Welcome! My name is Andreas Charalampopoulos. I’m a second-year PhD student in Operations Research in the Department of Industrial Engineering and Operations Research (IEOR) at Columbia University, advised by Prof. Christian Kroer. My research focuses on problems at the intersection of game theory, optimization, and artificial intelligence. I completed my undergraduate degree in electrical and computer engineering at the National Technical University of Athens, where I was advised by Dimitris Fotakis.

News

• September 2026: Our paper, “Repeated Descent: A Framework for Online Budget-Feasible Auctions,” was accepted to WINE 2026.

• May 2026: Our paper, “Repeated Descent: A Framework for Online Budget-Feasible Auctions,” is available on arXiv.

• May 2025: Our paper, “A competitive posted-price mechanism for online budget-feasible auctions,” was accepted to EC 2025.