【摘要】 引入了高阶模糊集与半模糊树的概念，并给出了二者之间的关系．探讨了高阶模糊集的运算及模糊度的刻划问题，得到了与通常模糊集相类似的结果．更多还原

【Abstract】 The concepts of high-order Fuzzy set (HFS) and semi-Fuzzy tree (SFT) are introduced, and the relationship of HFS and SFT are established, the operations of HFS and the description of the degree of indishnctness of HFS are discussed and the same results are gotten as a general Fuzzy set.更多还原