@inproceedings{simsek-barto:icml-04,
	Author = {{\" O}zg{\" u}r {\c S}im{\c s}ek and Andrew G. Barto},
	Booktitle = {Proceedings of the Twenty-First International Conference on Machine Learning},
	Location = {Banff, Alberta, Canada},
	Publisher = {ACM Press},
	Title = {Using relative novelty to identify useful temporal abstractions in reinforcement learning},
  	pages={751--758},
  	Year = {2004}}