Lingua Custodia at WMT’19: Attempts to Control Terminology
Table 4: BLEU scores for German-to-French systems fine-tuned on backtranslated data
['[EMPTY]', 'Euelections-dev-2019', 'Newstest-2013', 'Newstest-2019']
Both backtranslation setups provide the best improvements we observed on Newstest-2019 ( +2.5). However, we see no significant difference between the constrained and unconstrained setups. This could be expected, since our experiment was focused on a small set of terms we wished the systems to generate, which can only lead to local improvements with low impact on the BLEU score. The ensemble of 8 models combining both setups is our primary submission to the shared task.