SARAH RAJTMAJER
ASSISTANT PROFESSOR
COLLEGE OF INFORMATION SCIENCES AND TECHNOLOGY
THE ROCK ETHICS INSTITUTE
THE PENNSYLVANIA STATE UNIVERSITY
PEOPLE
SARAH RAJTMAJER (PI)
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.
SAI DILEEP KONERU (PhD student)
Sai is a second year PhD student in the College of Information Sciences and Technology at Penn State. Prior to joining the College, Sai was a Masters students in the Department of Industrial Engineering. Sai's work is in NLP, developing novel methods to combine text and underlying network structure to understand scholarly output.
XINYU WANG (PhD student)
Xinyu (Ginny) is a second year PhD student in the College of Information Sciences and Technology at Penn State and recipient of the College's prestigious University Graduate Fellowship. She holds a Masters of Engineering from University of California at Berkeley and a Bachelors in Industrial Engineering from University of Illinois at Urbana-Champaign. Ginny's work uses machine learning to understand the role of narrative in misinformation.
TATIANA CHAKRAVORTI (PhD student)
Tatiana is a second year PhD student in the College of Information Sciences and Technology at Penn State. She holds Bachelor, Masters and Doctoral degrees in Electronics and Engineering Communication. Tatiana has prior work on machine learning applications for smart technologies and previously worked as an assistant professor at KL University in India. At Penn State, Tatiana is working on hybrid human-AI systems to evaluate information integrity.
YINGFAN ZHOU (PhD student)
Yingfan is a first year PhD student in the College of Information Sciences and Technology at Penn State. She holds a Masters of Information Science from University of Pittsburgh. Yingfan’s work constructs and applies computational methods to explore toxicity in online communities.
JIAYI LI (PhD student)
Jiayi will be joining us as a PhD student in Fall 2023! Jiayi has a Bachelor degree from Penn State's College of IST. She is interested in misinformation and social media analytics.