Professor, Dept. of Computer Science, University of Massachusetts, Amherst, MA — Researcher in Artificial Intelligence, in particular Machine Learning and Reinforcement Learning. He has been Area Chair for AAAI confernces, and Senior PC member for IJCAI and ICML conferences, as well as serving in editorial capacity for the journals Machine Learning, Journal of Artificial Intelligence Research, and Journal of Machine Learning Research. He received best paper honorable mention at the 16th Int. Conf. on Machine Learning.