Citation Rankings
Highly Cited Researchers
Natural Sciences / Mathematical Sciences Highly Cited Researchers 355 Scientists Citation in Greece 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
Data Mining
Artificial Intelligence
Knowledge Discovery
Data Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,333
15,973
0.584
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Global Analysis
Calculus of Variations
Approximation Theory
Functional Equations and Applications
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,519
4,375
0.203
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Numerical Mathematics
Natural Computing
Global Optimization
Reliable Computing
Artificial Neural
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,453
4,241
0.207
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Differential Equations
Controllability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,005
7,865
0.437
* Total Citation Counts Rankings
Ranking Based On Selection: 5
biostatistics
meta-analysis
network meta-analysis
structural equation modeling
item response theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,210
9,554
0.628
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,099
3,352
0.332
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Empirical Software Engineering
Statistics
Information Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,196
3,116
0.380
* Total Citation Counts Rankings
Ranking Based On Selection: 8
graph theory
graph algorithms
parameterized complexity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,914
2,364
0.299
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Statistics
copulas
discrete valued time series
sport statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,358
3,096
0.421
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Mixed Type Partial Differential Equations
Functional Equations and Mathematical InequalitiesFirst interest
Second interest
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,235
1,457
0.201
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Control Theory
Systems Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,688
3,258
0.487
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Multi-scale Modeling
Simulations
Physics-based Data-driven Methods
Soft Matter
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,302
2,271
0.360
* Total Citation Counts Rankings
Ranking Based On Selection: 13
computational transport phenomena
interfacial phenomena
nonlinear analysis
multiscale analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,092
2,117
0.348
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Model and Variable Selection
Bayesian computation
Bayesian Modelling
Sports modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,034
1,980
0.328
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Parallel and Distributed Computing
Cloud Computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,652
2,470
0.437
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Fluid Mechanics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,209
896
0.172
* Total Citation Counts Rankings
Ranking Based On Selection: 17
statistics
probability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,532
1,175
0.259
* Total Citation Counts Rankings
Ranking Based On Selection: 18
complex systems
networks
statistical mechanics
dynamical systems
chaos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,493
878
0.195
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Parallel and Distributed Computing
Intelligent Systems
Computer Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,283
1,087
0.254
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Analysis
pde
dynamics
geometric analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,265
881
0.207
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Delay Differential Equations
Functional Equations
Difference Equations
Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,785
828
0.219
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Mathematics
Theoretical Computer Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,738
478
0.128
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Applied Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,689
733
0.199
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Statistics
Design of Experiments
Statistical Quality Control
Biostatistics
Combinatorial Designs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,610
1,363
0.378
* Total Citation Counts Rankings
Ranking Based On Selection: 25
optimization
neural networks
semi-supervised learning
deep learning
time-series
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,456
3,045
0.881
* Total Citation Counts Rankings
Rankings
26,507
111
4
Ranking Based On Selection: 1
Sotiris Kotsiantis
University of Patras
Patras, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,333
15,973
0.584
Machine Learning
Data Mining
Artificial Intelligence
Knowledge Discovery
Data Science
* Total Citation Counts Rankings
Rankings
37,540
164
11
Ranking Based On Selection: 2
Themistocles M Rassias
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,519
4,375
0.203
Global Analysis
Calculus of Variations
Approximation Theory
Functional Equations and Applications
* Total Citation Counts Rankings
Rankings
40,361
180
12
Ranking Based On Selection: 3
Michael N Vrahatis
University of Patras
Patras, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,453
4,241
0.207
Numerical Mathematics
Natural Computing
Global Optimization
Reliable Computing
Artificial Neural
* Total Citation Counts Rankings
