HighRES: Highlight-based Reference-less Evaluation of Summarization Hardy Hardy author Shashi Narayan author Andreas Vlachos author 2019-07 text Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics Anna Korhonen editor David Traum editor Lluís Màrquez editor Association for Computational Linguistics Florence, Italy conference publication hardy-etal-2019-highres 10.18653/v1/P19-1330 https://aclanthology.org/P19-1330/ 2019-07 3381 3392