Abstract
Within a supply chain, purchasing plays a key role in achieving corporate competition. Hence, selecting the right suppliers is a vital component of these strategies. In practice, supplier selection is a multi-objective programming problem with vagueness and imprecision of the input data. In spite of the importance of the problem, the literature on this subject is relatively scarce. In this paper, a fuzzy multi-objective linear/nonlinear model is developed to overcome the vagueness of the information. At the same time, fuzzy weight and stochastic demand are applied to enable the decision-maker to select right supplier. The model is illustrated by a numerical example. Key words: Fuzzy set theory, supplier selection, fuzzy weight, a supply chain.
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