Computational Learning Theory 14th Annual Conference on Computational Learning Theory, COLT 2001 and 5th European Conference on Computational Learning Theory, EuroCOLT 2001, Amsterdam, The Netherlands, July 16-19, 2001, Proceedings - Helmbold, David; Helmbold, David; Williamson, Bob; Williamson, Bob (Springer Berlin Heidelberg : Imprint: Springer, 2001)