Chrysovalantis Giorgos Kontoulis author Eirini Papagiannopoulou author Grigorios Tsoumakas author 2021-06 text Iz Beltagy editor Arman Cohan editor Guy Feigenblat editor Dayne Freitag editor Tirthankar Ghosal editor Keith Hall editor Drahomira Herrmannova editor Petr Knoth editor Kyle Lo editor Philipp Mayr editor Robert M Patton editor Michal Shmueli-Scheuer editor Anita de Waard editor Kuansan Wang editor Lucy Lu Wang editor Association for Computational Linguistics Online conference publication kontoulis-etal-2021-keyphrase 10.18653/v1/2021.sdp-1.6 https://aclanthology.org/2021.sdp-1.6/ 2021-06 49 55