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, game theory and graph theory for applications to understand how information is shared and spread, as well as how it is manipulated and weaponized by adversaries. She studies how information encodes values like privacy, trust, and truth, 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 has worked as a design engineer at Robert Bosch LLC. Sai's research interests include machine learning and network science. His current work develops novel methodologies for understanding scholarly output and metascience.
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; co-advised by Dr. C. Lee Giles)
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 natural language processing and AI in the context of our DARPA SCORE project.
VAIBHAV SINGH (Masters student; co-advised by Dr. C. Lee Giles)
Vaibhav is a second year Masters student in Computer Science and Engineering at Penn State. He holds a Bachelor of Engineering in Information Science and Engineering from P.E.S. Institute of Technology in Bangalore. Vaibhav has extensive experience in software engineering. At Penn State, Sumit is working on design and development of synthetic prediction markets in the context of our DARPA SCORE project.
TINGTING DU (Masters student; co-advised by Dr. Anna Squicciarini)
Tingting is a second year Masters student in the College of Information Sciences and Technology at Penn State. She holds a Bachelor of Engineering in Computer Science from Sun Yat-sen University. At Penn State, Tingting is working on topics related to privacy on social media.