Rankings
48,037
216
11
Ranking Based On Selection: 4
Sotiris Ntouyas
University of Ioannina
Ioannina, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,005
7,865
0.437
Differential Equations
Controllability
* Total Citation Counts Rankings
Rankings
60,191
282
18
Ranking Based On Selection: 5
Dimitris Mavridis
University of Ioannina
Ioannina, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,210
9,554
0.628
biostatistics
meta-analysis
network meta-analysis
structural equation modeling
item response theory
* Total Citation Counts Rankings
Rankings
99,642
550
37
Ranking Based On Selection: 6
Nikolaos K Efremidis
University of Crete
Rethymno, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,099
3,352
0.332
* Total Citation Counts Rankings
Rankings
126,099
743
99
Ranking Based On Selection: 7
Lefteris Eleftherios Angelis
Aristotle University of Thessaloniki
Thessaloniki, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,196
3,116
0.380
Empirical Software Engineering
Statistics
Information Systems
* Total Citation Counts Rankings
Rankings
131,090
791
247
Ranking Based On Selection: 8
Dimitrios M Thilikos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,914
2,364
0.299
graph theory
graph algorithms
parameterized complexity
* Total Citation Counts Rankings
Rankings
141,893
892
11
Ranking Based On Selection: 9
Dimitris Karlis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,358
3,096
0.421
Statistics
copulas
discrete valued time series
sport statistics
* Total Citation Counts Rankings
Rankings
144,413
910
290
Ranking Based On Selection: 10
Jm Rassias
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,235
1,457
0.201
Mixed Type Partial Differential Equations
Functional Equations and Mathematical InequalitiesFirst interest
Second interest
* Total Citation Counts Rankings
Rankings
156,777
1,033
78
Ranking Based On Selection: 11
Iasson Karafyllis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,688
3,258
0.487
Control Theory
Systems Theory
* Total Citation Counts Rankings
Rankings
166,690
1,135
75
Ranking Based On Selection: 12
Vagelis Harmandaris
University of Crete
Rethymno, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,302
2,271
0.360
Multi-scale Modeling
Simulations
Physics-based Data-driven Methods
Soft Matter
* Total Citation Counts Rankings
Rankings
172,389
1,188
87
Ranking Based On Selection: 13
Andreas G Boudouvis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,092
2,117
0.348
computational transport phenomena
interfacial phenomena
nonlinear analysis
multiscale analysis
* Total Citation Counts Rankings
Rankings
174,079
1,202
18
Ranking Based On Selection: 14
Ioannis Ntzoufras
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,034
1,980
0.328
Model and Variable Selection
Bayesian computation
Bayesian Modelling
Sports modelling
* Total Citation Counts Rankings
Rankings
185,794
1,296
103
Ranking Based On Selection: 15
Anthony Theodore Chronopoulos
University of Patras
Patras, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,652
2,470
0.437
Parallel and Distributed Computing
Cloud Computing
* Total Citation Counts Rankings
Rankings
201,143
1,431
81
Ranking Based On Selection: 16
Andreas Raptis
University of Ioannina
Ioannina, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,209
896
0.172
* Total Citation Counts Rankings
Rankings
229,730
1,685
22
Ranking Based On Selection: 17
Markos Koutras
University of Piraeus
Piraeus, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,532
1,175
0.259
* Total Citation Counts Rankings
Rankings
231,615
1,710
213
Ranking Based On Selection: 18
Ioannis E Antoniou
Aristotle University of Thessaloniki
Thessaloniki, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,493
878
0.195
complex systems
networks
statistical mechanics
dynamical systems
chaos
* Total Citation Counts Rankings
Rankings
242,057
1,822
10
Ranking Based On Selection: 19
Konstantinos G Margaritis
University of Macedonia
Thessaloniki, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,283
1,087
0.254
Parallel and Distributed Computing
Intelligent Systems
Computer Mathematics
* Total Citation Counts Rankings
Rankings
242,957
1,832
481
Ranking Based On Selection: 20
Nicholas Alikakos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,265
881
0.207
Analysis
pde
dynamics
geometric analysis
* Total Citation Counts Rankings
Rankings
270,422
2,085
112
Ranking Based On Selection: 21
Ioannis P Stavroulakis
University of Ioannina
Ioannina, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,785
828
0.219
Delay Differential Equations
Functional Equations
Difference Equations
Mathematics
* Total Citation Counts Rankings
Rankings
273,370
2,108
535
Ranking Based On Selection: 22
Lefteris Kirousis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,738
478
0.128
Mathematics
Theoretical Computer Science
* Total Citation Counts Rankings
Rankings
276,493
2,135
177
Ranking Based On Selection: 23
George Dassios
University of Patras
Patras, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,689
733
0.199
* Total Citation Counts Rankings
Rankings
281,785
2,199
152
Ranking Based On Selection: 24
Christos Koukouvinos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,610
1,363
0.378
Statistics
Design of Experiments
Statistical Quality Control
Biostatistics
Combinatorial Designs
* Total Citation Counts Rankings
Rankings
292,487
2,287
192
Ranking Based On Selection: 25
Ioannis E Livieris
University of Patras
Patras, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,456
3,045
0.881
optimization
neural networks
semi-supervised learning
deep learning
time-series