Beyond Error Propagation in Neural Machine Translation: Characteristics of Language Also Matter
Table 4: BLEU scores on En-Jp test set. ”0” represents the normal translation results, and ”1” represents the teacher-forcing translation results.
['[EMPTY]', '[BOLD] left-to-right 0', '[BOLD] left-to-right 1', '[BOLD] right-to-left 0', '[BOLD] right-to-left 1']
It can be observed that regardless of decoding direction (i.e., from left-to-right or from right-to-left) and with or without teacher forcing, the accuracy of the right half is always higher than that in the left half.