Unsupervised Quality Estimation Model for English to German Translation and Its Application in Extensive Supervised Evaluation

Table 5

The number of effective MT systems in WMT11 and WMT12.

Year	Number of evaluated MT systems
	Other-to-English				English-to-other
	CS-EN	DE-EN	ES-EN	FR-EN	EN-CS	EN-DE	EN-ES	EN-FR
WMT11	8	20	15	18	10	22	15	22
WMT12	6	16	12	15	13	15	11	15