Translating Pro-Drop Languages with Reconstruction Models
Table 8: Translation results when hidden states are reconstructed into the original source sentence instead of the source sentence labelled with DPs.
['[BOLD] Model', '[BOLD] Test', '△']
Note that the variant “+ dec-rec” in this setting is exactly the model proposed by \citeauthortu2017neural \shortcitetu2017neural. As seen, although the variants significantly outperforms “Baseline” model without using any DP information, the absolute improvements are still worse than our proposed model that explicitly exploits DP information (i.e., 1.45 vs. 3.28). This validates our hypothesis that explicitly modeling DP translation contributes most to the improvement.