Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 297 Scientists Citation Rankings (Sort by last 6 years Citation Index) - 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.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Mental Health Informatics
Digital Health
Global Health Informatics
Public Health Informatics
Responsible AI for Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,939
62,313
0.931
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Water Treatment
Waste to Value-added Products
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96,599
35,979
0.372
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Data Quality
Data Cleaning
Data Integration
Database Systems
Data Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,264
20,180
0.799
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Computational Linguistics
Large Language Models
Fact-checking
Fake News
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,353
17,982
0.682
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
cloud computing
distributed systems
machine learning
data analytics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,870
17,897
0.948
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Alzheimer's disease
Parkinson's disease
Neuroscience
Neurodegenerative diseases
protein misfolding
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,948
11,040
0.481
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Sustainability
Energy
Additive Manufacturing
Design Innovation
Efficiency
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,879
11,655
0.691
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Diabetes
obesity
glycation
methylglyoxal
glyoxalase
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,520
11,425
0.257
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Network Security
DDoS Attack
Wireless Sensor Networks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,743
11,325
0.964
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,453
10,178
0.974
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Diabetes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,434
10,066
0.449
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Immunoassays
Antibody Engineering
Sensors.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,715
6,331
0.306
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Big Data
Artificial Intelligence
Crisis Informatics
AI for Social Good
Applied Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,174
6,701
0.730
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Distributed Systems Security
AI for Cybersecurity
Wireless Security
OSN Security and Privacy
Crit. Infr. Prot. (CIP)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,864
7,091
0.447
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Cloud and Edge Computing
Edge Intelligence
Blockchains
IoT
Network Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,396
6,597
0.892
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Sustainability
Built Environment
Life-Cycle Assessment
Climate Change
Resilient Infrastructure
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,800
6,538
0.961
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Energy
Renewable Energy
Sustainable Energy Carriers
Solar Fuels
Solar Desalination
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,596
5,953
0.903
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Nanobiotechnology for Energy and Environment
MXenes
Green Materials
Bioprocesses
Resource
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,613
5,883
0.890
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Network Security
Security Data Analytics
Private Data Sharing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,997
5,455
0.606
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
multi-modal data lakes
language models
data preparation
data-centric
visualization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,410
5,600
0.666
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Data Analytics
Data Security and Privacy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,299
5,417
0.653
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Health informatics
Artificial intelligence
Generative AI
LLMs
Systematic reviews
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,315
5,279
0.993
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Computer Vision
Machine Learning
Artificial Intelligence
Multimedia Signal Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,073
4,861
0.687
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Gasification
Pyrolysis
CCS
Process Integration
Simulation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,197
4,830
0.929
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Natural Language Processing
Software Engineering
Information Extraction
Social Media Analysis
Arabic NLP
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,139
4,238
0.825
* Last 6 Years Citation Counts Rankings
Rankings
1,820
1
1
Ranking Based On Selection: 1
Mowafa Househ
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,939
62,313
0.931
Mental Health Informatics
Digital Health
Global Health Informatics
Public Health Informatics
Responsible AI for Health
* Last 6 Years Citation Counts Rankings
Rankings
4,410
2
2
Ranking Based On Selection: 2
Gordon Mckay
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
96,599
35,979
0.372
Water Treatment
Waste to Value-added Products
* Last 6 Years Citation Counts Rankings
Rankings
10,990
6
3
Ranking Based On Selection: 3
Mourad Ouzzani
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,264
20,180
0.799
Data Quality
Data Cleaning
Data Integration
Database Systems
Data Management
* Last 6 Years Citation Counts Rankings
Rankings
13,028
7
4
Ranking Based On Selection: 4
Preslav Nakov
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,353
17,982
0.682
Computational Linguistics
Large Language Models
Fact-checking
Fake News
* Last 6 Years Citation Counts Rankings
Rankings
13,114
8
5
Ranking Based On Selection: 5
Hossam Hammady
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,870
17,897
0.948
cloud computing
distributed systems
machine learning
data analytics
* Last 6 Years Citation Counts Rankings
Rankings
27,208
26
9
Ranking Based On Selection: 6
Omar El Agnaf
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,948
11,040
0.481
Alzheimer's disease
Parkinson's disease
Neuroscience
Neurodegenerative diseases
protein misfolding
* Last 6 Years Citation Counts Rankings
Rankings
25,058
20
6
Ranking Based On Selection: 7
Muammer Koç
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,879
11,655
0.691
Sustainability
Energy
Additive Manufacturing
Design Innovation
Efficiency
* Last 6 Years Citation Counts Rankings
Rankings
25,840
21
7
Ranking Based On Selection: 8
Paul Thornalley
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,520
11,425
0.257
Diabetes
obesity
glycation
methylglyoxal
glyoxalase
* Last 6 Years Citation Counts Rankings
Rankings
26,186
23
8
Ranking Based On Selection: 9
Poongodi M
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,743
11,325
0.964
Network Security
DDoS Attack
Wireless Sensor Networks
* Last 6 Years Citation Counts Rankings
Rankings
30,757
31
10
Ranking Based On Selection: 10
Tareq Al Ansari
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,453
10,178
0.974
* Last 6 Years Citation Counts Rankings
Rankings
31,256
33
11
Ranking Based On Selection: 11
Alexandra Butler
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,434
10,066
0.449
* Last 6 Years Citation Counts Rankings
Rankings
60,808
78
16
Ranking Based On Selection: 12
Richard O Kennedy
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,715
6,331
0.306
Immunoassays
Antibody Engineering
Sensors.
