Fabrizio (@fabreetseo) is currently a software engineer at Facebook working in the search team on topics related to query log mining. Prior to Facebook, Fabrizio was a principal scientist at Yahoo where he has worked on sponsored search and native ads within the Gemini project. Fabrizio holds a Ph.D. in Computer Science from the University of Pisa, Italy where he studied problems related to Web Information Retrieval with particular focus on Efficiency related problems like Caching, Collection Partitioning, and Distributed IR in general. He has been the recipient (together with Ranieri Baraglia) of the best Web Intelligence 2004 paper award, and the recipient of the ECIR 06 best paper award. In 2014 he has been a recipient of the best paper award at the internal Yahoo conference: Tech Pulse. He is the author of more than 130 papers and he has patents filed in the area of web advertising.