IZUMI Tomonari
Keywords
Hobbies
Cooking Drawing Mathematics Crochet
Skills
Education
Hokkaido University
Graduate School of Information Science and Technology
National Institute of Technology (KOSEN), Kushiro College
Advanced Course of Electronic and Information Systems Engineering
National Institute of Technology (KOSEN), Kushiro College
Course in the Field of Information Engineering, Smart Mechanics Course, Department of Creative Engineering
Niiza Daini Junior High School, Saitama Prefecture
Ryouun Elementary School, Asahikawa City, Hokkaido
2010.04 - 2011.03 Tottori Nishi Elementary School, Kushiro City, Hokkaido
2009.04 - 2010.03 Sakae Elementary School, Obihiro City, Hokkaido
Experience
Activities
Geekten 2025 Competed in Preliminaries
Development of “holo” — a new walking map app powered by an AI camera and user questions (Canva)
Finance Summer 2025 (Financial Markets and Machine Learning)
An intensive course covering the foundations of financial markets and applications of machine learning in finance
Finance Summer 2025 (Financial Markets and Machine Learning)
An intensive course covering the foundations of financial markets and applications of machine learning in finance
Show 15 more past activities
RL Summer 2025 (Deep Reinforcement Learning)
A short-term intensive course on deep reinforcement learning, covering theory and applications (robotics, game AI, finance)
DGM Summer 2025 (Deep Generative Models)
An intensive hands-on course covering generative models, from fundamentals to advanced diffusion models
Global Consumer Intelligence (GCI) 2025 Summer
Studied the basics of AI and business problem-solving through data science
Hokkaido University × KOSEN Ideathon
Worked on building a DX system to centralize diverse and complex support for crime victims across institutions
KIC (KOSEN Incubate Committee) Project Selected for Late-Stage PoC Program・Awarded 500k JPY GAP Funding
Hakodate KOSEN Global Seminar 2023 Best Presentation Award
Proposed an online shop for recyclable food waste addressing food loss issues
Quantum Annealing for You 2nd Party! 5th Place
Developed a home care shift optimization app using quantum annealing
K-SEC Security Summer School 2022 2nd Place in CTF
A 2-day hands-on security course learning cyberattacks through IoT/AI lectures and CTF exercises
Startup Weekend Kushiro 3rd Place
Proposed a business model for a bereavement notification app
Cybersecurity "Top Gun Training"
Engaged in hands-on exercises on CSIRT incident response and cyberattack log analysis led by the Metropolitan Police Department
K-SEC Security Winter School 2021
A 2-day hands-on security course for KOSEN students learning cyberattack and defense in a virtual environment
Micro Hardening for Youth 2021
Engaged in hands-on exercises defending a virtual e-commerce site against cyberattacks
U-16 Programming Contest Kushiro Tournament 4th Place
Competed with a Ruby-based agent competition program
Doto × IoT Hackathon 2018 Vol.2
Proposed an SMS (Shelter Management System) utilizing Kintone and motion sensors
Awards
Special Research Presentation for Advanced Course Students, National Institute of Technology, Kushiro College, Encouragement Award
Awarded for academic contributions recognized through the presentation of research outcomes in the Advanced Course.
Outstanding Academic Award, Advanced Technologies for SDGs
Awarded for academic contributions recognized at the Advanced Technologies for SDGs held in March 2023.
Regional Promotion Cooperation Association, National Institute of Technology, Kushiro College, President's Award
Awarded for comprehensive achievements in academic studies and extracurricular activities during enrollment.
Research
Publications (2)
An Efficient Algorithm for the Detour Hinge Vertex Problem on Trapezoid Graphs
IEICE TRANS. INF. & SYST., VOL.E109–D, NO.3, MARCH 2026. DOI: 10.1587/transinf.2025FCL0001
Algorithm for Solving the Detour Hinge Vertex Problem on Circular-arc Graphs
Journal of Engineering and Digital Technology, Vol.11, No.1, pp.1-7, 2023.
Presentations (7)
- Multi-Channel Communication Algorithm for Multi-Player Multi-Armed Bandits without Collision Sensing, Tomonari Izumi*, Atsuyoshi Nakamura, The 40th Annual Conference of the Japanese Society for Artificial Intelligence (JSAI2026), 2Yin-A-08, Takasaki, Jun., 2026. [Manuscript]
- Parallel Communication Algorithm for Multi-Player Multi-Armed Bandit Problem without Collision Information, Tomonari Izumi*, Online Prediction Math Workshop 2026, Poster Session P5, Sapporo, Mar., 2026. [Poster]
- Development of an Efficient Algorithm for Identifying the Maximum Detour Hinge Vertex in Networks with Trapezoid Graph Structures, Tomonari Izumi*, Yoko Nakajima, Hirotoshi Honma, The Operations Research Society of Japan 2024 Spring Conference, pp.96--97, Tsukuba City, Mar., 2024.
- Development of an Efficient Algorithm for Identifying the Maximum Detour Hinge Vertex in Trapezoid Graphs, Tomonari Izumi*, Yoko Nakajima, Hirotoshi Honma, Toshihiro Fujito, Hyper Interdisciplinary Conference Hokkaido Forum 2023, Sapporo City, Sep., 2023.
- Development of a Graph Algorithm Aimed at Reducing Maintenance Costs in Lifeline Networks with Intersection Graph Structures, Tomonari Izumi*, Hirotoshi Honma, Yoko Nakajima, Toshihiro Fujito, Advanced Technologies for SDGs, Toyohashi University of Technology, Mar., 2023. Excellent Academic Award
- Algorithm for Maximum Detour Hinge Vertices problem of Trapezoid Graphs, Tomonari Izumi*, Hirotoshi Honma, Yoko Nakajima, The 7th International Conference on Science of Technology Innovation (STI-Gigaku2022), STI-9-9, pp.81, Nagaoka, Nov., 2022.
- Algorithm for Detour Hinge Vertex Problem of Circular-arc Graphs, Tomonari Izumi*, Syoma Nameki, Yoko Nakajima, Hirotoshi Honma, Toshihiro Fujito, The 41st JSST Annual International Conference on Simulation Technology (JSST2022), Student Session, pp.29-32, Iizuka, Sep., 2022.