Ryan Marcus, assistant professor at the University of Pennsylvania. Using machine learning to build the next generation of data systems. 
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Databases in the wild

Diagrams from the two papers below

There is a gap between how academics and industry practitioners approach database systems. Assumptions made by academics are not always safe in the real world, and assumptions made by industry practitioners are sometimes overfit to their specific use cases. This project questions assumptions of both groups and aims to bridge the gap between them.

Papers

Preprints

“EXPLAIN Yourself! Finding Query Planner Stalls Across DBMSes” Geoffrey X. Yu, Ryan Marcus, Tim Kraska. Posted arXiv preprint ‘26. (doi)

People