Citation Rankings
Highly Cited Researchers
National Center for Scientific Research Demokritos Highly Cited Researchers CitationEngineering & Technology / Computer Science Rankings (Sort by last 6 years Citation Index) 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Artificial Intelligence
Machine Learning
Data Mining
Knowledge Discovery
Information Retrieval
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,084
4,206
0.379
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
Image Processing
Pattern Recognition
Document Image Analysis
OCR
Processing and recognition of Historical Documents
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,639
3,624
0.341
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
IR
NLP
Deep Learning for NLP
Zero-shot Learning
Large Document Collections
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,804
2,826
0.743
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
pattern recognition
multimedia signal analysis
audio analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,139
1,917
0.611
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
Artificial Intelligence
Event Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,422
1,781
0.403
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
Machine Learning
Information extraction
Artificial intelligence
Biomedical informatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,239
1,706
0.762
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
Natural language processing
knowledge representation
artificial intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,017
1,610
0.268
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
pattern recognition
computational intelligence
multimedia processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,877
1,434
0.209
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
5G/6G
AI-assisted communications
User-centric Networking
Edge-Cloud Continuum
QoE
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,076
1,252
0.603
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
Automatic Summarization
Natural Language Processing
Artificial Intelligence
Machine Learning
AI for Natural Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,676
1,028
0.613
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
Document Image Analysis
Handwritten Character Recognition
Machine Learning
Pattern Recognition
Historical Document Processin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,309
948
0.411
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
Document Image Processing
Document Image Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,325
886
0.381
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
Image Processing
Machine Learning
Document Image Analysis
Pattern Recognition
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,135
857
0.401
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
Artificial Intelligence
Machine Learning
Natural Language Processing
Information Retrieval
Grammatical Inference
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,758
686
0.390
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
Networking
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
919
675
0.734
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
Computational Materials Chemistry
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
692
550
0.795
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
Service Oriented Architectures
Artificial intelligence
Biomedical informatics
Social Networking
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
802
489
0.610
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
Machine Learning and Software Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
690
422
0.612
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
901
417
0.463
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
Data-Driven Engineering
Autonomous Science
Machine Learning
Manufacturing
Biomaterials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
459
394
0.858
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
data science
artificial intelligence
deep learning
big data
data-intensive computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
598
293
0.490
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
remote sensing
machine learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
530
280
0.528
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
Artificial Intelligence
Complex Event Processing
Machine Learning
Probabilistic Graphical Models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
599
265
0.442
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :24
Machine Learning
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
351
243
0.692
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :25
Machine Learning
Deep Learning
AI Safety
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
319
243
0.762
* Last 6 Years Citation Counts Rankings
Rankings
109,793
615
10
Ranking Based On Selection: 1
Georgios Paliouras
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,084
4,206
0.379
Artificial Intelligence
Machine Learning
Data Mining
Knowledge Discovery
Information Retrieval
* Last 6 Years Citation Counts Rankings
Rankings
131,118
761
15
Ranking Based On Selection: 2
Basilis G. Gatos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,639
3,624
0.341
Image Processing
Pattern Recognition
Document Image Analysis
OCR
Processing and recognition of Historical Documents
* Last 6 Years Citation Counts Rankings
Rankings
174,310
1,086
21
Ranking Based On Selection: 3
Prodromos Malakasiotis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,804
