@article{11:13,author={Jarkko Venna and Jaakko Peltonen and Kristian Nybo and Helena Aidos and Samuel Kaski}, Title={Information Retrieval Perspective to Nonlinear Dimensionality Reduction for Data Visualization},journal={Journal of Machine Learning Research},volume={11}, url={http://www.jmlr.org/papers/volume11/venna10a/venna10a.pdf}}