Andrew Barto is Professor Emeritus of Computer Science, University of Massachusetts, Amherst, having retired in 2012. He served as Chair of the UMass Department of Computer Science from 2007 to 2011. He received his B.S. with distinction in mathematics from the University of Michigan in 1970, and his Ph.D. in Computer Science in 1975, also from the University of Michigan. He joined the Computer Science Department of the University of Massachusetts Amherst in 1977 as a Postdoctoral Research Associate, became an Associate Professor in 1982, and a Full Professor in 1991. Before retiring he co-directed the Autonomous Learning Laboratory at UMass Amherst. He is currently an Associate Member of the Neuroscience and Behavior Program of the University of Massachusetts. He serves as an associate editor of Neural Computation, as a member of the Advisory Board of the Journal of Machine Learning Research, and as a member of the editorial board of Adaptive Behavior. Professor Barto is a Fellow of the American Association for the Advancement of Science, a Fellow and Senior Member of the IEEE, and a member of the Society for Neuroscience. He received the 2004 IEEE Neural Network Society Pioneer Award for contributions to the field of reinforcement learning, and the IJCAI-17 Award for Research Excellence for groundbreaking and impactful research in both the theory and application of reinforcement learning. He has published over one hundred papers or chapters in journals, books, and conference and workshop proceedings. He is co-author with Richard Sutton of the book "Reinforcement Learning: An Introduction," MIT Press 1998, which has so far received over 25,000 citations. The second edition of this book will be published soon.