Nicolò Cesa-Bianchi Alex Conconi Claudio Gentile Learning Probabilistic Linear-Threshold Classifiers via Selective Sampling. 373-387 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2777&spage=373 2003 conf/colt/2003 COLT db/conf/colt/colt2003.html#Cesa-BianchiCG03