Ranking of product alternatives based on customer-designer preferences

In this research paper the alternatives of vacuum cleaners are ranked using MADM methods such as Simple Additive Weighing (SAW) Method, Weighted Product Method (WPM), Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) Method, Modified TOPSIS, Grey Relational Analysis (GRA) and Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE). The results of various methods are then compared and a new quantitative approach has been suggested in case of tie. It is observed that the proposed quantitative approach provides better guidelines to the decision maker, than that provided by qualitative approach applied by earlier researchers.