Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/47286 
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dc.contributor.authorKrivonozhko, Vladimiren
dc.contributor.authorFørsund, Finn R.en
dc.contributor.authorLychev, Andrey V.en
dc.date.accessioned2011-07-01T08:42:34Z-
dc.date.available2011-07-01T08:42:34Z-
dc.date.issued2010-
dc.identifier.urihttp://hdl.handle.net/10419/47286-
dc.description.abstractA new DEA model has been introduced recently combining the primal and the dual models in order to impose strong complementary slackness conditions. It was claimed that a reference set that contains the maximum number of efficient units can then be determined. The model is very interesting as a theoretical idea. However, not only does the computational burden increase significantly, but it seems also that the basic matrices may be inherently ill-conditioned, leading to wrong results. Numerical experiments have been carried out on two real datasets of medium size with 163 and 920 units. These experiments show pervasive existence of ill-conditioned matrices leading to obviously wrong estimates of efficiency scores, and units declared as efficient reference units while actually being inefficient.en
dc.language.isoengen
dc.publisher|aUniversity of Oslo, Department of Economics |cOsloen
dc.relation.ispartofseries|aMemorandum |x2010,17en
dc.subject.jelC61en
dc.subject.jelD20en
dc.subject.ddc330en
dc.subject.keywordData envelopment analysisen
dc.subject.keywordBCC modelen
dc.subject.keywordDEA/SCSC modelen
dc.subject.keywordstrong complementary slackness conditionsen
dc.titleA note on imposing strong complementary in DEA-
dc.typeWorking Paperen
dc.identifier.ppn640475981en
dc.rightshttp://www.econstor.eu/dspace/Nutzungsbedingungenen

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