This paper improves on the issues of extreme data points and heterogeneity found in the linear programming data envelopment analysis (DEA) by presenting a cluster-adjusted DEA model (DEA with cluster approach). This analysis, based on efficiency, determines the number of clusters via Gap...

Agricultural production is often exposed to several sources of risks, uncertainties and random shocks. These risks and random shocks make the evaluation the influence of policy interventions in the agricultural sector difficult due to the existence of limited data about random events....