The most recent paper on The Liu & Schubert agent: Toward self-motivated, cognitive, continually planning agents, Computational Intelligence, Volume 31, Number 3, 2015. SEE THE FULL PAPER AT http://onlinelibrary.wiley.com/doi/10.1111/coin.12029/pdf Copies of Liu's defense slides were supplied. Additional information: the overviews of the Gridworld infrastructure, sample operators and README files (from http://www.cs.rochester.edu/~schubert/191-291/gridworld-code.shtml).