@article{Machado17a,

author = {Marlos C. Machado and Marc G. Bellemare and Erik Talvitie and Joel Veness and Matthew Hausknecht and Michael Bowling},
title = {{Revisiting the Arcade Learning Environment: Evaluation Protocols and Open Problems for General Agents}},
journal = {Journal of Artificial Intelligence Research (JAIR)},
volume = {61},
pages = {523--562},
year = {2018},

}