Operation Efficiency Evaluation of the China-Europe Freight Train Based on Grey Cross-Efficiency DEA

Table 9

Efficiency values of each DMU.

Year	DEA model	Cross-efficiency DEA model	The propose dmodel
2011	0.9469	0.5581	0.5401
2012	1.0000	0.5882	0.5692
2013	1.0000	0.6405	0.6295
2014	0.9931	0.7134	0.6934
2015	1.0000	0.8066	0.7906
2016	1.0000	0.7705	0.7595
2017	1.0000	0.8224	0.8094
2018	1.0000	0.8305	0.8145