What do Neural Machine Translation Models Learn about Morphology?
Table 6: Impact of changing the target language on POS tagging accuracy. Self = German/Czech in rows 1/2 respectively.
['SourceTarget', 'English', 'Arabic', 'Self']
We report here results that were omitted from the paper due to the space limit. As noted in the paper, all the results consistently show that i) layer 1 performs better than layers 0 and 2; and ii) char-based representations are better than word-based for learning morphology.