The purpose of this paper is to monitor the environmental efficiency of suppliers in the presence of undesirable output and dual-role factors with static and dynamic aspects. Meanwhile, it also aims to explain the main reason for the low efficiency of suppliers.
The authors propose a modified data model considering undesirable output and dual-role factors. The study integrates the modified data envelopment analysis model into the distance function of the Malmquist–Luenberger index. Moreover, this study uses the global benchmark technology to formulate a two-stage model. To verify the validity of this model, a model application is conducted on an automotive spare components company in China.
The results identify the unique status of dual-role factors based on the global optimality of the model and then categorize inefficient suppliers in an individual evaluation cycle. In addition, each supplier is projected on a frontier curve after obtaining the improved data. Furthermore, through the status plot of M-L and its components, this paper concludes that efficiency scale change is the main reason for the gap in ecological performance between different suppliers.
The proposed model considers both undesirable output and dual-role factors; however, variables with different features, such as imprecise, fuzzy and qualitative characteristics, can be embedded into the presented two-stage model.
Evaluating green suppliers through multiple consecutive evaluation cycles will aid a company in effectively managing its key suppliers. Furthermore, the evaluation provides policy guidance for further improvement of suppliers.
This study was supported by Fundamental Research Funds for the Central University (under Grant No. 106112017CDJXSYY0001) and the Fundamental Research Funds for the Chongqing Key Project of Technological Innovation and Application Demonstration Project (under Grant Nos cstc2018jszx-cyzdX0143 and cstc2018jszy-cyzdX0146). The authors would like to thank the team members of Demonstration of intelligent manufacturing application of automobile engine based on industrial internet. The authors also appreciate the editor and the anonymous referees for their manuscript processing and remarkable comments.
Li, F., Deng, L., Li, L., Cheng, Z. and Yu, H. (2020), "A two-stage model for monitoring the green supplier performance considering dual-role and undesirable factors", Asia Pacific Journal of Marketing and Logistics, Vol. 32 No. 1, pp. 253-280. https://doi.org/10.1108/APJML-02-2019-0110
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