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stat.ML2021★ 8 cited
Nonuniform Negative Sampling and Log Odds Correction with Rare Events Data
HaiYing Wang, Aonan Zhang, Chong Wang
We investigate the issue of parameter estimation with nonuniform negative sampling for imbalanced data. We first prove that, with imbalanced data, the available information about u…
stat.ML2013★ 4 cited
A Nested HDP for Hierarchical Topic Models
John Paisley, Chong Wang, David Blei +1
We develop a nested hierarchical Dirichlet process (nHDP) for hierarchical topic modeling. The nHDP is a generalization of the nested Chinese restaurant process (nCRP) that allows…
stat.ML2012★ 1 cited
Variational Inference in Nonconjugate Models
Chong Wang, David M. Blei
Mean-field variational methods are widely used for approximate posterior inference in many probabilistic models. In a typical application, mean-field methods approximately compute…