Automatic Translating Between Ancient Chinese and Contemporary Chinese with Limited Aligned Corpora
Table 4: Evaluation result (BLEU) of translating between An (ancient) and Con (contemporary) Chinese with different number of training samples.
['[BOLD] Language', '5,000', '10,000', '20,000', '53,140']
Therefore, our unsupervised method of building a large sentence-aligned corpus is necessary. If we do not build a large sentence-aligned corpus by our sentence alignment algorithm, we will only have limited sentence-aligned corpora and the performance of translating will be worse.