Σύγκριση μεθόδων

	Δικτυακή Ανάλυση Περιβάλλουσας Δεδομένων (Network DEA)	Δείκτης Παραγωγικότητας Malmquist
Πεδίο	Ανάλυση Αποδοτικότητας	Ανάλυση Αποδοτικότητας
Οικογένεια	Regression model	Regression model
Έτος προέλευσης	2000	1994
Δημιουργός	Färe & Grosskopf	Färe, Grosskopf, Norris & Zhang
Τύπος	Multi-stage nonparametric efficiency model	Non-parametric productivity index
Θεμελιώδης πηγή	Färe, R., & Grosskopf, S. (2000). Network DEA. Socio-Economic Planning Sciences, 34(1), 35–49.	Färe, R., Grosskopf, S., Norris, M., & Zhang, Z. (1994). Productivity growth, technical progress, and efficiency change in industrialized countries. American Economic Review, 84(1), 66–83.
Εναλλακτικές ονομασίες	Network Data Envelopment Analysis, Network Efficiency Analysis, Multi-Stage DEA, Ağ Veri Zarflama Analizi	MPI, Malmquist Index, Malmquist DEA Productivity Index, Malmquist Verimlilik Endeksi
Συναφείς	2	1
Σύνοψη	Network Data Envelopment Analysis (Network DEA) is a nonparametric efficiency measurement framework introduced by Färe and Grosskopf (2000) that extends classical DEA to multi-stage or multi-division production processes. Rather than treating a decision-making unit as a black box, it explicitly models the internal structure — the divisions and the intermediate products that flow between them — enabling stage-level and overall efficiency scores to be estimated simultaneously within a single coherent model.	The Malmquist Productivity Index (MPI) is a non-parametric measure of total factor productivity (TFP) change over time. Formally grounded in distance functions by Caves, Christensen, and Diewert (1982) and operationalized using Data Envelopment Analysis by Färe, Grosskopf, Norris, and Zhang (1994), MPI decomposes productivity growth into two components: efficiency change (catching-up to the frontier) and technical change (shift of the frontier itself).