CUNI Systems for the WMT22 Czech-Ukrainian Translation Task
This addresses translation needs for Czech-Ukrainian language pairs, particularly relevant for migration contexts, but is incremental as it builds on existing methods.
The paper tackled Czech-Ukrainian machine translation for the WMT22 task, presenting systems based on back-translation and romanization, with results showing romanization had only a minor effect on quality.
We present Charles University submissions to the WMT22 General Translation Shared Task on Czech-Ukrainian and Ukrainian-Czech machine translation. We present two constrained submissions based on block back-translation and tagged back-translation and experiment with rule-based romanization of Ukrainian. Our results show that the romanization only has a minor effect on the translation quality. Further, we describe Charles Translator, a system that was developed in March 2022 as a response to the migration from Ukraine to the Czech Republic. Compared to our constrained systems, it did not use the romanization and used some proprietary data sources.