A Modified Variable Returns to Scale Super-efficiency Model

摘要：

Traditional super-efficiency data envelopment analysis (DEA) models rank efficient units under the assumption of constant returns to scale (CRS).However,infeasibility may occur in super-efficiency models under variable returns to scale (VRS).This paper proposes a modified VRS super-efficiency DEA model to deal with infeasibility by relaxing the convexity constraint∑nj=1、j ≠0λj=1 to ∑nj=1、j ≠0λj=d≥1 where d is not always equal to one,and the efficiencyscore of the evaluated DMU is redefined as a result.Moreover,it provides appropriate super-efficiency scores which can completely rank BCC efficient units.Numerical examples are used to illustrate the proposed procedures.

关键词： DEA VRS Infeasibility Super-efficiency

作者: WU Jin xiu LIANG Liang

作者单位: School of Management,University of Science and Technology of China,He Fei,An Hui 230026,P.R.China

会议类型: 国际会议

会议名称: 2007 International Conference on Management Science and Engineering(2007管理科学与工程国际学术会议)

会议地点: 河南焦作

会议语种:英文

页码: 1152-1156

在线出版日期: 2007-08-20（万方平台首次上网日期，不代表论文的发表时间）