Jian-Tao Sun is a researcher at Machine Learning group, Microsoft Research Asia. His current research interests include opinion mining, large-scale usage data mining, and machine learning algorithms. Dr. Sun has published more than 20 papers in referred conferences and journals. He has also closely worked together with product teams to release technologies into Microsoft products and services. So far he has more than 10 filed US/international patents or pending applications. Prior to joining Microsoft, Dr. Sun obtained his Ph.D. from the Department of Computer Science, Tsinghua University, where his research efforts were focused on text classification. He has also been a member of ACM and IEEE.