شماره ركورد كنفرانس :
102
عنوان مقاله :
MODIFICATION OF WEI & YAN APPROACH TO CONGESTION BY FACET ANALYSIS
پديدآورندگان :
DANESHVAR SAHAND نويسنده , NAGHSHBANDI MASOUD نويسنده
كليدواژه :
Congestion , modification , facet analysis , Approach
عنوان كنفرانس :
مجموعه مقالات چهل دومين كنفرانس رياضي ايران
چكيده فارسي :
One of the congestion models in DEA is WEI & Yan model. In
this model technical efficiency out of pure technical efficiency determines the
units that have weak congestion. In Wei & Yan model due to the probable
turning to zero of the weight all of the units that have weak congestion
will not be displayed. In this paper we will prevent the probable turning
to zero of weights by facet analysis. Thus, through finding upper bound
for free variable of v0 it is possible to prevent the probable weight turn
to zero. So that the DMUs that are on weak frontier head into efficiency
frontier. Finally the numbers of DMUs with weak congestion are expected
to be specified exactly.
شماره مدرك كنفرانس :
1994188