About
Senior Data Scientist at Atrae, Inc., and VTubing as data science VTuber AIcia Solid.
PhD (Mathematical Science, the University of Tokyo)
Currently exploring research areas around diffusion models.
As AIcia Solid, I've uploaded 200+ lecture videos for AI, Data Science, and Mathematics.
Research & Publications
On Statistical Aggregation of 360-Degree Evaluation Data - A Bayesian Approach Incorporating Bias and Evaluation Capability (360度評価データの統計的集約について - バイアスと評価力を加味したベイズ的手法)
paper(pdf) - the annual conference of the virtual society 2025 conference paper (unreviewed) 🇯🇵 Japanese 2025
Proposal of Individual Equating Algorithm Using Survey Time Series Data (アンケート時系列データを用いた個人別等化アルゴリズムの提案)
paper(pdf) - the annual conference of the virtual society 2024 conference paper (unreviewed) 🇯🇵 Japanese 2024
Patent 7633001 (Personalized Survey Analysis System Using IRT-HMM Integration for Work Engagement Measurement) (特許7633001)
patent document - Japan Patent Office patent 🇯🇵 Japanese filed 2020 - granted 2024
Definition and Theoretical Analysis of New Information Transmission Efficiency in Organizational Network Analysis (組織ネットワーク分析における新しい情報伝達効率の定義とその理論解析)
paper(pdf) - the annual conference of the virtual society 2023 conference paper (unreviewed) 🇯🇵 Japanese 2023
On the Phenomenon of "360° Rotation = -1 Times" in Spin Appearing in 4D Visualization Using VR (Spin における「360°回転 = -1倍」が VRを用いた4次元可視化で出現する現象について)
paper(pdf) - the annual conference of the virtual society 2022 conference paper (unreviewed) 🇯🇵 Japanese 2022
On the Natural Emergence of Temperature Concept in Item Response Theory (項目反応理論における温度概念の自然な出現について)
paper(pdf) - the annual conference of the virtual society 2020 conference paper (unreviewed) 🇯🇵 Japanese 2020
Fukaya categories in Koszul duality theory
arXiv:1701.00429 2017
On the Fukaya-Seidel categories of surface Lefschetz fibrations
arXiv:1607.02263 2016
Books
Calculus + Linear Algebra for Uncompromising Data Analysis (妥協しないデータ分析のための 微積分+線形代数入門)
Covers definitions, formulas, mathematical foundations, and applications
Amazon 🇯🇵 Japanese 2024
Introduction to Models for Data Science and AI (本質を捉えたデータ分析のための分析モデル入門)
Covers statistical models, machine learning, deep learning, reinforcement learning, and multivariate analysis
Amazon 🇯🇵 Japanese 2022
VTubing as AIcia Solid
VTubing as AIcia Solid, a data science VTuber with 200+ lecture videos covering AI, Data Science, and Mathematics.
🎬 YouTube Channel: @AIcia_Solid
📝 All videos are in 🇯🇵 Japanese 🇯🇵, but I hope YouTube will auto-translate in some day🙏
Lecture Series
🧠 Deep Learning
✅ completed, 43 videos
🎮 Reinforcement Learning
🔄 ongoing
🎨 Generative Models
🔄 ongoing
⚛️ Quantum Computing
✅ completed, 5 videos
📊 Multivariate Analysis
✅ completed, 11 videos
🎲 Bayesian Statistics
✅ completed, 6 videos
📈 Stochastic Differential Equation
✅ completed, 9 videos
🔢 Linear Algebra
✅ completed, 39 videos
Experience
Senior Data Scientist
2016.10 - PresentAtrae, Inc.
- Founded the Data Science Team as the first Data Scientist
- Managing the ML/DL Study Group since 2019 (hands-on, half-year course, ongoing)
- Added statistical features to Wevox (Organization Empowering Platform)
- Obtained patent (Patent 7633001)
- Introducing MLOps to Green (Job-Hunting service) (ongoing)
Skills Definition Committee Member (スキル定義委員)
2019.09 - PresentJapan Data Scientist Society (データサイエンティスト協会)
- Update the skill checklist for Data Scientists
- Involved in the Data Scientist Certification program
Senior Project Researcher (SFC上席所員)
2019.04 - PresentKeio University, Shimazu Lab (慶應義塾大学 総合政策学部 島津明人研究室)
- Research assistance (gathering survey subjects from company customers, etc.)
Visiting Academic Staff (招へい研究員)
2025.11 - PresentOsaka University D3 Center (大阪大学 D3センター)
- Studying diffusion models
Awards
MEXT Minister's Award (文部科学大臣賞)
2006Ministry of Education, Culture, Sports, Science and Technology
- Top Successful Candidate of the Practical Mathematics Proficiency Test Level 1 (実用数学技能検定1級の最優秀合格者)
Company Awards at Atrae, Inc.
2018 - 2024Atrae, Inc.
- 2018/04, MVP, for contribution to advancing marketing by data analysis
- 2019/04, Best Team Award (Wevox Team), for contribution to the growth of new business initiatives
- 2020/10, Best Team Award (Data Science Team), for building and operationalizing the Team
- 2024/04, MVP, for contribution to data & AI strategy and the cultivation of a data-and-AI-driven culture
Winner and Special Creativity Award, World Computer Shogi Championship 35
2025Computer Shogi Association (CSA, コンピュータ将棋協会)
- 2025/05, Winner and Special Creativity Award, as Suisho Team (第35回世界コンピュータ将棋選手権において、水匠チームとして、優勝・独創賞特別賞受賞)
Education
Ph.D. in Mathematical Science
2017the University of Tokyo
Mathematical Physics: Application of type A brane theory in superstring theory to the representation theory of finite dimensional algebra
- Published research papers in mathematical physics and representation theory
- Specialized in the intersection of string theory and algebraic structures
Previously, I received my B.S. and M.S. degrees in Mathematical Science at the University of Tokyo in 2012 and 2014 respectively.