Bài báo/NewspaperThe extensions, new developments and new interpretations for DEA covered in this paper
include: (1) new measures of efficiency, (2) new models and (3) new ways of implement ing established models with new results and interpretations presented that include treat ments of "congestion", "returns-to-scale" and "mix" and "technical" inefficiencies and
measures of efficiency that can be used to reflect all pertinent properties. Previously used
models, such as those used to identify "allocative inefficiencies", are extended by means
of "assurance region" approaches which are less demanding in their information require ments and underlying assumptions. New opportunities for research a...