(2009) showed that the popular BLEU and NIST do not work well by using the system outputs of the NTCIR-7 PATMT (patent translation) JE task (Fujii et al., 2008).
rOUGE-L (Lin and Hovy, 2003), Word Error rate (WEr), and IMPACT (Echizen-ya and Araki, 2007) worked better.