document: Multiple domain user personalization Content personalization is a key tool in creating attractive websites . Synergies can be obtained by integrating personalization between several Internet properties . In this paper we propose a hierarchical Bayesian model to address these issues . Our model allows the integration of multiple properties without changing the overall structure , which makes it easily extensible across large Internet portals . It relies at its lowest level on Latent Dirichlet Allocation , while making use of latent side features for cross-property integration . We demonstrate the efficiency of our approach by analyzing data from several properties of a major Internet portal .
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