Documents disponibles écrits par cet auteur

Adjusted spherical frontier model: allocating input via parametric DEA / E. C. C. Guedes in Journal of the operational research society (JORS), Vol. 63 N° 3 (Mars 2012) 

Public ISBD [article]  in Journal of the operational research society (JORS) > Vol. 63 N° 3 (Mars 2012) . - pp. 406–417 Titre : Adjusted spherical frontier model: allocating input via parametric DEA Type de document : texte imprimé Auteurs : E. C. C. Guedes, Auteur ; Milioni, A. Z., Auteur ; de Avellar, J. V. G., Auteur Année de publication : 2012 Article en page(s) : pp. 406–417 Note générale : Recherche opérationnelle Langues : Anglais (eng) Mots-clés : DEA  Parametric  DEA  Input  allocation  Fixed  cost  allocation Index. décimale : 001.424 Résumé : This paper presents the adjusted spherical frontier model (ASFM), a parametric data envelopment analysis (DEA) model for input allocation. Following a common principle from other solutions found in the literature, ASFM considers that the process of allocating the new input is fair if it ends in such a way that all decision-making units will become DEA-CCR efficient. ASFM's main assumption is the spherical shape of the efficiency frontier. It is because of that assumption that ASFM is called a parametric DEA model. Numeric examples are presented showing that, within the context of sensitivity analysis, ASFM reaches more coherent results than other models found in the literature. This numeric evidence leads to a theorem which formally states this more coherent behaviour. The proof of this theorem is included in this paper. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v63/n3/abs/jors201142a.html [article] Adjusted spherical frontier model: allocating input via parametric DEA [texte imprimé] / E. C. C. Guedes, Auteur ; Milioni, A. Z., Auteur ; de Avellar, J. V. G., Auteur . - 2012 . - pp. 406–417. Recherche opérationnelle Langues : Anglais (eng) in Journal of the operational research society (JORS) > Vol. 63 N° 3 (Mars 2012) . - pp. 406–417 Mots-clés : DEA  Parametric  DEA  Input  allocation  Fixed  cost  allocation Index. décimale : 001.424 Résumé : This paper presents the adjusted spherical frontier model (ASFM), a parametric data envelopment analysis (DEA) model for input allocation. Following a common principle from other solutions found in the literature, ASFM considers that the process of allocating the new input is fair if it ends in such a way that all decision-making units will become DEA-CCR efficient. ASFM's main assumption is the spherical shape of the efficiency frontier. It is because of that assumption that ASFM is called a parametric DEA model. Numeric examples are presented showing that, within the context of sensitivity analysis, ASFM reaches more coherent results than other models found in the literature. This numeric evidence leads to a theorem which formally states this more coherent behaviour. The proof of this theorem is included in this paper. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v63/n3/abs/jors201142a.html

Hyperbolic frontier model / Milioni, A. Z. in Journal of the operational research society (JORS), Vol. 62 N° 6 (Juin 2011) 

Public ISBD [article]  in Journal of the operational research society (JORS) > Vol. 62 N° 6 (Juin 2011) . - pp. 1029–1037 Titre : Hyperbolic frontier model : a parametric DEA approach for the distribution of a total fixed output Type de document : texte imprimé Auteurs : Milioni, A. Z., Auteur ; de Avellar, J. V. G., Auteur ; Rabello, T. N., Auteur Année de publication : 2011 Article en page(s) : pp. 1029–1037 Note générale : Recherche opérationnelle Langues : Anglais (eng) Mots-clés : Data  envelopment  analysis  Output  distribution  Convex  frontier Index. décimale : 001.424 Résumé : This paper addresses the problem of assigning shares of a new total fixed output to a group of decision making units (DMUs) using data envelopment analysis (DEA), by assuming the existence of a predefined hyperbolic locus of points that characterizes the DEA frontier. The problem of redistributing an already existing output is then addressed, where the total value of this output may vary, so that no DMU is required to decrease its current output value in the new distribution. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v62/n6/abs/jors201024a.html [article] Hyperbolic frontier model : a parametric DEA approach for the distribution of a total fixed output [texte imprimé] / Milioni, A. Z., Auteur ; de Avellar, J. V. G., Auteur ; Rabello, T. N., Auteur . - 2011 . - pp. 1029–1037. Recherche opérationnelle Langues : Anglais (eng) in Journal of the operational research society (JORS) > Vol. 62 N° 6 (Juin 2011) . - pp. 1029–1037 Mots-clés : Data  envelopment  analysis  Output  distribution  Convex  frontier Index. décimale : 001.424 Résumé : This paper addresses the problem of assigning shares of a new total fixed output to a group of decision making units (DMUs) using data envelopment analysis (DEA), by assuming the existence of a predefined hyperbolic locus of points that characterizes the DEA frontier. The problem of redistributing an already existing output is then addressed, where the total value of this output may vary, so that no DMU is required to decrease its current output value in the new distribution. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v62/n6/abs/jors201024a.html