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

Table 6

The performances on WMT12 testing corpora using Spearman correlation.

System	Correlation score with human judgments
	Other-to-English					English-to-other					Mean
	CS-EN	DE-EN	ES-EN	FR-EN	Mean	EN-CS	EN-DE	EN-ES	EN-FR	Mean
nLEPOR𝐴	0.89	0.77	0.91	0.81	0.85	0.75	0.34	0.45	0.77	0.58	0.71
METEOR	0.66	0.89	0.95	0.84	0.84	0.73	0.18	0.45	0.82	0.55	0.69
BLEU	0.89	0.67	0.87	0.81	0.81	0.80	0.22	0.40	0.71	0.53	0.67
TER	0.89	0.62	0.92	0.82	0.81	0.69	0.41	0.45	0.66	0.55	0.68

Bold fonts mean the best performance.