I'm Professor of AI at GISMA University of Applied Sciences in Berlin, where I direct BRAINS, the Brandenburg Research Center for Applied Intelligent Systems. This autumn I'm a visiting researcher at the Max Planck Institute for Security and Privacy in Bochum.
My research looks at how information and influence spread through social networks, and who gets left out when they do. I did my PhD at MPI-SWS on how people consume news online. Since then I've worked on fairness in influence maximization, first with greedy algorithms and now with graph neural networks and deep reinforcement learning. These days I also put LLM agents into social dilemmas on changing networks to see when they cooperate.
Selected papers
- On the Efficiency of the Information Networks in Social Media. WSDM 2016. arXiv
- Purple Feed: Identifying High Consensus News Posts on Social Media. AIES 2018. paper
- Analyzing Biases in Perception of Truth in News Stories and Their Implications for Fact Checking. FAT* 2019. paper
- CrossWalk: Fairness-Enhanced Node Representation Learning. AAAI 2022. arXiv
- On the Fairness of Time-Critical Influence Maximization in Social Networks. IEEE TKDE. arXiv
The full list is on Google Scholar.
Find me: Website · Google Scholar · LinkedIn
If you're a student looking for a thesis project, or a researcher who wants to work together, get in touch.