A Hybrid DEA-Fuzzy Method for Risk Assessment in Virtual Organizations

Evaluation and ranking of suppliers with fuzzy DEA and PROMETHEE approach

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...

A hybrid fuzzy MADM model for environmental risk assessment: a case of an oil and gas exploitation area

Introduction: Evaluating environmental risks in the oil and gas industry is essential to prevent irreparable damage to the environment. Using classical methods for prioritizing environmental risks does not achieve high-reliable results. Therefore, the aim of this study is to minimize the limitations of classical methods in a typical oil and gas production zone, by using fuzzy logic and Multi At...

A hybrid decision making system using DEA and fuzzy models for supplier selection in the presence of multiple decision makers

Cross-efficiency evaluation by the use of ideal and anti-ideal virtual DMUs’ assessment in DEA

To rank Decision Making Units (DMU) in Data Envelopment Analysis (DEA), the peer-evaluation based cross-efficiency method is generally used. Indeed, in this method, each DMU is evaluated from the view point of other DMUs. In this article, a method is suggested which instead examines each DMU just by using the weights resulting from the evaluation of ideal and anti-ideal virtual DMUs and thus ex...

ارزیابی ریسک‌های ایمنی در پروژه‌های انبوه‏سازی با استفاده از ترکیب روش‌های فازی FMEA، فازی FTA و AHP-DEA

  Background and aims : The construction industry is known as one of the most dangerous industries in terms of work-related mortality, injury rates and workers compensation payment. Therefore, safety risk assessment is a key step to be performed for management of major construction projects. Method : Failure Mode and Effects Analysis (FMEA) is a risk assessment tool that mitigates potential fai...