Scaling up CometKiwi: Unbabel-IST 2023 Submission for the Quality Estimation Shared Task Ricardo Rei author Nuno M Guerreiro author José Pombal author Daan van Stigt author Marcos Treviso author Luisa Coheur author José G C. de Souza author André F T Martins author 2023-12 text Proceedings of the Eighth Conference on Machine Translation Philipp Koehn editor Barry Haddow editor Tom Kocmi editor Christof Monz editor Association for Computational Linguistics Singapore conference publication rei-etal-2023-scaling 10.18653/v1/2023.wmt-1.73 https://aclanthology.org/2023.wmt-1.73/ 2023-12 841 848