IDS-Previous conferences                                  In memory of late Prof. Lotfi Zadeh   

Keynote speakers

Prof. M. M. Zahedi

Shahid Bahonar University, Kerman, Iran

Head of the High Commission on Education and Research of the Parliament.

He is the invited speaker for the opening of the conference.


Prof. Bernard De Baets

Ghent University


Prof. Janusz Kacprzyk

Polish academy of science, Poland.


Prof. Mohammad-R. Akbarzadeh

University of Mashhad


Prof. R. Farzipoor Saen

Adjunct Professor, Maastricht School of Management, Netherlands

Visiting Professor of Nottingham Trent University

Full Professor of Islamic Azad University, Karaj Branch



How to assess sustainability of suppliers in the presence of dual-role factor and volume discounts? A data envelopment analysis approach



Sustainability factors play critical role for long-term achievement of a supply chain management and purchasing process becomes more complicated with social and environmental pressures. Managing supplier selection process is a necessary step for companies seeking to manage their corporate legitimacy and reputations. Data envelopment analysis (DEA) has been widely used for supplier selection problems. In this speech, we propose a new super-efficiency method for evaluating sustainability of suppliers in presence of dual-role factors and volume discounts. We show that enhanced Russell model (ERM) fails to present a complete ranking of suppliers. Our new model presents a complete ranking and also preserves properties of ERM. Capabilities of our proposed method are shown using a couple of examples. A case study is presented to illustrate our proposed approach. The proposed method is used to select the best sustainable suppliers.


Prof. R. A. Borzooei

Shahid Beheshti University, Iran


Prof. Javier Montero

Complutense University of Madrid, Spain.