A Decision Making Method via TOPSIS on Soft Sets

In this paper, we first present TOPSIS (technique for order performance by similarity to ideal solution) that is a multi-criteria decision making (MCDM) technique. TOPSIS is a practical and useful technique for ranking and selection of a num- ber of externally determined alternatives through distance mea- sures. We then give a decision making method by suing TOPSIS on soft set theory. Finally an application is given for this new method.