I got my Ph.D in Computer Science at the Center for Intelligent Information Retrieval (CIIR) , College of Information and Computer Sciences, University of Massachusetts Amherst under the supervision of Prof. W. Bruce Croft. My research areas include information retrieval, natural language processing, text mining and machine learning. I have published more than 30 papers in top conferences such as WWW, SIGIR, ACL, ICML, CIKM, WSDM, ICDM and NAACL. Moreover, I have served as the SPC/PC member for top conferences including KDD, ACL, SIGIR, WWW, AAAI, EMNLP, WSDM and CIKM. I'm now focusing on research on deep learning, text matching, question answering, neural conversational models, search, ranking and relevance, learning to rank, statistical language models, probabilistic graphical models and user modeling/profiling. For a full list of my publications see my personal page .