Robust Multi-Relational Clustering via \ell₁-Norm Symmetric Nonnegative Matrix Factorization Kai Liu author Hua Wang author 2015-07 text 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) Chengqing Zong editor Michael Strube editor Association for Computational Linguistics Beijing, China conference publication liu-wang-2015-robust 10.3115/v1/P15-2065 https://aclanthology.org/P15-2065/ 2015-07 397 401