Global multi-period performance evaluation – New model and productivity index

In this paper, we introduce a novel multi-period data envelopment analysis (MDEA) model that attempts to circumvent the limitations of existing MDEA models. The proposed global is essentially based on major modifications fundamental DEA axioms enable decision making unit (DMU), defined with inputs and outputs period t , be evaluated within production possibility set (PPS) another l ≠ l. Building properties model, also productivity index, identified as Global Progress Regress index (GPRI), render possible evaluation DMU’s extent progress or regress over time horizons under variable returns scale (VRS) technologies. This lifts restrictions two successive periods constant (CRS) indices. most salient features new well GPRI are highlighted using an application involves real-life sample 25 bank branches considered 4 years.