Rui Yuan
AI Research Scientist at Lexsi Labs
Paris, Ile-de-France
Summary
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Senior🎓
Top SchoolRui Yuan is an AI Research Scientist based in Paris with 10 years of experience bridging applied mathematics and cutting-edge LLM research. He holds a PhD in Applied Mathematics from a Meta AI–Télécom Paris CIFRE program and has driven generative AI, in-context learning, and RLHF work at Stellantis before focusing on reinforcement-learning fine-tuning for LLMs at Lexsi Labs. His background spans reinforcement learning, optimization, and deep learning, and he brings practical large-scale engineering experience from industry internships involving Hadoop, Spark, and production-ready predictive models. Rui combines rigorous theoretical training with hands-on experimentation in RLFT and in-context adaptation, often translating optimization insights into scalable model fine-tuning strategies. Notably, his early research on stochastic optimization and parallel primal-dual methods was recognized at JDSE2018, reflecting a long-standing thread of marrying algorithmic theory with applied systems.
10 years of coding experience
3 years of employment as a software developer
Master of Science (MSc) Mathematics Computer Vision and Machine Learning, Master of Science (MSc) Mathematics Computer Vision and Machine Learning at ENS Paris-SaclayHigh School, High School at The Affiliated High School of South China Normal UniversityMaster of Science - MS Data Science, Master of Science - MS Data Science at École PolytechniqueMPSI-MP** Mathematics Physics Chemistry Computer Science, MPSI-MP** Mathematics Physics Chemistry Computer Science at Lycée Janson-de-Sailly
English, French, Chinese, ChineseProgramming languages (1)
Github contributions (5)
Rui-Yuan91/rui-yuan91.github.io
Feb 2022 - Mar 2023
Contributions:51 commits, 70 pushes in 1 year 1 month
Daheihei/iris
Jul 2017 - Jul 2017
Contributions:12 pushes, 1 branch, 1 issue in 5 days
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