I design computational systems to help people work and learn better, together.

Here’s a rough diagram of my current research interests, taken from a recent talk. A venn diagram of my research interests. They lie at the intersection of large-scale data/AI, learning, and work.


Nov 13, 2018 I’m serving as the demos chair at CSCW 2019.

Oct 29, 2018 I gave a talk at KAIST, Korea. Juho Kim, thank you for hosting. PDF Slides

Recent publications

For each paper below, I also include some comments, and answers to frequently asked questions. You can also see this whole list on one page.


If you are interested in our work above, you should meet my wonderful graduate students: Julia Cambre, Yasmine Kotturi, and Zheng Yao (co-advised with Bob Kraut).

I also collaborate with Ariel Procaccia, Rebecca Taylor, David Yaron, and Greg Rushton.


Our research is generously sponsored by the US Office of Naval Research, the Department of Education, and the Carnegie Mellon Manufacturing Futures Initative.


Here are all my publications.

I rarely tweet.