Takuya Kataiwa

🇯🇵 🇬🇧

Affiliation: 3rd‑year, Department of Information & Social Sciences, Faculty of Informatics, Shizuoka University
Born: 2004, Ishikawa, Japan

I study informatics with a focus on the mathematical understanding of language and intelligence through statistical, geometric, and information‑theoretic perspectives. My interests include symbol & language emergence, and I value translating theory into social applications.

Research Profiles / Links:
Hatena Blog · GitHub · Qiita · LinkedIn · Researchmap

Research Interests

Keywords: Embedding representations, Geometry, Mechanistic interpretability, Symbol emergence

Research Achievements

International Conference

• Enhancing LLM4Decompile with Obfuscated Source Code for Optimized Assembly
  Saito Ryota, Takuya Kataiwa, Tetsushi Ohki.
  The Network and Distributed System Security (NDSS) Symposium 2025.
  [details] [PDF] [poster]

Domestic Conference

• Measuring Intrinsic Dimension of Token Embeddings
  Takuya Kataiwa, Cho Hakaze, Ohki Tetsushi.
  The 39th Annual Conference of the Japanese Society for Artificial Intelligence (2025).
  [details]
• Simulator for Social Norm Formation by Aggregating Individual Behavioural Decisions
  Jun Tajima, Takuya Kataiwa, Kenya Sasaki, Junya Morita.
  The 39th Annual Conference of the Japanese Society for Artificial Intelligence (2025).
  [details]
• Measuring Intrinsic Dimension of Embedding Representations
  Takuya Kataiwa, Cho Hakaze, Ohki Tetsushi.
  The 31st Annual Meeting of the Association for Natural Language Processing (2025).
  [details] [PDF]
• A Method Using Dynamic Graph Neural Networks for Emotional Contagion in Local Communities
  Takuya Kataiwa, Junya Morita.
  The 21st Informatics Workshop (2023).
  [details]

Preprint

• Measuring Intrinsic Dimension of Token Embeddings
  Takuya Kataiwa, Cho Hakaze, Ohki Tetsushi.
  [arXiv]

Fellowships & Programs

• Cybozu Labs Youth (14th & 15th cohorts) — Accepted | [Official]
• Advance Lab (2nd cohort) — Accepted | [Official]
  Theme: Ensuring safety & reliability of machine‑learning model memory via geometric analysis
• UT‑Lab Membership — Accepted | [Official] [details]
• Security Camp National 2025 (Class D) — Alumni | [Official]
• Nippon Foundation HUMAI Program (Category A) — Accepted | [Official]

Awards

• Hackathon — Open HackU 2024 Tokyo — Excellence Award (Top 6.7% – 2 of 30 teams) — Hosted by LINE Yahoo
• Ideathon — Shizuoka University Ideathon & Datathon 2025 — Grand Prize (Top 16.7% – 1 of 6)
  Challenge Open Governance (COG 2024) — Semi‑Finalist (Top 22.7% – 25 of 110)

Competitive Experience

• Competitive Programming: AtCoder — Green
  Mathematics Competition: Online Math Contest — Aqua
  CTF (Capture The Flag):
  Asia Cyber Security Challenge (Top 10.6 % - 47 of 456)
  SECCON for beginners CTF (Top 6.4 % - 57 of 880)
  DIVERS OSINT 2025 (Top 2.5% – 16 of 668)
  SAN DIEGO CTF 2025 (Top 8.9% – 24 of 269)
  CRATE CTF 2024 (Top 5.7% – 13 of 227)
  DIVERS OSINT 2024 (Top 5.7% – 26 of 453)

Management Experience

• ANCHOR — Agora for Neuroscience, Consciousness, Human, Organisms & Related Research (2024‑10 – Present)
  Reading group on computational & cognitive neuroscience. [Official] [Discord]
• Shizudai LT Tournament — Techno Festa Edition 2024 — Executive Chair (2024‑08 – 2024‑11) [details]
• CPC Spring Camp 2025 — Executive Committee (2024‑12 – 2025‑03) [Official]
• CPC Student Workshop 2025 — Vice Chairman (2024‑12 – 2025‑03) [Official]
• Symbol Emergence Outreach Team — Committee Member (2025‑5 – 2025-9) [Official] [Twitter] [YouTube] [Note]
• IYNA Japan Chapter — Advisor (2024‑12 – Present) [Official] [Twitter] [Instagram] [Note]
• iGEM HG‑Tokyo — Advisor (2025‑04 – Present) [Twitter]

Projects

• Mainly hackathon or coursework projects:
• IYNA Japan Website — July 2025 [repo] [link]
• CPC‑web — Mar 2025 [repo] [link]
• Bansho — Jan 2025 (Course assignment) [repo] [link]
• SpeakUp — HackU Kanazawa 2024 [repo] [video]
• Difflog — HackU Tokyo Vol.2 2024 [repo] [video]
• Hoikuru‑zu — HackU Tokyo Vol.1 2024 [repo] [video]

Other

• Selected Quotations (Japanese)

I enjoy deep conversations, great food, and travelling. Learning something new and widening my worldview is my greatest motivation.