fuzzy sets

例句：

1. 1. In data analysis, fuzzy sets are used to handle uncertain and imprecise information.
   在数据分析中，模糊集合用于处理不确定和不精确的信息。
2. 2. The fuzzy set theory is a useful tool for dealing with uncertainty in decision-making.
   模糊集合理论是处理决策不确定性的一种有用工具。
3. 3.The fuzzy set method is often used in pattern recognition and machine learning.
   模糊集合方法常用于模式识别和机器学习。