Estimation of Return to Scale under Weight Restrictions in Data Envelopment Analysis

Return-to-scale (rts) is a most important topic in dea. many methods are not obtainedfor estimating rts in dea, yet. in this paper has developed the banker-trall approach toidentify situation for rts for the bcc model multiplier form with virtual weight restrictionsthat are imposed to model by dm judgments. imposing weight restrictions to dea models oftenhas created problem of infeasibility the dea models. thus, the proposed models via estellitalins et al. (2006) are applied for testing feasibility weighted bcc model and to provideminimally acceptable adjustments to original restrictions that render the weighted modelfeasible.