Abstract
Some prominent literature in the DEA field has displayed the following three problems involving zeros: (1) The structural role of zeros in data has not necessarily been recognized; in fact, without explanation, arbitrary, small positive numbers have been substituted for such zeros. (2) It is not well recognized that the artificial, non-Archimedean construct is not necessarily needed to exclude zero multipliers and to identify positive slacks. (3) Because of degeneracy, optimal solutions are not necessarily unique; this lack of uniqueness is especially important in interpretation of the multipliers and slacks.
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The editor for this paper was R. Robert Russell.
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Thompson, R.G., Dharmapala, P.S. & Thrall, R.M. Importance for DEA of zeros in data, multipliers, and solutions. J Prod Anal 4, 379–390 (1993). https://doi.org/10.1007/BF01073546
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DOI: https://doi.org/10.1007/BF01073546