Photo of Sarah Rajtmajer


Assistant Professor
E369 Westgate Building
University Park, PA 16802
Additional Title(s)
Research Associate, Rock Ethics Institute
Associate Director, Center for Artificial Intelligence Foundations and Scientific Applications
Affiliate Faculty, Center for Socially Responsible Artificial Intelligence
Affiliate Faculty, Center for Social Data Analytics

Sarah Rajtmajer is an assistant professor in the College of Information Sciences and Technology and research associate in the Rock Ethics Institute at Penn State. Her research integrates machine learning, AI and hybrid human-AI systems to understand how information encodes values like accuracy, objectivity, and privacy, and the trade-offs involved in managing healthy information ecosystems.
Before joining the Penn State faculty, she served as a consultant to the Defense and Intelligence communities on scientific programs for national security, with specific focus on initiatives in big data and computational social science. Prior to her work in consulting, Dr. Rajtmajer was an Intelligence Community Postdoctoral Research Fellow at the Applied Research Laboratory and a Postdoctoral Scholar in the Department of Mathematics at Penn State. Dr. Rajtmajer has a PhD in Mathematics from the University of Zagreb, Croatia, and a BA in Mathematics from Columbia University.

Research Keywords
Machine Learning and AI
Privacy and Security
Science of Science