Staying Informed: Supervised and Semi-Supervised Multi-View Topical Analysis of Ideological Perspective Amr Ahmed author Eric Xing author 2010-10 text Proceedings of the 2010 Conference on Empirical Methods in Natural Language Processing Hang Li editor Lluís Màrquez editor Association for Computational Linguistics Cambridge, MA conference publication ahmed-xing-2010-staying https://aclanthology.org/D10-1111/ 2010-10 1140 1150