David Carmel is a principal applied scientist at Amazon, Israel, working on applying search technologies for Alexa shopping. Before that he worked at Yahoo lab, Haifa, Israel, which he joined in March 2013. Prior to this David worked as a research staff member at the Information Retrieval group at IBM Haifa Research Lab. David’s research is focused on query performance prediction, social search, and text mining. For several years David taught the Introduction to IR course at the CS department at Haifa University.