Finally, we used IWSLT tst2010, tst2011 and tst2012 as in-domain test sets.
in order to verify whether our framework can enable NMT models of two domains to benefit each other, we also tested the performance of outdomain NMT model on NIST 2003NIST , 2004NIST , 2005NIST , 2006 For the English-German translation task, our training corpora totally include one in-domain dataset: 200K TED Talk sentence pairs provided by IWSLT2015, and two out-of-domain datasets: 500K sentence pairs (News topic) extracted from WMT2014 corpus, and 500K sentence pairs (Medical topic) that are sampled from OPUS EMEA corpus 2 .