A Privacy-Aware Bayesian Approach for Combining Classifier and Cluster   Ensembles
  This paper introduces a privacy-aware Bayesian approach that combines ensembles of classifiers and clusterers to perform semi-supervised and transductive learning. We consider scenarios where instances and their classification/clustering results are distributed across different data sites and have sharing restrictions. As a special case, the privacy aware computation of the model when instances of the target data are distributed across different data sites, is also discussed. Experimental results show that the proposed approach can provide good classification accuracies while adhering to the data/model sharing constraints. 
Ayan Acharya, Eduardo R. Hruschka, Joydeep Ghosh
cs.LG cs.CV stat.ML