Frank Hutter Holger H. Hoos Kevin Leyton-Brown Kevin P. Murphy An experimental investigation of model-based parameter optimisation: SPO and beyond. 271-278 2009 GECCO http://doi.acm.org/10.1145/1569901.1569940 conf/gecco/2009g db/conf/gecco/gecco2009.html#HutterHLM09