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How to use fuzzy informationin hierarchical analysis is to be discussed in this paper.. We use R -fuzzy sets instead of exact ratio. In order to reduce the calculation, the new concepts and operators are defined. We can see that the multiple expert's judges can be summarized in the R-fuzzy sets, and also it can reduce the calculation process. kpumerical example is given and the summary which compairs with previous researth 'is also made in the paper.doi:10.13033/isahp.y1988.040 fatcat:yd6o2blc6bgyhnw43ueo3v5tom