# A comment on “Supply chain DEA: production possibility set and performance evaluation model

Document Type: Research Articles

Authors

Department of Mathematics, science and Research Branch, Islamic Azad University,Tehran 14515-775, Iran

Abstract

In a recent paper in this journal, Yang et al. [Feng Yang, Dexiang Wu,
Liang Liang, Gongbing Bi & Desheng Dash Wu (2009), supply chain
DEA:production possibility set and performance evaluation model] defined
two types of supply chain production possibility set which were proved to be
equivalent to each other. They also proposed a new model for evaluating
supply chains. There are, however, some shortcomings in their paper. In the
current paper, we correct the model, the theorems, and their proofs.

### References

References
[1] F. Yang, D. Wu, L. Liang, G. Bi, D. D. Wu, Supply chain
DEA:production possibility set and performance evaluation model.Journal of
Ann oper Res, DOI:10.1007/s10479-008-0511-2 (2009).