IST-Unbabel Participation in the WMT20 Quality Estimation Shared Task
João Martinho Moura, Miguel Ángel Vera, Daan van Stigt, Fábio Kepler, André F. T. Martins · 2020
We present the joint contribution of IST and Unbabel to the WMT 2020 Shared Task on Quality Estimation.Our team participated on all tracks (Direct Assessment, Post-Editing Effort, Document-Level), encompassing a total of 14 submissions.Our submitted systems were developed by extending the OpenKiwi framework to a transformer-based predictorestimator architecture, and to cope with glassbox, uncertainty-based features coming from neural machine translation systems.