Especially, FAHP is based on fuzzy set theory.

特别是模糊层次分析法，它是基于模糊集合理论的。

The problem is akin to what happened in early set theory.

这个问题类似早期集合论发生的情况。

In the latest sports and fitness based on set theory.

在对运动健身的最新理论阐述的基础上。

Rough set theory is the tool to solve those problems.

粗集理论由于其自身的特点恰好能够解决这三个问题。

Attribute reduction is a research focus in rough set theory.

属性约简是粗糙集理论中的一个研究重点。