I am an assistant professor in the Department of Computer Science and Engineering at the Ohio State University (OSU). Prior to that, I spent half a year at the University of Washington as a visiting scientist, after landing a Ph.D in Computer Science from UC Santa Barbara in 2015. I am looking for highly motivated students. Please feel free to reach out if you are interested. Research Interests My research interests lie in data mining, and machine learning with emphasis on text mining and understanding, network analysis, and human behavior understanding. Particularly, my research projects focus on: (1) Machine intelligent question answering (QA) based on various sources, such as knowledge bases, texts, and tables; (2) Human collaborative QA: expert behavior understanding and expertise mining; (3) Knowledge discovery from texts and networks.