pke: an open source python-based keyphrase extraction toolkit Florian Boudin author 2016-12 text Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: System Demonstrations Hideo Watanabe editor The COLING 2016 Organizing Committee Osaka, Japan conference publication boudin-2016-pke https://aclanthology.org/C16-2015/ 2016-12 69 73