Deepak Agarwal Bee-Chung Chen Pradheep Elango Nitin Motgi Seung-Taek Park Raghu Ramakrishnan Scott Roy Joe Zachariah Online Models for Content Optimization. 17-24 2008 NIPS http://books.nips.cc/papers/files/nips21/NIPS2008_0916.pdf conf/nips/2008 db/conf/nips/nips2008.html#AgarwalCEMPRRZ08