Nikolaos PanagiarisEmma HartDimitra GkatziaImproving the Naturalness and Diversity of Referring Expression Generation models using Minimum Risk Training.41-512020INLGhttps://doi.org/10.18653/v1/2020.inlg-1.7https://aclanthology.org/2020.inlg-1.7/conf/inlg/2020db/conf/inlg/inlg2020.html#PanagiarisHG20