Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Column generation with free replicability in DEA
AU - Ehrgott, Matthias
AU - Tind, Jørgen
PY - 2009/10/1
Y1 - 2009/10/1
N2 - The evaluation of efficiency scores in data envelopment analysis is based on the construction of artificial decision making units subject to some assumptions, usually requiring convexity of the production possibility set. This demands divisibility in input and output, which is not always possible. The so-called free replicability model, proposed by Henry Tulkens, permits input and output to enter in only discrete amounts. The model is of a mixed integer programming type, for which the number of variables, here corresponding to the decision making units, may be critical in order to reach an optimal solution.We suggest to use column generation techniques to include only those decision making units that may contribute to the creation of an optimal solution.
AB - The evaluation of efficiency scores in data envelopment analysis is based on the construction of artificial decision making units subject to some assumptions, usually requiring convexity of the production possibility set. This demands divisibility in input and output, which is not always possible. The so-called free replicability model, proposed by Henry Tulkens, permits input and output to enter in only discrete amounts. The model is of a mixed integer programming type, for which the number of variables, here corresponding to the decision making units, may be critical in order to reach an optimal solution.We suggest to use column generation techniques to include only those decision making units that may contribute to the creation of an optimal solution.
KW - Data envelopment analysis
KW - Free replicable hull
KW - Branch and bound
KW - Cutting plane
KW - Column generation
U2 - 10.1016/j.omega.2008.08.003
DO - 10.1016/j.omega.2008.08.003
M3 - Journal article
VL - 37
SP - 943
EP - 950
JO - Omega: The International Journal of Management Science
JF - Omega: The International Journal of Management Science
SN - 0305-0483
IS - 5
ER -