نتایج جستجو برای: fuzzy data envelopment analysis

تعداد نتایج: 4548037  

2011
Rashmi Malhotra

To screen consumer loan applications, loan officers use many different methods besides intuitive judgment and experience. They use mathematical techniques such as credit-scoring models and traditional statistical models. In addition, many financial institutions use artificial intelligence methods such as expert systems, artificial neural systems, and fuzzy logic. This study proposes the develop...

2014
R. Radfar

Supplier selection is a multi-Criteria problem. This study proposes a hybrid model for supporting the suppliers’ selection and ranking. This research is a two-stage model designed to fully rank the suppliers where each supplier has multiple Inputs and Outputs. First, the supplier evaluation problem is formulated by Data Envelopment Analysis (DEA), since the regarded decision deals with uncertai...

K. Gholami, Z. Ghelej Beigi

Data envelopment analysis (DEA) is a common technique in measuring the relative efficiency of a set of decision making units (DMUs) with multiple inputs and multiple outputs. ‎‎Standard DEA models are ‎‎quite limited models‎, ‎in the sense that they do not consider a DMU ‎‎at different times‎. ‎To resolve this problem‎, ‎DEA models with dynamic ‎‎structures have been proposed‎.‎In a recent pape...

Journal: :iranian journal of optimization 2009
farhad hosseinzadeh lotfi f. rezaie balf a. taghavi

this paper investigates a procedure for identifying all efficient hyperplanes of production possibility set (pps). this procedure is based on a method which recommended by pekka j. korhonen[8]. he offered using of lexicographic parametric programming method for recognizing all efficient units in data envelopment analysis (dea). in this paper we can find efficient hyperplanes, via using the para...

Journal: :international journal of mathematical modelling and computations 0
z. molaee azad university, central tehran branch iran, islamic republic of department of mathematics a. zandi azad university, central tehran branch iran, islamic republic of department of mathematics

data envelopment analysis (dea) with considering the best condition for each decision making unit (dmu) assesses the relative efficiency for it and divides a homogenous group of dmus in to two categories: efficient and inefficient, but traditional dea models can not rank efficient dmus. although some models were introduced for ranking efficient dmus, franklin lio & hsuan peng (2008), proposed a...

Journal: :ژورنال بین المللی پژوهش عملیاتی 0
a. jafari shaerlar h. azizi r. jahed

data envelopment analysis (dea) is a method to measure relative efficiency of a set of decision-making units (dmus) which uses multiple inputs and produces multiple outputs. in the conventional dea, crisp inputs and outputs are fundamentally necessary. but the observed values of inputs and outputs in real-world problems are sometimes imprecise. thus, performance measurement often needs to be do...

A. Mahmoodi Rad M. Sanei R. Dehghan

In original Data Envelopment Analysis (DEA) models for measuring the relative efficiencies of a set of Decision Making Units (DMUs) using various inputs to produce various outputs are limited to crisp data. To deal with imprecise data, the notion of fuzziness has been introduced. this paper develops a procedure to measure the efficiencies of DMUs with fuzzy observations. The basic idea is to tr...

Balal karimi Esmaeil Khorram

In the process of production, some of the inputs are fixed and cannot easily be changed, such as work hours of workers and hours of administrative or work, these types of inputs are fixed and others are variables. In this paper, by considering some inputs or outputs which are limited, their amounts must be integrated; this concept for integer data is extended. We show the importance of subject ...

2012
Ali Yaghoubi Mehdi Bashiri

Data Envelopment Analysis is a technique based on linear programming methods to construct surface or non parametric boundary over the data. This boundary is used to evaluate proportional efficiency. In this paper, a mixed model was proposed based on Stochastic Data Envelopment Analysis (SDEA) and Principal Component Analysis (PCA) for predicting the similar units' efficiencies in an organizatio...

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