Human-competitive tagging using automatic keyphrase extraction Olena Medelyan author Eibe Frank author Ian H Witten author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication medelyan-etal-2009-human https://aclanthology.org/D09-1137/ 2009-08 1318 1327