DualSum: a Topic-Model based approach for update summarization Jean-Yves Delort author Enrique Alfonseca author 2012-04 text Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics Walter Daelemans editor Association for Computational Linguistics Avignon, France conference publication delort-alfonseca-2012-dualsum https://aclanthology.org/E12-1022/ 2012-04 214 223