SUPPLIER SELECTION AT A PROJECT BASED COMPANY WITH 2-TUPLE MULTIMOORA APPROACH

The purpose of this thesis is to point out a comprehensive approach to what criterion that suppliers have in different levels (real numbers, number intervals or any other incalculable values), companies take into consideration when deciding which suppliers are the best alternatives for them to work with. In this thesis; the concepts of supply chain and supplier selection process are defined; as well as taking a detailed look into what criteria should be taken into consideration in the process of supplier selection. So as to make an appropriate evaluation amongst multiple supplier alternatives, a Multi Criteria Desicion Making model called MULTIMOORA is used. In addition to this approach, 2 Tuple linguistic sets are also used as a verbal expression way because of the existance of incalculable criteria being dealt with. Finally, 2 Tuple MULTIMOORA approach is created and utilized in a project based company in defense industry sector in the way that implemented creates a supplier selection model as well as specifically ranking the candidate suppliers.