@incollection{NIPS2012_1289,
 title ={Learning Label Trees for Probabilistic Modelling of Implicit Feedback},
 author={Andriy Mnih and Yee Whye Teh},
 booktitle = {Advances in Neural Information Processing Systems 25},
 editor = {P. Bartlett and F.C.N. Pereira and C.J.C. Burges and L. Bottou and K.Q. Weinberger},
 pages = {2825--2833},
 year = {2012},
}