James G. Shanahan Norbert Roma Improving SVM Text Classification Performance through Threshold Adjustment. 361-372 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2837&spage=361 2003 conf/ecml/2003 ECML db/conf/ecml/ecml2003.html#ShanahanR03