De Witte, Kristof; Geys, Benny - 2009
rooted in popular Data Envelopment
Analysis models, but allows for both outlying observations and heterogeneity (i.e., a …-
tion technology. While our approach is in this respect closely related to Data Envelopment
Analysis (DEA) models (Charnes … have relied on Data Envelopment
Analysis (DEA) as their main statistical tool (the only three exceptions being Vitaliano …