John Langford Roberto Oliveira Bianca Zadrozny Predicting Conditional Quantiles via Reduction to Classification. 2006 conf/uai/2006 UAI http://uai.sis.pitt.edu/displayArticleDetails.jsp?mmnu=1&smnu=2&article_id=1303&proceeding_id=22 db/conf/uai/uai2006.html#LangfordOZ06