@article{10:22,author={Gbor Takcs and Istvn Pilszy and Bottyn Nmeth and Domonkos Tikk}, Title={Scalable Collaborative Filtering Approaches for Large Recommender Systems(Special Topic on Mining and Learning with Graphs and Relations)},journal={Journal of Machine Learning Research},volume={10}, url={http://www.jmlr.org/papers/volume10/takacs09a/takacs09a.pdf}}