Collective Cross-Document Relation Extraction Without Labelled Data Limin Yao author Sebastian Riedel author Andrew McCallum 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 yao-etal-2010-collective https://aclanthology.org/D10-1099/ 2010-10 1013 1023