Prior to joining NTU, he was a scientist and Lab Head of text analytics with the Data Analytics Department, Institute for Infocomm Research, A*STAR, Singapore. He received his Ph.D. degree in computer science from the Hong Kong University of Science and Technology (HKUST) in 2010. His current research interests include transfer learning, deep reinforcement learning, distributed machine learning, and their applications to wireless sensor networks, text mining, sentiment analysis, software engineering, computer vision, etc.