YaxinZheng

Mathematics & statistical learning

Master’s student at Université Paris-Saclay, working on statistical modeling, machine learning and optimization.

Sample paths of a Brownian motion, simulated in your browser.

Independent project, in development

MimooPet

A pixel pet that lives on your desktop and learns to talk like someone you know. I’m building it on my own in Godot, with pixel-art characters and a small language model that runs entirely on the player’s computer.

Meet the pets

Education

Trained in mathematics and statistics, with a focus on learning from data.

2025 – 2027

Université Paris-Saclay

Master’s in Mathematics and Statistical Learning

Mathématiques et Apprentissage Statistique. Selective program, 120 ECTS.

  • Statistical modeling: inference, regression, learning theory
  • Machine learning: classification, clustering, cross-validation
  • Numerical optimization and operations research: linear programming, gradient methods
  • Advanced probability and stochastic processes
  • Scientific programming in Python (NumPy, pandas, scikit-learn), SQL and R

2021 – 2025

Université Paris Nanterre

Bachelor’s in Applied Mathematics and Computer Science

Licence MIASHS, data and economic analysis track.

  • Mathematical modeling: linear algebra, analysis, numerical optimization
  • Applied statistics: estimation, hypothesis testing, regression, numerical methods
  • Data programming in Python, R, SQL and SAS; database design and data cleaning
  • Economics: industrial organization, public policy, macroeconomic cycles

Experience

Language models, risk analysis and software development.

Mar – Sep 2026

ZH Network

Large language model project

  • In-house large language model built into a client company’s own office automation platform
  • Cleaned and prepared the training data
  • Continued pre-training: took part in the continued pre-training of a Qwen3.5-based model on the cleaned domain data, together with the algorithm team

Skills: Large language models (LLM), data cleaning

Jun – Sep 2025

China Cinda Asset Management

Beijing, China

Financial Risk Analyst Intern

Internship, on-site

  • Developed and tested computation operators: reusable modules for data processing and feature calculation, used in the team’s risk models
  • Took part in the risk analysis work of the team

Skills: Risk analysis, Python

May – Sep 2023

Chengdu Airlines

Chengdu, China

Application Developer Intern

Internship, on-site

Skills: Visual Basic, Python

Jun – Sep 2022

V7

Paris area

Web Developer

Internship, on-site

Skills: HTML, CSS

Jan – Apr 2018

UNESCO

Andorra la Vella, Andorra

Project Assistant

Internship, on-site

Skills: SG&A, Adobe Photoshop

Skills

Statistics
Regression (linear, logistic, ridge, lasso), statistical inference (tests, estimation, bootstrap), classification, clustering, cross-validation
Programming
Python (NumPy, pandas, scikit-learn, Matplotlib), SQL, R, SAS, MATLAB, C, LaTeX
Tools
Excel, Tableau, PowerPoint, Word, Photoshop, Illustrator
Languages
Chinese (native), French (C1), English (C1), Catalan (B2), Spanish (B1)

Contact

Write to me about mathematics, data or MimooPet. I’ll reply as soon as I can.

zhengyaxin10@gmail.com +33 7 83 26 36 18