Algorithmic Learning Theory 12th International Conference, ALT 2001, Washington, DC, USA, November 25-28, 2001. Proceedings. - Abe, Naoki; Abe, Naoki; Khardon, Roni; Khardon, Roni; Zeugmann, Thomas; Zeugmann, Thomas (Springer Berlin Heidelberg : Imprint: Springer, 2001)