Appling Cross Efficiency Method to Determine the Score and Rank of Iranian Provinces in Onion Production
This study was carried out in order to determine the efficiency rank of onion producing provinces using DEA extended models. The results showed that the basic Charnes, Cooper and Rhodes model (CCR) could only identify the efficiency score of seven provinces but the super efficiency (SE) method ranked all of the provinces except Kurdistan and Gilan. The finding illustrated that correlation coefficients in the basic model (CCRCOR) increased the discrimination power of model by reducing the number of unranked provinces from 18 to 12. It was showed that the cross efficiency method (CEM) produced the most complete ranking among others. According to this model, the provinces of Qom, Razavi Khorasan and Hormozgan with 0.3141, 0.3225 and 0.3934 scores took the 25th, 24th and 23rd places and the provinces of Ilam, Sistan & Baluchestan and Hamedan with 0.9047, 0.9015 and 0.8564 scores took the first, second and third places, respectively. The correlation coefficients analysis showed that the ranking of CCRCOR model was more similar to CEM ranking model. If the results from efficiency ranking compared with those yield or production rankings, it could be observed that the provinces of Lorestan, Esfahan and Yazd with 74,722, 64,073 and 60,032 kg per hectare had the highest yield in the country, but their efficiency ranks were 5, 7 and 8, respectively. In terms of total production, the provinces of East Azerbaijan, Tehran and Esfahan were ranked from first to third, but their efficiency ratings were 17, 23 and 7, respectively.
Journal of Economics and Agricultural Development, Volume:29 Issue:3, 2016
258 - 271  
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