并联结构决策单元的DEA效率评价研究

对复杂生产系统进行效率评价,是改善其运作性能的重要工具.并联结构生产系统是一类有代表性的复杂生产系统,现有研究已经提出了若干针对并联结构生产系统的效率评价问题.然而,现有研究均未考察并联生产系统的前沿生产能力.本文分析了并联生产系统的前沿生产能力,提出了评价并联生产系统的乘数模型和包络模型,证明了这两个模型与有关文献的等价性.与传统CCR模型相比较,本文模型具有更强的鉴别能力,可更大程度挖掘系统整体性能改善的潜力.最后,一个农业评价的实证研究验证了有关结论.

DEA Efficiency Evaluating Models for DMUs with Parallel Structure

DEA efficiency evaluation to complex production systems is an important tool to help to improve the operational efficiency.The parallel system is a typical complex system.The existing researches have proposed several efficiency evaluating models.However, the existing researches have not considered the frontier production ability of parallel systems.Then, this paper analyzes the frontier production ability, develop s a multiplier model and an envelopment model for efficiency evaluation to parallel systems, and approves the relationship of our models and previous studies.Relative to the traditional CCR model, our models have higher discriminability, and can find out the potential for system improvement more greatly.Finally, a real world application about agriculture evaluation demonstrates the proposed models and approves related conclusions.