@inproceedings{onvalidoptimalassignmentkernelsand,
  title = {On Valid Optimal Assignment Kernels and Applications to Graph Classification},
  author = {Nils M. Kriege and Pierre-Louis Giscard and Richard C. Wilson},
  year = {2016},
  booktitle = {NeurIPS 2016 12},
  eprint = {1606.01141},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1606.01141v3},
}