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Tagging plays an important role in many recent websites. Recommender systems can help to suggest a user the tags he might want to use for tagging a specific item. Factorization models based on the Tucker Decomposition (TD) model have been shown to provide high quality tag recommendations outperforming other approaches like PageRank, FolkRank, collaborative filtering, etc. The problem with TD models is the cubic core tensor resulting in a cubic runtime in the factorization dimension fordoi:10.1145/1718487.1718498 dblp:conf/wsdm/RendleS10 fatcat:d7mxgafyrbbqvdkiuq66zvdj5i