Abstract: By adding a new attribute parameter called nonmember ship function on fuzzy set, intuitionistic fuzzy set becomes a tool which can describe the “neither-nor” fuzzy conception. In order to improve the accuracy of decision-making, this text combines soft sets with intuitionistic fuzzy sets, constructs a new mathematical model, namely intuitionistic fuzzy soft sets, and the properties are discussed.

Key words: intuitionistic fuzzy sets, rough sets, soft sets, fuzzy soft sets

摘要： 直觉模糊集是在模糊集上增加了一个新的属性参数：非隶属度函数，成为描述“非此非彼”的“模糊概念”的工具。为了提高决策的精确性，将软集与直觉模糊集相结合，构造了一种新的数学模型，即直觉模糊软集，对其性质进行了一些讨论。

关键词: 直觉模糊集, 粗糙集, 软集, 模糊软集