Ryohei Nakano
Japanese name: ’†–ì —Ç•½
Japanese version is also available.

Current Position:
Researcher,
ex-Professor in Computer Science,
email: ryh88nkn [at] mediacat [dot] ne [dot] jp
Personal History:
- Received my Bachelor of Engineering and Doctor of Engineering in Mathematical Engineering from the University of Tokyo.
- After graduation, joined Nippon Telegraph and Telephone Corporation (NTT) and worked for its research laboratories for 28 years in the field of data processing, computer science, and artificial intelligence.
- After that, moved to Nagoya Institute of Technology as a full professor at the Department of Computer Science, and then moved to Chubu University as a full professor at the Department of Computer Science.
- My research interests have been focused on learning algorithms in the fields of machine learning and neural information processing, and I have invented with my colleagues more than 20 innovative learning algorithms. We published more than 50 journal papers, more than 100 conference papers, several book chapters, and got several academic paper awards. The number of citations for our papers amounts to more than 6,000 according to Google Scholar.
Hobbies:
- playing shogi (Japanese chess): Qualified as amateur two dan.
My favorite professional player is the young super-genius Sota Fujii.
It's so thrilling and fascinating to watch his games on net TV with AI evaluation.
I feel that professional shogi players and researchers are alike, struggling to find the best moves to get through the difficulties.
- listening to guitar music:
The following are among my favorite plays on YouTube.
supreme legend Narciso Yepes, whose guitar led me in my youth into the world full of enchantment and fantasy,
true genius John Williams,
noble maestro David Russell, and
marvelous talent Celil Refik Kaya,
Haruna Miyagawa.
- having English tea: mainly darjeeling produced in the tea gardens such as Castleton and Rohini.
- learning English: It's fun to learn English, making my categorical vocabulary note which now exceeds 55,000 lines.
Through the process, the world history and world mysteries from ancient to modern can be investigated.
My references are English Journal, Quora Digests, and thought-provoking books.
The more I learn, the more deeply I feel that I know nothing about them.
- getting to know prehistoric civilizations: Who on earth built them?
Our planet is full of those mysteries.
My favorite materials are
exquisite books by Graham Hancock,
ambitious TV series Ancient Aliens, and many relevant informative YouTube videos.
Awards:
- The 12th Telecommunication Advancement Foundation Award
(Telecom. System Technology Prize) (1997).
- Paper Award of Information Processing Society of Japan (1997).
- Paper Award of Japanese Society for Artificial Intelligence (1999).
- Paper Award of the Institute of Electronics, Information and
Communication Engineers (2000).
- Best Student Paper Award of ICAIA (Int. Conf. on Artificial Intelligence
& Applications) 2012 (2012) (as supervisor).
- Best Paper Award of ICMLDA (Int. Conf. on Machine Learning & Data Analysis)
2012 (2012).
- Best Paper Award of ICPRAM (Int. Conf. on Pattern Recognition Apps. and Methods) 2017 (2017).

Neural Information Processing and Machine Learning
- Learning Algorithms:
- 2nd-order learning for multi-layer perceptrons.
- Neural networks learning using singular regions.
- Advanced MLP models and learning.
- Variants of the EM algorithm.
- Support vector regression (SVR).
- Challenging Applications:
- Numeric law discovery using neural networks.
- Behavioral rules learning using classifier systems.
- L-system grammar induction.
- Job shop scheduling using genetic algorithms.
- Social network analysis.
Publications
statistics on citations:
Ryohei Nakano on Google Scholar.
Ryohei Nakano on ResearchGate.
Previous Teaching
Guest Professor (1998 - 2000)
Graduate School of Information Science
Nara Institute of Science and Technology.
Full Professor (1999 - 2008)
Department of Computer Science
Nagoya Institute of Technology.
Full Professor (2008 - 2018)
Guest Professor (2018 - 2022)
Department of Computer Science
Chubu University .
Part-time Lecturer
- Neural and Evolutionary Computation, at Mie University in 1993.
- Neural and Evolutionary Computation, at Nagoya Institute of Technology in 1993.
- Basic Problems of Artificial Intelligence, at Nagoya Institute of Technology in 1994.
- Adaptive Systems, at Nagoya Institute of Technology in 1995 - 1998.
- Theory on Language Analysis and Processing, at Nagoya Institute of Technology in 1999.
- Theory of Adaptive Systems, at Kyoto University in 1996 - 1997.
- Theory of Neural Computation, at Kyoto University in 1998 - 2000.
- Neural Information Processing, Artificial Intelligence, Information Theory, English for Information Technology, at Chubu University in 2018 - 2019.

Joint Research with Foreign Researchers
Those below, except the first, were done while I was working for
NTT Communication Science Labs.
- Prof. S.I. Gallant (Northeastern Univ.)
his visit: Oct - Dec, 1989
joint research topic: connectionist expert systems
our memory with photo
- Dr. Y. Davidor (Weizmann Institute)
his visit: Oct - Dec, 1992
joint research topic: statistical model of genetic algorithms
- Prof. B.E. Rosen (Univ. of Texas, Austin)
his visit: Jun - Aug, 1993
joint research topic: job shop scheduling using SA
- Prof. P. Esteves (Univ. of Chile)
his visit: Apr - Jun, 1995
joint research topic: modular neural networks
- Prof. G.E. Hinton (Univ. of Toronto)
his visit: Apr, 1997
joint research topic: Bayesian networks
our memory with photos
Hinton Sensei,
Congratulations on your winning the Nobel Prize!!
on Oct. 8, 2024
- Prof. J.A. Meyer (Ecole Normale Superieure)
his visit: May, 1997
joint research topic: computational model of adaptive behavior
our memory with photo
Last modified in: Oct 2025