房地产企业转型效率评价的模糊两阶段DEA模型

The fuzzy two-stage DEA moder for the efficiency evaluation of real estate inteprise transformation

针对传统DEA模型的不足,结合房地产企业特点,将转型过程分解为转型准备和转型实施两个前后相续的子阶段,提出了基于转型过程的模糊两阶段DEA模型.考虑某些转型要素对两阶段过程的同时作用,引入要素在子阶段间的分配比率,实现了对传统效率测算方法的改进.引入了模糊数代替原有指标,消除指标不确定性及其相互影响的情况.模型评价了中国14家上市房地产企业的转型效率,并获得了企业转型部署的相关建议.结果表明该模型突破了传统DEA模型忽视内部运转机理的缺陷,对转型效率评价具合理性和有效性.

Evaluating of efficiency with existing traditional DEA model can be effective, but the efficiency value cannot be compared. In this paper, combining with the characteristics of real estate enterprises, we put forward a fuzzy two-stage model based on the transformation process. The transformation process is decomposed into two sequential phases, i. e. the preparation and implementation for the efficiency evaluation of real estate enterprise transformation. Considering some transition elements on the role at the same time,the two stage process introduced a distribution ratio between two stages,and thus realized the improvements on the efficiency of traditional calculation methods. In addition, to eliminate the uncertainty of indexes and influence between them,this paper introduces the fuzzy number instead of the original target. This model measures the efficiency of phase transformation of China＇s 14 listed real estate enterprises, and achieve a path planning advice for the transformation. The result shows that this model breaks through the traditional model ignoring the internal operation mechanism and uncertain factors of defects. It has certain rationality and validity for the transformation efficiency evaluation.