DETERMINING THE STRONGLY AND WEAKLY MOST CONGESTED FIRMS IN DATA ENVELOPMENT ANALYSIS

Determining the strongly and weakly most congested firms (or decision making units (DMUs)) is a very important issue for decision makers, however, there is no study on determining these DMUs in data envelopment analysis (DEA). Hence, to do this, we first propose a DEA approach to recognize congestion status of DMUs and then, two integrated mixed integer programming (MIP)-DEA models is presented to determine the strongly and weakly most congested DMUs. Finally, a numerical example is provided to illustrate the purpose of this research.