While the experiments using the subtitle corpora presented in the previous section allow a fair comparison of a large number of language pairs, they also exhibit certain restrictions: (1) all experiments are limited to a single domain, (2) the source sentences are fairly short, and (3) to ensure consistent corpus sizes, a limited number of 800k sentence pairs had to be used.
we perform an additional set of experiments with data from different domains, longer sentences and a larger number of sentence pairs.