Improving Maximum Margin Matrix Factorization

author: Alexandros Karatzoglou, INSA of Rouen
author: Markus Weimer, Microsoft
author: Alex Smola, Amazon
published: Oct. 10, 2008,   recorded: September 2008,   views: 6845

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Collaborative filtering is a popular method for personalizing product recommendations. Maximum Margin Matrix Factorization (MMMF) has been proposed as one successful learning approach to this task and has been recently extended to structured ranking losses. In this paper we discuss a number of extensions to MMMF by introducing offset terms, item dependent regularization and a graph kernel on the recommender graph. We show equivalence between graph kernels and the recent MMMF extensions by Mnih and Salakhutdinov. Experimental evaluation of the introduced extensions showimproved performance over the original MMMF formulation.

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