* Last 6 Years Citation Counts Rankings
Rankings
56,178
63
13
Ranking Based On Selection: 13
Muhammad Imran
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,174
6,701
0.730
Big Data
Artificial Intelligence
Crisis Informatics
AI for Social Good
Applied Machine Learning
* Last 6 Years Citation Counts Rankings
Rankings
51,928
58
12
Ranking Based On Selection: 14
Roberto Di Pietro
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,864
7,091
0.447
Distributed Systems Security
AI for Cybersecurity
Wireless Security
OSN Security and Privacy
Crit. Infr. Prot. (CIP)
* Last 6 Years Citation Counts Rankings
Rankings
57,426
69
14
Ranking Based On Selection: 15
Aiman Erbad
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,396
6,597
0.892
Cloud and Edge Computing
Edge Intelligence
Blockchains
IoT
Network Intelligence
* Last 6 Years Citation Counts Rankings
Rankings
58,197
71
15
Ranking Based On Selection: 16
Sami G Al Ghamdi
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,800
6,538
0.961
Sustainability
Built Environment
Life-Cycle Assessment
Climate Change
Resilient Infrastructure
* Last 6 Years Citation Counts Rankings
Rankings
66,201
81
17
Ranking Based On Selection: 17
Yusuf Bicer
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,596
5,953
0.903
Energy
Renewable Energy
Sustainable Energy Carriers
Solar Fuels
Solar Desalination
* Last 6 Years Citation Counts Rankings
Rankings
67,265
82
18
Ranking Based On Selection: 18
Kashif Rasool
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,613
5,883
0.890
Nanobiotechnology for Energy and Environment
MXenes
Green Materials
Bioprocesses
Resource
* Last 6 Years Citation Counts Rankings
Rankings
74,478
91
20
Ranking Based On Selection: 19
Issa Khalil
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,997
5,455
0.606
Network Security
Security Data Analytics
Private Data Sharing
* Last 6 Years Citation Counts Rankings
Rankings
71,898
87
19
Ranking Based On Selection: 20
Tang Nan
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,410
5,600
0.666
multi-modal data lakes
language models
data preparation
data-centric
visualization
* Last 6 Years Citation Counts Rankings
Rankings
75,200
92
21
Ranking Based On Selection: 21
Yin Yang
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,299
5,417
0.653
Data Analytics
Data Security and Privacy
* Last 6 Years Citation Counts Rankings
Rankings
77,869
95
22
Ranking Based On Selection: 22
Alaa A Abd Alrazaq
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,315
5,279
0.993
Health informatics
Artificial intelligence
Generative AI
LLMs
Systematic reviews
* Last 6 Years Citation Counts Rankings
Rankings
86,641
106
23
Ranking Based On Selection: 23
Ferda Ofli
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,073
4,861
0.687
Computer Vision
Machine Learning
Artificial Intelligence
Multimedia Signal Processing
* Last 6 Years Citation Counts Rankings
Rankings
87,322
109
24
Ranking Based On Selection: 24
Muhammad Shahbaz
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,197
4,830
0.929
* Last 6 Years Citation Counts Rankings
Rankings
103,009
126
25
Ranking Based On Selection: 25
Hamdy Mubarak
Hamad Bin Khalifa University
Ar-Rayyan, Qatar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,139
4,238
0.825
Natural Language Processing
Software Engineering
Information Extraction
Social Media Analysis
Arabic NLP