Geometrical Approaches to Active Learning. - Kamil Adiloglu; Robert Anniés; Falk-Florian Henrich; André Paus; Klaus Obermayer (SJTU-TUB Joint Workshop, 2008)

Active Learning by Spherical Subdivision. - Falk-Florian Henrich; Klaus Obermayer (J. Mach. Learn. Res., 2008)