Word centrality constrained representation for keyphrase extraction Zelalem Gero author Joyce Ho author 2021-06 text Proceedings of the 20th Workshop on Biomedical Language Processing Dina Demner-Fushman editor Kevin Bretonnel Cohen editor Sophia Ananiadou editor Junichi Tsujii editor Association for Computational Linguistics Online conference publication gero-ho-2021-word 10.18653/v1/2021.bionlp-1.17 https://aclanthology.org/2021.bionlp-1.17/ 2021-06 155 161