i10 Productivity
Rankings

Okayama University/ ScientistsNatural Sciences / Mathematical Sciences i10 Productivity Rankings 2025

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
Japan
Hirofumi Yamada
Mathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
8
0.276
* Total i10 IndexRankings
Ranking Based On Selection :2
Japan
Ippei Obayashi
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
Japan
Michio Yamamoto
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
Japan
Tsuyoshi Kajiwara
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
Japan
Norikazu Takahashi
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
Japan
Takeshi Ikeda
Mathematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
9
0.600
* Total i10 IndexRankings
Ranking Based On Selection :7
Japan
Sl Stever
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
Japan
Koya Sakakibara
Numerical analysis of interface problems
mathematical fluid dynamics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 1
Hirofumi Yamada
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
29
8
0.276
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 2
Ippei Obayashi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
23
22
0.957
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 3
Michio Yamamoto
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
18
0.818
statistics
psychometrics
biostatistics
machine learning
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 4
Tsuyoshi Kajiwara
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
11
0.550
Biomathematics
Operator Algebras
Dynamical Systems
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 5
Norikazu Takahashi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
7
0.350
mathematical engineering
nonlinear systems
network science
optimization
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 6
Takeshi Ikeda
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
9
0.600
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 7
Sl Stever
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
cosmology
instrumentation
detectors
astrophysics
* Total i10 Index Rankings
Rankings
Ranking Based On Selection: 8
Koya Sakakibara
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
Numerical analysis of interface problems
mathematical fluid dynamics