Application of Expectation Maximization Method for Purchase Decision-Making Support in Welding Branch

Received: 30 March 2016 Abstract Accepted: 1 June 2016 The article presents a study of applying the proposed method of cluster analysis to support purchasing decisions in the welding industry. The authors analyze the usefulness of the non-hierarchical method, Expectation Maximization (EM), in the selection of material (212 combinations of flux and wire melt) for the SAW (Submerged Arc Welding) method process. The proposed approach to cluster analysis is proved as useful in supporting purchase decisions.