Chain Network DEA Model
Pang Li-yong · Shuxue de shijian yu renshi · 2010
Data Envelopment Analysis(DEA) is a well tool of measuring relative efficiency of decision make units(DMU),and it has been widely applied in many fields.Conventional DEA measures the efficiency of decision make units,which does not consider the interior structure of system but treats the system as a ′black box′.This paper proposes a new network DEA model-Chain Network DEA Model which deals with multi-stage network structure.This paper investigates the relationship between network DEA efficiency and stage weak DEA efficiency of network DMU and develops a necessary and sufficient condition for network DEA efficiency.If the given network DMU is not network DEA efficient,we can point out that which stages axe inefficient according to the chain network DEA model.