I am a research scientist at Yahoo Labs in New York City. My research interests are machine learning, algorithms, game theory and combinatorics. Curriculum Vitae from 2016. September 2011–September 2014, I was a software engineer at Google in New York City. July 2009–June 2011, I was a post-doctoral fellow at AICML at Department of Computing Science at University of Alberta, Canada under supervision of Csaba Szepesvári. In May 2009, I finished my PhD from School of Computer Science at University of Waterloo in Canada. My advisor was Shai Ben-David. I did my undergrad at Faculty of Mathematics, Physics and Informatics at Comenius University in Bratislava, Slovakia. My undergrad thesis advisor was Martin Škoviera. At Comenius University, I also organized Internet Problem Solving Contest, and local math and programming contests and olympiads for high school students. My wife Lucia and my brother Martin are also computer scientists.