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    Browsing by Author W.W. Cooper

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    • A note on returns to scale in DEA

      • Authors: R.D. Banker (1996)

    • This brief note adds computational convenience and efficiency to the article by Banker and Thrall on returns to scale in DEA by modifying one of their suggestions to avoid the need for examining all alternate optima in order to reach a decision.
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    • Extensions and new developments in DEA

      • Authors: W.W. Cooper (1996)

    • The 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...