I am a postdoc at the Online Services and Advertising group at Microsoft Research Cambridge. I work on online evaluation and online learning to rank for information retrieval. This means that I try to understand how we can apply machine learning to directly adapt to users, by trying out new solutions and interpreting users' feedback as a noisy reinforcement signal.
Before joining Microsoft Research, I completed my PhD in the ILPS group at the University of Amsterdam, under the supervision of Maarten de Rijke and Shimon Whiteson. My thesis on Fast and Reliable Online Learning to Rank in Information Retrieval can be downloaded from my personal homepage.
- Bhaskar Mitra, Milad Shokouhi, Filip Radlinski, and Katja Hofmann, On User Interactions with Query Auto-Completion, in Proceedings of the ACM International Conference on Research and Development in Information Retrieval (SIGIR), ACM, July 2014
- Katja Hofmann, Anne Schuth, Alejandro Bellogin, and Maarten de Rijke, Effects of Position Bias on Click-Based Recommender Evaluation, in 36th European Conference on Information Retrieval (ECIR'14), Springer, 2014
- A. Schuth, K. Hofmann, S. Whiteson, and M. de Rijke, Lerot: An online learning to rank framework, in Living Lab'13: Workshop on Living Labs for Information Retrieval Evaluation, ACM, 2013