Latent Topic Refinement based on Distance Metric Learning and Semantics-assisted Non-negative Matrix Factorization Tran-Binh Dang author Ha-Thanh Nguyen author Le-Minh Nguyen author 2020-10 text Proceedings of the 34th Pacific Asia Conference on Language, Information and Computation Minh Le Nguyen editor Mai Chi Luong editor Sanghoun Song editor Association for Computational Linguistics Hanoi, Vietnam conference publication dang-etal-2020-latent https://aclanthology.org/2020.paclic-1.8/ 2020-10 70 75