Table 3. TER scores comparing MT outputs to references.

Methods	IWSLT	Europarl	News commentary	WMT
NMT	0.628	0.521	0.736	0.682
PBMT	0.584	0.503	0.712	0.641
HMMT	0.601	0.517	0.729	0.673
iNMT	0.552	0.492	0.698	0.635