2,826
0.743
IR
NLP
Deep Learning for NLP
Zero-shot Learning
Large Document Collections
* Last 6 Years Citation Counts Rankings
Rankings
261,601
1,772
37
Ranking Based On Selection: 4
Theodoros Giannakopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,139
1,917
0.611
pattern recognition
multimedia signal analysis
audio analysis
* Last 6 Years Citation Counts Rankings
Rankings
280,975
1,930
44
Ranking Based On Selection: 5
Alexander Artikis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,422
1,781
0.403
Artificial Intelligence
Event Processing
* Last 6 Years Citation Counts Rankings
Rankings
292,660
2,017
48
Ranking Based On Selection: 6
Anastasia Krithara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,239
1,706
0.762
Machine Learning
Information extraction
Artificial intelligence
Biomedical informatics
* Last 6 Years Citation Counts Rankings
Rankings
308,739
2,139
53
Ranking Based On Selection: 7
Vangelis Karkaletsis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,017
1,610
0.268
Natural language processing
knowledge representation
artificial intelligence
* Last 6 Years Citation Counts Rankings
Rankings
342,624
2,423
59
Ranking Based On Selection: 8
Stavros Perantonis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,877
1,434
0.209
pattern recognition
computational intelligence
multimedia processing
* Last 6 Years Citation Counts Rankings
Rankings
385,228
2,771
66
Ranking Based On Selection: 9
Harilaos Koumaras
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,076
1,252
0.603
5G/6G
AI-assisted communications
User-centric Networking
Edge-Cloud Continuum
QoE
* Last 6 Years Citation Counts Rankings
Rankings
450,666
3,320
83
Ranking Based On Selection: 10
George Giannakopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,676
1,028
0.613
Automatic Summarization
Natural Language Processing
Artificial Intelligence
Machine Learning
AI for Natural Sciences
* Last 6 Years Citation Counts Rankings
Rankings
478,580
3,538
92
Ranking Based On Selection: 11
Georgios Louloudis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,309
948
0.411
Document Image Analysis
Handwritten Character Recognition
Machine Learning
Pattern Recognition
Historical Document Processin
* Last 6 Years Citation Counts Rankings
Rankings
502,400
3,733
97
Ranking Based On Selection: 12
Konstantinos Ntirogiannis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,325
886
0.381
Document Image Processing
Document Image Analysis
* Last 6 Years Citation Counts Rankings
Rankings
514,247
3,828
102
Ranking Based On Selection: 13
Nikolaos Stamatopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,135
857
0.401
Image Processing
Machine Learning
Document Image Analysis
Pattern Recognition
Artificial Intelligence
* Last 6 Years Citation Counts Rankings
Rankings
594,299
4,468
116
Ranking Based On Selection: 14
Georgios Petasis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,758
686
0.390
Artificial Intelligence
Machine Learning
Natural Language Processing
Information Retrieval
Grammatical Inference
* Last 6 Years Citation Counts Rankings
Rankings
600,485
4,526
118
Ranking Based On Selection: 15
Emmanouil Kafetzakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
919
675
0.734
* Last 6 Years Citation Counts Rankings
Rankings
675,150
5,121
135
Ranking Based On Selection: 16
Panagiotis Krokidas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
692
550
0.795
Computational Materials Chemistry
Artificial Intelligence
* Last 6 Years Citation Counts Rankings
Rankings
718,166
5,431
145
Ranking Based On Selection: 17
Fotis Aisopos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
802
489
0.610
Service Oriented Architectures
Artificial intelligence
Biomedical informatics
Social Networking
* Last 6 Years Citation Counts Rankings
Rankings
776,084
5,826
159
Ranking Based On Selection: 18
Aris Kosmopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
690
422
0.612
Machine Learning and Software Development
* Last 6 Years Citation Counts Rankings
Rankings
780,786
5,856
160
Ranking Based On Selection: 19
Stasinos Konstantopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
901
417
0.463
* Last 6 Years Citation Counts Rankings
Rankings
804,774
6,017
163
Ranking Based On Selection: 20
Filippos Tourlomousis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
459
394
0.858
Data-Driven Engineering
Autonomous Science
Machine Learning
Manufacturing
Biomaterials
* Last 6 Years Citation Counts Rankings
Rankings
931,552
6,754
173
Ranking Based On Selection: 21
Iraklis A. Klampanos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
598
293
0.490
data science
artificial intelligence
deep learning
big data
data-intensive computing
* Last 6 Years Citation Counts Rankings
Rankings
951,663
6,865
177
Ranking Based On Selection: 22
Eleni Charou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
530
280
0.528
remote sensing
machine learning
* Last 6 Years Citation Counts Rankings
Rankings
976,239
6,987
183
Ranking Based On Selection: 23
Anastasios Skarlatidis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
599
265
0.442
Artificial Intelligence
Complex Event Processing
Machine Learning
Probabilistic Graphical Models
* Last 6 Years Citation Counts Rankings
Rankings
1,015,573
7,217
192
Ranking Based On Selection: 24
Nikos Katzouris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
351
243
0.692
Machine Learning
Artificial Intelligence
* Last 6 Years Citation Counts Rankings
Rankings
1,015,741
7,218
193
Ranking Based On Selection: 25
Nikiforos Pittaras
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
319
243
0.762
Machine Learning
Deep Learning
AI Safety