CV

Profile

• Full-time Researcher, Okazaki Laboratory, Institute of Science Tokyo — Jun 2025 to present (transitioning to Specially Appointed Assistant Professor on 1 Sep 2025; advisor: Prof. Naoaki Okazaki)
• Lead AI Engineer, ELYZA, Inc. — Apr 2024 to May 2025
• Former JSPS Research Fellow (DC2 2022–2023, PD 2023–2024)

Education

• Ph.D. in Information Science and Technology, The University of Tokyo, Mar 2023
• M.S. in Information Science and Technology, The University of Tokyo, Mar 2020
• B.E. in Electrical and Electronic Systems Engineering, Saitama University, Mar 2018

Professional Experience

• Researcher (full-time), Okazaki Laboratory, Institute of Science Tokyo — Jun 2025 to present
  Driving trustworthy NLP and safety research; Specially Appointed Assistant Professor appointment effective Sep 2025.
• Lead AI Engineer, ELYZA, Inc. — Apr 2024 to May 2025
  Led generative AI R&D and deployment for healthcare and industrial collaborations.
• Researcher (part-time), Okazaki Laboratory, Institute of Science Tokyo — Oct 2024 to May 2025
  Conducted research on trustworthy, safety-aware natural language processing.
• JSPS Research Fellow (PD), The University of Tokyo / Institute of Science Tokyo — Apr 2023 to Mar 2024
  Advanced studies on knowledge attribution and bias mitigation in large language models.
• JSPS Research Fellow (DC2), The University of Tokyo — Apr 2022 to Mar 2023
  Investigated model analysis techniques and multilingual semantics in language models.

Research Interests

• Trustworthy natural language processing and AI safety
• Knowledge attribution and memorization dynamics in multilingual LLMs
• Methods for mitigating social bias in language technologies
• Model interpretability and neuron analysis for NLP systems

Selected Publications

• Daisuke Oba, Masahiro Kaneko, Danushka Bollegala. “In-contextual Gender Bias Suppression for Large Language Models.” Findings of EACL 2024.
• Xin Zhao, Naoki Yoshinaga, Daisuke Oba. “Tracing the Roots of Facts in Multilingual Language Models: Independent, Shared, and Transferred Knowledge.” EACL 2024.
• Xin Zhao, Naoki Yoshinaga, Daisuke Oba. “What Matters in Memorizing and Recalling Facts? Multifaceted Benchmarks for Knowledge Probing in Language Models.” Findings of EMNLP 2024.
• Daisuke Oba, Ikuya Yamada, Naoki Yoshinaga, Masashi Toyoda. “Entity Embedding Completion for Wide-Coverage Entity Disambiguation.” Findings of EMNLP 2022.
  For the full list, please visit the publications page.

Honors & Awards

• 2025 — NLP若手の会 第 20 回シンポジウム スポンサー賞（Polaris.AI/）
• 2025 — 2025 年度人工知能学会 全国大会 (第39回) 優秀賞
• 2025 — 言語処理学会 第 31 回年次大会 スポンサー賞（日立製作所）
• 2022 — 情報処理学会 2022 年度研究会推薦 博士論文速報
• 2021 — IIS PhD Student Live 2021 Second Prize
• 2020 — JASSO 優れた研究業績による第一種奨学金半額免除

Fellowships & Competitive Funding

• 2023 — JSPS 学振 PD 特別研究員奨励費 (800,000 JPY)
• 2022 — JSPS 学振 DC2 特別研究員奨励費 (900,000 JPY)
• 2022 — Microsoft Research Asia D-CORE Program Collaborative Research Grant (1,070,000 JPY)
• 2021 — トヨタ・ドワンゴ高度人工知能人材奨学金 (100,000 JPY)

Major Collaborative Programs

• Cabinet Office SIP Integrated Healthcare System (Theme 1-2): Project manager for Japanese medical LLM development with Sakura Internet and partners
• METI/NEDO Generative AI Accelerator Challenge (GENIAC) — Cohort 1 participant receiving compute resources and community support
• AIST ABCI Large-scale Generative AI R&D Support Program — Access to large-scale compute resources for LLM and diffusion model research

Media Coverage

• 2024 — Meta Llama Community Stories: Japanese LLM achievements at ELYZA (Meta)
• 2024 — “About Possible Future Case” (UTokyo-IIS Magazine) highlighting doctoral research

Download

You can download the full CV (in Japanese) as a PDF: Daisuke Oba CV – June 2025.