Rough set theory is a new mathematical tool to deal with vagueness and Uncertainty problem after probability theory, fuzzy sets, mathematical theory of evidence.

粗糙集理论是继概率论、模糊集、证据理论之后的又一个处理不确定性问题的新型数学工具。

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Rough Set Theory is another mathematical tool used for dealing with fuzzy and uncertain knowledge besides Probability Theory, fuzzy Set Theory and Evidence Theory.

粗集理论是继概率论、模糊集、证据理论之后的又一种处理模糊和不确定性知识的数学工具。

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