Title:	A geometrical approach for fuzzy DEA frontiers.
Authors:	BIONDI NETO, L. MELLO, J. C. C. B. S. de MEZA, L. A. GOMES, E. G.
Affiliation:	LUIZ BIONDI NETO, UNIVERSIDADE ESTADUAL DO RIO DE JANEIRO; JOÃO CARLOS C. B. SOARES DE MELLO, UNIVERSIDADE FEDERAL FLUMINENSE; LIDIA ANGULO MEZA, UNIVERSIDADE FEDERAL FLUMINENSE; ELIANE GONCALVES GOMES, SGE.
Date Issued:	2009
Citation:	IN: SIMPÓSIO BRASILEIRO DE PESQUISA OPERACIONAL, 41., 2009, Porto Seguro.
Description:	Interval DEA frontiers are here used in situation where one input or output is subject to uncertainty in its measurement and is presented as an interval data. We built an efficient frontier without any assumption about the probability distribution function of the imprecise variable. We take into account only the minimum and the maximum values of each imprecise variable. Two frontiers are constructed: the optimistic and the pessimistic ones. We use fuzszy relationships to introduce a new efficiency index based on a set of some Fuzzy T Norms. We will explore only the case where only on single variable presents a certain degree of uncertainty.
Keywords:	Data envelopment analysis Fuzzy sets Interval data
Type of Material:	Artigo em anais e proceedings
Access:	openAccess
Appears in Collections:	Artigo em anais de congresso / Embrapa Unidades Centrais (AI-SEDE)