@InProceedings{liu-wang:2015:ACL-IJCNLP,
  author    = {Liu, Kai  and  Wang, Hua},
  title     = {Robust Multi-Relational Clustering via $\ell\_1$-Norm Symmetric Nonnegative Matrix Factorization},
  booktitle = {Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 2: Short Papers)},
  month     = {July},
  year      = {2015},
  address   = {Beijing, China},
  publisher = {Association for Computational Linguistics},
  pages     = {397--401},
  url       = {http://www.aclweb.org/anthology/P15-2065}
}