Comparative analysis of supplier selection models

Selecting the suitable suppliers is significant for ensuring a company's operational efficiency and product quality. This study investigates and compares three methods for supplier selection including DEMATEL (Decision Making Trial and Evaluation Laboratory), TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution), and AHP (Analytic Hierarchy Process), to identify the most effective approach for dealing with uncertainty and complexity. The study's methodology includes applying each method to a case study to compare and analyze the outcome of each method. Findings indicate that DEMATEL provides a more comprehensive understanding of criteria interrelationships, making it suitable for complex decision making scenarios, whereas TOPSIS and AHP are more effective in less complex contexts. This research offers valuable insights into the strengths and weaknesses of each method, highlighting the benefits of DEMATEL in complex environments and providing a basis for businesses to improve their supplier selection processes.