JParaCrawl: A Large Scale Web-Based English-Japanese Parallel Corpus
Table 3: Number of sentences and words on English side in training sets. The original version of ASPEC contains 3.0 million sentences, but we used only the first 2.0 million sentences for training based on previous work [Neubig2014].
['[BOLD] Data', '[BOLD] # sentences', '[BOLD] # words']
For comparison, we trained NMT models with domain-specific bitexts. Since the sentences in ASPEC are ordered by their alignment confidence scores, the former sentences tended to be clean and the latter might contain noisy sentence pairs.