Mini-Bio

I am a Senior Researcher at Microsoft Research Cambridge. Since 2008, Thore Graepel and I are heading the Online Services and Advertising group. From 2006 - 2008, both of us were leading the Applied Games group. From 2000 - 2003, I was a Research Fellow of the Darwin College Cambridge. Before that, I worked at the Technical University Berlin as a teaching assistant where I obtained both my diploma degree and Ph.D. degree.

My research focuses around

I am one of the inventors of Drivatars™ in Forza Motorsport and the TrueSkill™ ranking and matchmaking system in Xbox 360 Live.

Latest Publications

Yoram Bachrach, Ralf Herbrich, and Ely Porat, Sketching Algorithms For Approximating Rank Correlations In Collaborative Filtering Systems, in SPIRE 2009, 2009
Anton Schwaighofer, Joaquin Quinonero Candela, Thomas Borchert, Thore Graepel, and Ralf Herbrich, Scalable Clustering and Keyword Suggestion for Online Advertisements, in Proceedings of ADKDD 2009: 3rd Annual International Workshop on Data Mining and Audience Intelligence for Advertising, Association for Computing Machinery, Inc., 2009
David Stern, Ralf Herbrich, and Thore Graepel, Matchbox: Large Scale Bayesian Recommendations, in Proceedings of the 18th International World Wide Web Conference, 2009
Pierre Dangauthier, Ralf Herbrich, Tom Minka, and Thore Graepel, TrueSkill Through Time: Revisiting the History of Chess, in Advances in Neural Information Processing Systems 20, MIT Press, 2008
Ralf Herbrich, Thore Graepel, and Brendan Murphy, Structure from Failure, in Second Workshop on Tackling Computer Systems Problems with Machine Learning Techniques (SysML07) , USENIX, June 2007

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