
James Sharpnack
Duolingo
UC Davis Statistics Department
Research Areas
🎓 Educational AI & Assessment
Duolingo English Test • Computerized Adaptive Testing • LLM Cheating Detection
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🦠 Public Health & Epidemiology
COVID-19 Response • Wastewater Surveillance • PNAS Publications
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🌌 Astronomical Discovery
Gravitational Lens Detection • Unsupervised Learning
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🏢 Industry-Scale ML
Duolingo Monetization AI • Amazon Search • Recommendation Systems • Large-Scale Ranking
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📊 Statistical Theory
Graph Signal Processing • Scan Statistics • Trend Filtering
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Recent Updates
I had the honor of delivering a keynote talk at the NeurIPS 2024 Workshop on Large Foundation Models for Educational Assessment. The talk focused on...
AI for Education: Bridging Innovation and Responsibility at the 38th AAAI Annual Conference on AI
I am late to congratulating Xiaoliu Wu (graduated Winter 2022) and right on time to congratulate Ran Sun for completing their PhDs at UC Davis....
New results on consistency of nearest neighbor matching
What is relaxed label shift?
Throughout 2021, my lab worked with Heather Bischel’s lab at UC Davis on realtime Covid outbreak monitoring with wastewater testing. Prof. Bischel’s team, led by...
I have pinned down my data science/machine learning workflow and wanted to share it. It is based on using pip, virtualenv, and pycharm and is...
In 2019 we initiated a collaboration between my lab and Tucker Jones’s lab in UC Davis Physics. The idea was to detect gravitational lenses in...
I was blessed to see three of my Ph.D. students graduate, especially so because it was during the Covid-19 pandemic. It was a heroic effort...
In 2020, The city of Davis and UC Davis initiated Healthy Davis Together a comprehensive response to the Covid-19 pandemic. This project included an executive...
Congrats to two Ph.D. graduates from my lab: Xiaoyue Li and Dmitry Shemetov!
Liwei Wu (advised by myself and Cho-Jui Hsieh) recently defended his outstanding thesis in my department. In his research, Liwei has continually pushed the frontier...