@incollection{NIPS2008_0994,
	Author = {{\" O}zg{\" u}r {\c S}im{\c s}ek and Andrew G. Barto},
	Booktitle = {Advances in Neural Information Processing Systems 21},
	Editor = {D. Koller and D. Schuurmans and Y. Bengio and L. Bottou},
	Pages = {1497--1504},
	Title = {Skill Characterization Based on Betweenness},
	Year = {2009}}