I am a Professor of Information and Computer Science at the University of Michigan. My work is at the boundary of HCI and AI. A lot of what I do is thinking about how AI can be integrated into user-facing interfaces. This has led me to work on human-centered AI, search, learning, visualization, programming, and creativity support. I also maintain a strong interest in large-scale behavioral modeling including: social network analysis, meme and rumor spread, and temporal informatics (how the text and other data evolves over time).

Before grad school I was a researcher at HP Labs's Information Dynamics Group and at Xerox PARC. I am a Fellow of the ACM and one of the founders of ICWSM (which I have chaired multiple times). I have also been Co-General Chair for WSDM and Co-Program Chair for UIST. Work in my group is sponsored by the NSF, IARPA, NIH, the Education Department, Adobe, Microsoft, Facebook, Google, and Yahoo.