basic concepts in set theory 集合论基本概念
This paper discusses a new intelligent control method called rough control, and presents the basic concepts of rough set theory.
本文讨论了一种新型的智能控制方法—粗糙控制，介绍了粗糙集合理论的基本概念。
Firstly the article introduces the basic theory and method of financial engineering briefly to create a set of general rules on financial product analysis and investment portfolio.
报告首先简要介绍金融工程的基本原理与方法，形成金融工程实施过程中采用的金融产品分析和金融产品组合的一般性规则。
The equivalence relation is the basic Concept of the rough set theory.
等价关系是粗集理论中的一个重要概念。
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