Evolutionary Hierarchical Dirichlet Process for Timeline Summarization Jiwei Li author Sujian Li author 2013-08 text Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Hinrich Schuetze editor Pascale Fung editor Massimo Poesio editor Association for Computational Linguistics Sofia, Bulgaria conference publication li-li-2013-evolutionary https://aclanthology.org/P13-2099/ 2013-08 556 560