In this paper, a facility site selectionalgorithm is proposed. The algorithm based on the concepts of fuzzy set theory and the hierarchicalstructure analysis to aggregate decision-makers'linguisticassessments about criteria weightings and the suitability of facility sites versus various selection criteria to obtain fuzzy suitability indices. Then rank the suitability ratings to determine the best facility site selection. By utilizing this decision algorithm, the decision-makers' fuzzy assessments with various rating attitudes and the trade-off among various selection criteria can be taken into account in the aggregation process to asssure more convincing and accurate decision-making.

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