Mark's recent work has focused on making information retrieval evaluation more predictive of actual human search performance. Mark has been a co-organizer of two TREC tracks, a co-organizer of the SIGIR 2013 workshop on modeling user behavior for information retrieval evaluation (MUBE) and the SIGIR 2010 workshop on the simulation of interaction. He is a recipient of the SIGIR best paper award (2012) for his work with Charles Clarke on the time-based calibration of effectiveness measures. He is also a recipient of the University of Waterloo, Faculty of Engineering's Teaching Excellence Award.