Xinyi Ni

Machine Learning Scientist @ Tiktok | PhD @ UC Davis | RL, RLHF, LLM

Role
Machine Learning Scientist at TikTok
Location
San Jose, CA, US
LinkedIn followers
500 followers

About Xinyi Ni

Ph.D. specializing in risk-sensitive reinforcement learning (RL), with expertise in integrating large language models (LLMs) with RLHF. Skilled in statistical analysis, data-driven modeling, and building scalable ML solutions.

Experience

  1. Machine Learning Scientist

    TikTok

    Jan 2025 — Present · San Jose, CA, US

    TikTok Core Recommendation & Content Ecosystem

Education

  • University of California, Davis

    Doctor of Philosophy - PhD

    2019 — 2024

  • Zhejiang University

    Bachelor of Engineering - BE

    2015 — 2019

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Xinyi Ni — Machine Learning Scientist at TikTok in San Jose, CA, US | Unifers