Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
Mathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
8
0.276
* Total i10 IndexRankings
Ranking Based On Selection :2
Applied mathematics
Topological data analysis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
23
22
0.957
* Total i10 IndexRankings
Ranking Based On Selection :3
statistics
psychometrics
biostatistics
machine learning
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
18
0.818
* Total i10 IndexRankings
Ranking Based On Selection :4
Biomathematics
Operator Algebras
Dynamical Systems
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
11
0.550
* Total i10 IndexRankings
Ranking Based On Selection :5
mathematical engineering
nonlinear systems
network science
optimization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
7
0.350
* Total i10 IndexRankings
Ranking Based On Selection :6
Mathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
9
0.600
* Total i10 IndexRankings
Ranking Based On Selection :7
cosmology
instrumentation
detectors
astrophysics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
* Total i10 IndexRankings
Ranking Based On Selection :8
Numerical analysis of interface problems
mathematical fluid dynamics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
Hirofumi Yamada
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
8
0.276
Ippei Obayashi
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
23
22
0.957
Applied mathematics
Topological data analysis
Michio Yamamoto
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
18
0.818
statistics
psychometrics
biostatistics
machine learning
Tsuyoshi Kajiwara
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
11
0.550
Biomathematics
Operator Algebras
Dynamical Systems
Norikazu Takahashi
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
7
0.350
mathematical engineering
nonlinear systems
network science
optimization
Takeshi Ikeda
Okayama University of Science
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
9
0.600
Sl Stever
Okayama University
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
cosmology
instrumentation
detectors
astrophysics
Koya Sakakibara
Okayama University of Science
Okayama, Japan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
Numerical analysis of interface problems
mathematical fluid dynamics