Faculty information (degree and performance)
Faculty details
SAKAI Hiroshi
SAKAI Hiroshi
- Affiliation
- Faculty of Data Science Department of Data Science
- Position
- Professor
- Position
Researcher Information
Specialized fields
Applied mathematics, computational logic mathematics, rough set theory, table data analysis
Courses in charge
Linear algebraics, analysis, table data mathematical analysis, table data mathematical analysis exercises
Educational background
Graduated from the Department of Mathematics, Faculty of Science, Kyushu University in 1982.
1987 Department of Information Systems Science, Graduate School of Science and Engineering, Kyushu University
Determination of Ph.D.
Assistant Professor, Kyushu Institute of Technology
2024 Professor Emeritus, Kyushu Institute of Technology
Professor, Shimonoseki City University
Acquired degree
1989 Doctor of Science (Kyushu University)
Affiliated Society
International Raf Society, IEEE, Japanese Intelligence Society, Japanese Society of Mathematical Society
Research Keywords
Raf set and granular calculation, table data analysis, rule generation, incomplete information, NIS-appoli algorithms, decision-making support, machine learning through rule generation
Current research themes
"Rough assembly non-determined information analysis (RNIA) and its application"
We are conducting research to generate dependencies in tabular data as rules, and propose and realize NIS-appori algorithms in order to spread the generation function to incomplete information. The rules obtained by RNIA are used to assist decision-making, supplement missing values, extract and select characteristics, and grasp attribute dependencies. Since table data can be processed uniformly, it has high versatility, and discrete value table data, which is difficult to define average and dispersion, will lead to complementing statistical methods.
Major Research Results and Activities
[Thesis]
1.Efforts for machine learning by complementing missing values and rule generation in rough-set non-determined information analysis, Intelligence and Information Magazine, 2023, https://doi.org/10.3156/jsoft.35.4_746
2.Rough-set non-determined information analysis and NIS-appoli system - rule generation system based on possible world semantics - Intelligence and Information Magazine, 2020, https://doi.org/10.3156/jsoft.32.4_747
3.NIS-Apriori-based rule generation with three-way decisions and their application system in SQL, Information Sciences, 2020, https://doi.org/10.1016/j.ins.2018.09.008
4.Rough set-based rule generation and Apriori-based rule generation from table data sets: A survey and a combination, CAAI Trans. Intelligence Technology, 2019, https://doi.org/10.1049/trit.2019.0001
Approximately 150 papers, such as journals, international conferences, etc.
Results of commissioned projects for scientific research, etc.
Machine learning and its applications from incomplete information tables by rule generation
Scientific Research Fundamental Research (C) April 2020 to March 2024
7 representatives, etc. https://nrid.nii.ac.jp/ja/nrid/1000060201513/
Others (lectures, appearances, committee members, etc.)
[Lecture] An Overview of NIS-Apriori Based Data Mining and Its Software Tool in SQL (Plenary lecture)
The 2nd Asian Conference on Artificial Intelligence Technology, hosted by CAAI TiT, China, Chongqing, 2018
5 invited lectures, etc.
[Committee]
1.International Raf Society, Senior Members, and Advisory Members
2.CAAI Tran. Intelligence Technology Magazine (Associate Editor)
3.International advisory board (IJRSDA)
4.IJRIS (Editerial board member)
5.International Conference PC members such as IJCRS, ISMIS, IUKM, FIM, etc.
6.Japan Intelligence Information Society, Secretary-General of the Rough Group Theoretical Research Group
2024 Part-time lecturer (Statistics, Linear Mathematics B) Faculty of Engineering, Kyushu Institute of Technology
Class seminar
My seminar
Applied Mathematical Laboratory
Rough assembly non-determined information analysis (RNIA) and its applications
Social Activities
Response to SDGs
Based on Japan's industrial analysis, we will discuss the development and development of industries, especially the role of technological innovation (innovation) in industrial development.