no code implementations • 22 Aug 2018 • Murat Ali Bayir, Mingsen Xu, Yaojia Zhu, Yifan Shi
In this paper, we propose an offline counterfactual policy estimation framework called Genie to optimize Sponsored Search Marketplace.
no code implementations • 28 Mar 2013 • Yaojia Zhu, Xiaoran Yan, Lise Getoor, Cristopher Moore
The resulting model has the advantage that its parameters, including the mixture of topics of each document and the resulting overlapping communities, can be inferred with a simple and scalable expectation-maximization algorithm.
no code implementations • 17 Jul 2012 • Xiaoran Yan, Cosma Rohilla Shalizi, Jacob E. Jensen, Florent Krzakala, Cristopher Moore, Lenka Zdeborova, Pan Zhang, Yaojia Zhu
We present the first principled and tractable approach to model selection between standard and degree-corrected block models, based on new large-graph asymptotics for the distribution of log-likelihood ratios under the stochastic block model, finding substantial departures from classical results for sparse graphs.