Papers › Trained MT Metrics Learn to Cope with Machine-translated References
Trained MT Metrics Learn to Cope with Machine-translated References
Jannis Vamvas, Tobias Domhan, Sony Trenous, Rico Sennrich, Eva Hasler
Neural metrics trained on human evaluations of MT tend to correlate well with human judgments, but their behavior is not fully understood. In this paper, we perform a controlled experiment and compare a baseline metric that has not been trained on human evaluations (Prism) to a trained version of the same metric (Prism+FT). Surprisingly, we find that Prism+FT becomes more robust to machine-translated references, which are a notorious problem in MT evaluation. This suggests that the effects of metric training go beyond the intended effect of improving overall correlation with human judgments.
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