Robust player imitation using multiobjective evolution. - Niels van Hoorn; Julian Togelius; Daan Wierstra; Jürgen Schmidhuber (IEEE Congress on Evolutionary Computation, 2009)

Hierarchical controller learning in a First-Person Shooter. - Niels van Hoorn; Julian Togelius; Jürgen Schmidhuber (CIG, 2009)