Interval Efficiency Assessment in Network Structure Based on Cross –Efficiency

Subject Areas : policy making

nasim roudabr ¹ , seyed esmaeil najafi ²

1 - department of industrial engineering, science and research branch of Islamic Azad university, Tehran
2 - Department of Industrial Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran.

Received: 2019-03-12 Accepted : 2019-03-12 Published : 2018-03-01

Keywords: * data envelopment analysis, * network DEA, * cross efficiency, * Interval data,

Abstract :

As we know, in evaluating of DMUs some of them might be efficient, so ranking of them have a high significant. One of the ranking methods is cross-efficiency. Cross efficiency evaluation in data envelopment analysis (DEA) is a commonly used skill for ranking decision making units (DMUs). Since, many studies ignore the intra-organizational communication and consider DMUs as a black box. For significant of this subject, we applied cross-efficiency for network DMUs. However, In view of the fact that precise input and output data may not always be available in real world due to the existence of uncertainty, we have developed the model with interval data. the existing classical interval DEA method is not able to rank the DMUs, but can only classify them as efficient or inefficient , so this paper improve that. The proposed method can be used for each network that includes DMUs with two stages in production process. However, this paper is the first study that examined cross efficiency of DMUs in structure framework with interval data. the new approach enables us to ranking of first stage for n DMU and second stages of them. DMUs with the best rank can be used as benchmark for improving efficiency of other DMUs. Finally, We present Illustrate example with two steps for proposed model that can be develop for more than two steps.

References:

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