Vincent Simonet is Software Engineer at Google Paris since 2011. He his leading a project aiming at understanding YouTube contents in order to ease its promotion and discovery on YouTube, using techniques like semantic annotations, data mining, machine learning and video content analysis. He is a former student of the École normale supérieure (Paris, France) in Computer Science and Mathematics. He made a PhD at INRIA and defended it in 2004. From 2004 to 2011, he worked at AREVA, and was responsible for system and software of safety critical systems of nuclear power plants.