Zheng Liu

Experience

1. Quantitative Analytics Specialist

   Wells Fargo

   Jul 2021 — Present

   Independently validated 22 quantitative models from fields of third-party fraud detection, cyber security, sentiment analytics NLP, and speech recognition models. Identified and managed the model of risks in terms of stability, fairness, generalization, explainability, and efficiency- Developed challenging deep-learning models, and fine-tuned transformer models for robustness and performance testing. Performed model-agnostic explainability analysis and model sensitivity testing in a cloud computing platform- Standardized and centralized validation tasks per model type to reduce duplication of effort. Modularized testing functions and enabled customized settings for code adaptivity- Analyzed the COVID-19 impact on the balance forecasting model. Explored feasible opportunities to improve model stability with time series adjustment. Conducted a developmental pipeline for automatic model selection- Supported Wells Fargo Early Talent program in developing recruiting testing, and hosting project competition- Volunteered to inspire local high school students with essential data science techniques.

Education

• Qingdao University of Technology

  Bachelor's Degree

  2014 — 2018

• North Carolina State University

  Master's Degree

  2019 — 2020