,657
616
0.168
Agents
Multi-Agent Systems
Knowledge Engineering
Artificial Intelligence
Social Simulation
* Total Citation Counts Rankings
Rankings
392,217
1,359
303
Ranking Based On Selection: 13
Claudia Ribeiro
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,404
1,452
0.604
Artificial Intelligence
Simulations
Interactive Storytelling
Serious Games
* Total Citation Counts Rankings
Rankings
422,829
1,471
322
Ranking Based On Selection: 14
António Branco
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,172
914
0.421
AI
Natural Language Processing
* Total Citation Counts Rankings
Rankings
451,517
1,579
341
Ranking Based On Selection: 15
José Campos
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,983
1,307
0.659
Software Engineering
Testing and Debugging
Test Generation
Quantum Software Engineering
* Total Citation Counts Rankings
Rankings
592,973
2,203
461
Ranking Based On Selection: 16
Fernando Soares
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,304
1,165
0.893
Image processing
mathematical morphology
SAR image processing
* Total Citation Counts Rankings
Rankings
597,761
2,215
463
Ranking Based On Selection: 17
Jorge Gomes
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,287
593
0.461
Artificial Life
Evolutionary Computation
Machine Learning
Evolutionary Robotics
Multiagent
* Total Citation Counts Rankings
Rankings
669,619
2,520
533
Ranking Based On Selection: 18
Ana Respicio
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,053
549
0.521
Decision Support
Cybersecurity Risk Management
Reliability
Multi-objective Optimization
* Total Citation Counts Rankings
Rankings
682,934
2,599
551
Ranking Based On Selection: 19
João Silva
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
496
0.489
Natural Language Processing
* Total Citation Counts Rankings
Rankings
696,442
2,668
564
Ranking Based On Selection: 20
Ibéria Medeiros
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
977
750
0.768
Vulnerability detection
Static analysis
Code repair
Software testing
Machine learning
* Total Citation Counts Rankings
Rankings
817,417
3,222
668
Ranking Based On Selection: 21
Ana Paula Cláudio
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
693
399
0.576
Computer graphics
Virtual and Augmented Reality
Visualization
Serious Games
Digital Heritage
* Total Citation Counts Rankings
Rankings
858,324
3,462
692
Ranking Based On Selection: 22
João Balsa
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
613
277
0.452
artificial intelligence
multi-agents
multi-agent based simulation
natural language processing
intelligent virtual agents
* Total Citation Counts Rankings
Rankings
865,931
3,508
101
Ranking Based On Selection: 23
João Paulo Pimentão
Universidade Nova de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
599
328
0.548
Artificial Intelligence
Computer Science
Security
Knowledge Discovery
Complex Systems
* Total Citation Counts Rankings
Rankings
868,916
3,534
703
Ranking Based On Selection: 24
Pedro Mariano
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
594
229
0.386
Artificial Intelligence
Artificial Life
Machine Learning
Sociology
* Total Citation Counts Rankings
Rankings
912,239
3,872
752
Ranking Based On Selection: 25
Tsvetomila Mihaylova
Universidade de Lisboa
Lisboa, Portugal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
524
392
0.748
Machine Learning
Natural Language Processing