Lionel Yelibi

Lionel Yelibi

Applied Scientist & Quantitative Researcher - Emerging Capabilities Research Group

Discover Financial Services

UCT Statistical Finance

Biography

I am a Lead Researcher at one of Capital One Data Science Research team. My research focuses on leveraging machine learning techniques to extract signals from data. We work with large tabular datasets to predict risk behavior for financial use-cases. Our use-cases go from feature noise cleaning, feature selection in high dimensional regimes, Embedding and clustering very large datasets, explainability, fairness, and bias methods for both supervised and unsupervised models, and finally supervised learning model development.

I’m also a PhD student at the University of Cape Town 🇿🇦 (https://science.uct.ac.za/department-statistics) under the supervision of Prof. Tim Gebbie where my PhD projects focus on theoretical factor models and correlation matrices, Statistical Analyses of emergence and extreme events in complex systems using unsupervised ML methods (i.e. Dimensionality Reduction, Matrix Decomposition, Data Clustering) with application to synthetic, economic, financial, and industrial data.

Interests
  • Econophysics
  • Quantitative Finance
  • Statistical Mechanics
  • Network Science
  • Machine Learning
  • Manifold Learning
Education
  • Ph.D. in Statistical Sciences (2028)

    University of Cape Town

  • M.Sc. in Statistical Sciences (2019)

    University of Cape Town

  • BSc in Physics

    Indiana University

Experience

 
 
 
 
 
Lead Research Scientist
Capital One
May 2022 – Present Chicago
 
 
 
 
 
Investment Research Analyst
Mass PRIM
Nov 2020 – Mar 2022 Massachussets
 
 
 
 
 
Machine Learning Researcher
Boston Fusion Corp.
Jan 2020 – Nov 2020 Massachussets
 
 
 
 
 
Research Assistant
University of Cape Town
Aug 2017 – Dec 2019 South Africa