A new data envelopment analysis(max-min DEA) model is proposed by maximizing the efficiency of the minimal efficiency Units.The idea combing selfrated and other-rated schema is adopted in the proposed model.Thus,to some extent,two inter-related problems that are weak discriminating power and unrealistic weight distribution occurred in classical DEA are solved.In this model,efficiency criteria more restrictive than the classical one will yield fewer efficient DMUs and will allow less flexibility for input/ou...