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Buyun Liang

Buyun Liang

PhD, CIS

Buyun Liang is a Ph.D. student in the Department of Computer and Information Science at the University of Pennsylvania, advised by Prof. René Vidal. His research interests span Trustworthy AI, Large Language Models, Optimization for AI, and AI for Science. Prior to joining Penn, he earned an M.S. in Computer Science (2023) at the University of Minnesota, Twin Cities, advised by Prof. Ju Sun; an M.S. in Materials Science (2020) at the University of Minnesota, Twin Cities, advised by Prof. J. Ilja Siepmann; and a B.S. in Physics (2018) from Nanjing University.

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Simple Rephrases Can Confuse Large Language Models

February 16, 2026


René Vidal

Rachleff University Professor - Radiology, Perelman School of Medicine; ESE, Penn Engineering


Buyun Liang