MDI Fellows

MDI is pleased to host a group of postdoctoral and policy fellows each academic year. Fellowships are advanced scholarly appointments for one or more academic years. Fellows engage in advanced independent and/or directed research with colleagues at the Massive Data Institute. In addition, fellows lead or participate in several data-oriented workshops and academic conferences at Georgetown and at partner institutions. As junior scholars in their field, fellows contribute to the intellectual life of the McCourt School and help build relationships across disciplines and departments within the University.

Current Fellows

Melissa Collier, Ph.D. – Postdoctoral Fellow

Dr. Melissa Collier is a Postdoctoral Fellow in Shweta Bansal’s Lab, where she develops and applies quantitative tools to understand how behavior shapes disease transmission and evolution in wildlife. Her work integrates contact networks, mathematical modeling, and meta-analyses of social structures to reveal how contact and animal movement influence pathogen dynamics. She also manages the Animal Social Network Repository, a growing global database of wildlife contact networks designed to enable large-scale comparative analyses.

Melissa earned her Ph.D. in Biology from Georgetown University in 2023, where she investigated the spread of disease in Tamanend’s bottlenose dolphins that visit the Potomac–Chesapeake region. While her research is grounded in computational and analytical methods, she also conducts targeted field studies with our local dolphins to collect high-resolution behavioral data that inform and validate her models. Her current work, funded by the Morris Animal Foundation, examines how climate change may alter pathogen transmission in dolphin populations and explores machine learning strategies for more effective disease monitoring in marine mammals.

explore her work here

Rupayan Mallick, Ph.D. – Postdoctoral Fellow

Dr. Rupayan Mallick is a Postdoctoral Fellow at the Massive Data Institute at the McCourt School of Public Policy and the Department of Computer Science. His research interests include Generative AI, Explainable AI, and Multimodal Learning. He is currently exploring the generative models of deep learning such as diffusion models for different data modalities. Dr. Mallick completed his Ph.D. from University of Bordeaux (LaBRI and INRIA), France in Computer Science specializing in Explainable Deep Learning.

explore his work here

Stephanie Straus, M.Ed. – Policy Fellow

Stephanie Straus facilitates the linking of previously un-linked datasets to inform pressing policy issues across education, public health, and the civil justice system. Stephanie also advocates for secure data governance models that address the legal and regulatory risks involved with data sharing.

explore her work here

Lucy Qin, Ph.D. – Postdoctoral Fellow

Lucy Qin, Ph.D. is a Postdoctoral Associate and Fritz Fellow. Broadly, her background is in applied cryptography and usable security/privacy. She recently completed her PhD in Computer Science at Brown University where the focus of her thesis was on designing novel cryptographic protocols in support of public policy use cases. At Georgetown, she will be working on projects related to privacy issues and the collection/use of genetic data. She will also be continuing prior work with Elissa Redmiles on deterring image-based sexual abuse.

explore her work here

Eric Zeng, Ph.D. – Postdoctoral Fellow

Dr. Eric Zeng is a Postdoctoral Associate at the Massive Data Institute at the McCourt School of Public Policy. His research interests include usable security and privacy, consumer protection, and measuring harms to users on online platforms. He completed a PhD in Computer Science & Engineering at the University of Washington, and recently worked as a postdoctoral researcher at Carnegie Mellon University CyLab. At MDI, his research will investigate the impacts of online advertising algorithms on user experience, and the spread of harmful AI-generated content on online platforms.

explore his work here

Le Bao, Ph.D. — MDI Post Doctoral Fellow 2022-2024

James Carey, J.D. — MDI Justice Fellow 2022-2025

Christopher Dick

Jaren Haber

Elizabeth Jacobs

Helge-Johannes Marahrens, Ph.D. — MDI Post Doctoral Fellow 2023-2025

J.J. Naddeo

Sejin Paik, Ph.D. — MDI Post Doctoral Fellow 2024-2025

Agoritsa Polyzou

Garrett Quenneville

Joseph Shaheen

Laila Wahedi

Brandon Waldon — MDI Post Doctoral Fellow 2024-2025; Fritz Fellow 2024-2025

Yifang Wei

Nathan Wycoff, Ph.D. — Data Science Fellow 2023-2024; MDI Post Doctoral Fellow 2023-2021