Purpose: Evaluation and selection of efficient suppliers is one of the key issues in supply chain management which depends on wide range of qualitative and quantitative criteria. The aim of this research is to develop a mathematical model for evaluating and selecting efficient suppliers when...

Data-Driven Multi-Criteria Group Decision Making Under Heterogeneous Information -- Supplier Evaluation with Q-Rung Orthopair Fuzzy-Based COPRAS Method -- An Integrated Intuitionistic Fuzzy MCDM Model: Its Application to RIS -- Prioritization of Automotive Dealers According to Environmental...

Fair Assignment of Debt Cases to Legal Debt Collection Centers -- On the Principle of Lagrange in Optimization Theory and Its Application in Transportation and Location Problems -- Measuring Foreign Trade-Logistics Efficiency: A DEA Approach and the Malmquist Index -- Partially Non-discretionary...

Introduction to GAMS -- Introduction to Data Envelopment Analysis -- Extensions of DEA models -- Non-radial DEA models -- Allocative, cost, technical, revenue, and profit efficiency -- Special cases in DEA -- Productivity change -- Concluding remarks.

Managing Service Productivity using Data Envelopment Analysis -- Development of Assessment Model for Research Efficiency of Universities -- Incorporating intra- and inter-input/output weight restrictions in piece-wise linear DEA: an application to the assessment of the research activity in...

In this paper we deal with the measurement of technical efficiency (or X-efficiency) of institutions whose operations might be significantly affected by macroeconomic, environmental and non-controllable factors. For this purpose we introduce a four-stage DEA methodology based on the approach...