CV

Curriculum vitae and research experience.

Contact Information

Name Ryo Mitsuhashi
Role Undergraduate Student @ Princeton University
Email rm4411[at]princeton.edu

Summary

Senior at Princeton University majoring in Computer Science with minors in Applied and Computational Mathematics, Humanistic Studies, and Statistics and Machine Learning. Applying to PhD programs in NLP for Fall 2027.

Experience

  • Jan 2026 - Mar 2026

    Tokyo, Japan

    Research Intern
    Hitachi Central Laboratory
    • Assessed Chain of Thought (CoT) faithfulness via control experiments and unlearning techniques
    • Accepted to ACL 2026 Student Research Workshop (oral)
  • May 2025 - Jan 2026

    Doha, Qatar

    Research Intern
    Qatar Computing Research Institute
    • Extracted output language features in Cross-Layer Transcoders (CLT)
    • Developed a novel dataset for antonym prediction and closed-set enumeration
    • Accepted to EMNLP 2026 (Main)
  • Aug 2025

    Tokyo, Japan

    Engineering Intern
    SB Intuitions
    • Applied GRPO to Sudoku and competitive coding with NeMo-RL (~90% Sudoku accuracy on Qwen2.5 7B)
  • Dec 2024 - Jan 2025

    Tokyo, Japan

    Software Engineering Intern
    Fixstars Corporation
    • Built a memory consumption estimator for Llama 3 architectures
    • Automated evaluation with Bash and Python on a Megatron-LM environment
  • May 2024 - Aug 2024

    Princeton, NJ

    Research Assistant
    Andlinger Center for Energy and the Environment, Princeton University
    • Developed a web platform visualizing energy transition bottlenecks
    • Extended an open-source traffic simulator with custom JS/CSS/HTML visualizations

Education

  • Sep 2023 - May 2027

    Princeton, NJ

    B.A.
    Princeton University
    Computer Science
    • Minors: Applied and Computational Mathematics, Humanistic Studies, Statistics and Machine Learning
    • Cumulative GPA: 3.82/4.0; Major GPA: 3.97/4.0
  • Apr 2023 - Aug 2023

    Tokyo, Japan

    B.S. (partial)
    University of Tokyo
    Computer Science
    • Enrolled for a semester and completed 15 credits toward the Bachelor of Science

Research Projects

  • May 2026 - Present

    Princeton, NJ

    Deconstructing In-Context Learning (Prof. Tom Griffiths)
    Princeton University
    • Analyzing memorization and generalization failures in ICL and improving them via interventions
  • Jan 2026 - Present

    Princeton, NJ

    MLE Agent (Prof. Karthik Narasimhan)
    Princeton University
    • Testing how SFT improves metrics and agent behavior on MLE Bench
  • Feb 2026 - Present

    Princeton, NJ

    OccludeBench (Prof. Zhuang Liu)
    Princeton University
    • Benchmark testing VLMs’ ability to recover fully occluded objects
    • Accepted to Computer Vision in the Wild, CVPR 2026
  • Mar 2026 - May 2026

    Princeton, NJ

    Compute–Supervision Tradeoff in RLVR
    Princeton University
    • Studied how rollouts compensate for noisy verifiers in GRPO
    • Accepted to CTB (Combining Theory and Benchmarks), ICML 2026
  • Nov 2025 - Jan 2026

    Princeton, NJ

    Guess the Unified Model
    Princeton University
    • Classifier attributing image origins across 7 open- and closed-source models
    • Accepted to ICLR 2026 DATA-FM workshop
  • Mar 2025 - Present

    Princeton, NJ

    Fast Convolution of Toeplitz Kernel (Prof. Marc Gilles)
    Princeton University
    • Optimizing Chebyshev-series convolution from O(n³) toward O(n²)

Awards

  • 2023
    Toshin Study Abroad Scholarship
    Toshin

    95,000 USD/year for four years of undergraduate study abroad

  • 2026
    OURSIP Summer Grant
    Princeton University

    7,200 USD for on-campus summer research

  • 2026
    Conference Travel Grants
    Princeton University

    ICLR 2026 (1,250 USD from university); ACL 2026 (600 USD from university + 750 USD workshop grant)

Skills

Programming: Python (4+ years), Java, JavaScript; C/C++, SQL, Golang, OCaml, MATLAB, PHP, R
Tools: Git/GitHub/GitLab, Linux, macOS, Windows, Slurm/PBS, Docker/Apptainer

Languages

English : Fluent
Japanese : Native
Spanish : Beginner
Korean : Beginner

Leadership and Activities

  • Sep 2023 - Present

    Co-President
    Japanese Student Association, Princeton University
  • Sep 2023 - Present

    Member
    Men's Club Soccer, Princeton University
  • Sep 2023 - Dec 2024

    Working Unit Member
    Civic Leadership Council, Princeton University
  • Jun 2022 - Apr 2024

    Core Member
    Mielka (voter engagement nonprofit, Japan)
  • Apr 2020 - Mar 2022

    Captain
    Varsity Soccer Team (High School)

Coursework

Computer Science: Reasoning about Computation (TA), Computer Vision, Distributed Systems, Theory of Computation, Reinforcement Learning, NLP
Mathematics: Numerical Analysis, Graph Theory, Complex Analysis

Academic Service

  • 2026

    Peer Reviewer
    ICLR 2026 DATA-FM Workshop