Promoting the Knowledge of Source Syntax in Transformer NMT Is Not Needed
Table 8: DiagonalParse’s results in translation (BLEU) and diagonal parsing (precision) on cs2en. All test BLEU improvements are statistically significant with p<0.01 when compared to the TransformerBase.
['[EMPTY]', '[BOLD] BLEU  [BOLD] Dev', '[BOLD] BLEU  [BOLD] Test', '[BOLD] Precision  [BOLD] Dev', '[BOLD] Precision  [BOLD] Test']
The diagonal parsing precision is, as expected, very high, ranging from 99.95% to 99.99% on the test set. This joint model also outperformed the baseline in translation task with all its variants (BLEU scores vary from 37.47 to 38.14, compared to 36.66).