1. School of Computer Science, McGill University, Montréal, QC H3A 0E9, Canada
2. Montreal Institute for Learning Algorithms (MILA), Montréal, QC H2S 3H1, Canada
3. Structural Bioinformatics Unit, Department of Structural Biology and Chemistry, Institut Pasteur, CNRS UMR3528, C3BI, USR3756, Paris, France
4. Mines ParisTech, Paris-Sciences-et-Lettres Research University, Center for Computational Biology, Paris 75272, France
5. Department of Physics, McGill University, Montréal, QC H3A 2T8, Canada