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中文摘要：
研究了在直觉模糊软矩阵环境下改进水平软集的群决策方法.首先利用直觉模糊软矩阵给出了在专家权重未知情况下的集成算法,并对λmid（E）-水平软集进行改进,提出了λnew（E）-水平软集；同时对λmed（E）-水平软集进行改进,提出了三均值水平软集.然后利用水平软集计算各对象的选择值,得出最优决策.最后,通过实例验证了决策方法的可行性和合理性.
英文摘要：
Group decision making method of improved level soft set under intuitionistic fuzzy soft matrix environment is studied. Firstly, giving an aggregation method of IFSM which the expert＇ s weight is unknown , and the λmed（E） level soft set is proposed based on the λmed（E） level soft set; meanwhile, three average level soft set is presented based on the λmed（E） level soft set. Then calculate the choice value of every alternatives by use of the level soft set to obtain the optimal decision. Finally, a practical example has been demonstrated the reasonability and feasibility of the methods.
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