Multilingual Neural Machine Translation with Language Clustering
Table 1: BLEU score of 23 languages→English with multilingual models based on different methods of language clustering: Random, Family (Language Family) and Embedding (Language Embedding).
['Language', 'Ar', 'Bg', 'Cs', 'De', 'El', 'Es', 'Fa', 'Fr', 'He', 'Hu', 'It', 'Ja']
We also show the results of random clustering (Random) and use the same number of clusters as the language embedding based clustering, and average the BLEU scores on multiple times of random clustering (3 times in our experiments) for comparison.