Ricardo Baeza-Yates is CTO of NTENT, and Director of Data Science at Northeastern University, Silicon Valley campus. He was Vice President of Research at Yahoo Labs, first in Barcelona and then in Sunnyvale, California (2006-2016). Between 2008 and 2012 he also supervised Yahoo Labs Haifa and between 2012 and 2015 was in charge of Yahoo Labs London. Until 2005 he was director of the Web Research Center in the Department of Computer Science of the School of Engineering of the University of Chile; and ICREA professor and founder of the Group of Science of the Web and Social Computing in the Department of Information and Communication Technologies of the Pompeu Fabra University in Barcelona, Spain. He maintains links with both universities as a part-time professor.