Avihai Mejer is a Principal Research Engineer at Yahoo Research, in the Search, Text and Social Mining group, where he engages in activities such as relevance ranking, query intent classification, and automatic language generation. Avihai received his B.Sc from the Dept. of Electrical Engineering and M.Sc from the Dept. of Computer Science, Technion - Israel Institute of Technology, where he conducted research under the supervision of Prof. Koby Crammer in the field of Natural Language Processing and Machine Learning. Avihai has several publications in the areas of Natural Language Processing and Information Retrieval in leading conferences including WWW, CIKM, SIGIR, NAACL and EMNLP.