Data Science & AI Fellow 2026-2027

Sophie Pesek

Data Science & AI Fellow 2026-2027
Rausser College of Natural Resources (RCNR)
Energy and Resources Group (ERG)

Sophie Pesek is a PhD student in the Energy and Resources Group (ERG) at UC Berkeley. She is interested in using causal inference and remote sensing techniques to support vulnerable communities in adapting to climate change. Before Berkeley, she was a research analyst at Resources for the Future in Washington, DC, where her work focused on policy for coastal flooding, extreme weather events, and the energy transition. She holds a BA in Environmental Science and Engineering from Harvard University.

Stacy Chen

Data Science & AI Fellow 2026-2027
School of Public Health
Health Policy and Management Division

Stacy Chen is a Health Policy Ph.D. student at UC Berkeley. She uses quantitative, quasi-experimental research methods and organizational theory to study how healthcare organizations manage and deliver services to improve healthcare quality, with a particular focus on language services for limited English proficient patients. Prior to graduate school, Stacy was a healthcare researcher at the MITRE Corp supporting government-funded research and development projects such as creating income mobility datasets using linked administrative and survey data and evaluating virtual care...

Yu-Tung Yeh

Data Science & AI Fellow 2026-2027
Department of Bioengineering

I'm a PhD student in the UCSF–UC Berkeley Joint Bioengineering Program. I am interested in how neural circuits communicate across brain areas and learn spatial maps, using recurrent networks and state space models trained on high-density electrophysiology recordings from hippocampus and prefrontal cortex.

Zabdi J. Salazar

Data Science & AI Fellow 2026-2027
Jurisprudence and Social Policy

Zabdi Salazar is a Ph.D. candidate in Jurisprudence and Social Policy at UC Berkeley and a graduate of Berkeley Law. Her research examines immigration adjudication, administrative law, federal courts, and refugee protection using mixed methods, including administrative data analysis, doctrinal analysis, and qualitative interviews. Her dissertation studies how legal rules, executive power, and judicial review shape asylum and immigration-court outcomes. At the D-Lab, she is especially interested in supporting empirical legal research, public-law data projects, and...