Efficient decisions using DEA

Mendes, Armando B.; Silva, Emiliana; Noncheva, Veska

Publication

Efficient decisions using DEA

2011Conference object

dc.contributor.author	Mendes, Armando B.
dc.contributor.author	Silva, Emiliana
dc.contributor.author	Noncheva, Veska
dc.date.accessioned	2014-01-23T17:46:38Z
dc.date.available	2014-01-23T17:46:38Z
dc.date.issued	2011
dc.date.updated	2014-01-22T00:39:21Z
dc.description	Workshop "Modelos de Apoio à Decisão na Agricultura e Ambiente". Universidade dos Açores, Angra do Heroísmo, Ilha Terceira, Açores, 16 de Setembro de 2011.	por
dc.description.abstract	Data Envelopment Analysis (DEA) is becoming an increasingly popular management tool for decision support related to efficiency comparisons. The task of the DEA is to evaluate the relative performance of units of a system. Is not a problem solution technique but an important problem analysis method based in mathematical programming with some similarities with Multiple Criteria Decision Analysis (MCDA). DEA makes it possible to identify efficient and inefficient units in a framework where results are considered in their particular context. The units to be assessed should be relatively homogeneous and were originally called Decision Making Units (DMUs). It is an extreme point method that compares each DMU with the "best" DMUs. The “Productivity Analysis with R” (PAR) framework establishes a user - friendly data envelopment analysis environment with special emphasis on variable selection and aggregation, and summarization and interpretation of the results. PAR framework has been developed to distinguish between efficient and inefficient observations of performances and to advise explicitly for producers’ possibilities to optimize their production. In this work we will apply PAR to farms in Terceira Island, with a small data set of 30 farms. This data set includes 14 input variables and 4 output variables. With PAR was possible to conclude that 4 farms are scale – efficient and the others are scale inefficiency due to decreasing returns to scale or increasing returns to scale. This implies that either the dairy farm is too big (the number of cows is too large) or to small and that the farmer can improve the productivity of inputs and hence reduce unit costs by reducing or increasing the dimension of the farm.	en
dc.identifier.citation	Mendes, Armando B.; Silva, Emiliana Leonilde Diniz Gil Soares da; Noncheva, Veska (2011). "Efficient decisions using DEA", Trabalho apresentado em Workshop Modelos de Apoio à Decisão na Agricultura e Ambiente, In Proceedings do Workshop Modelos de Apoio à Decisão na Agricultura e Ambiente, Angra do Heroísmo: Universidade dos Açores.	por
dc.identifier.uri	http://hdl.handle.net/10400.3/2639
dc.language.iso	eng	por
dc.publisher	Universidade dos Açores	por
dc.subject	Efficiency Decisions	en
dc.subject	DEA	por
dc.subject	CCA	por
dc.subject	Feature Selection and Extraction	en
dc.title	Efficient decisions using DEA	en
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Angra do Heroísmo	por
oaire.citation.title	Modelos de Apoio à Decisão na Agricultura e Ambiente.	por
rcaap.rights	openAccess	por
rcaap.type	conferenceObject	por