...方向之一,目前有关粒度计算的理论与方法,主要有3个：词计算理论( Theory of Works Computing)、粗糙集理论(Theory of Rough Set)、商空间理论(Theory of Quotient Space). 粒度就是取不同大小的对象.
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Theory of Rough Set is a softly calculating method based on set theory, which recognizes that knowledge is a categorised ability that mankind and other species inherented and extend the concept of knowledge reduce relative reduce . dependence of knowledge.
粗糙集理论是一种建立在集合论基础上的软计算办法，它认为知识是人类和其他物种所固有的分类能力，由此扩展出知识约简、相对约简、知识的依赖性等概念。
参考来源 - 专家系统中知识获取的“粗糙集”方法·2,447,543篇论文数据，部分数据来源于NoteExpress
In the theory of rough set, attribute reduction of decision table was an important research subject.
在粗糙集理论中，决策表的属性约简是一个非常重要的研究课题。
Besides, this thesis makes a simple discussion on using the theory of Rough Set to reduce attribute, in order to simplify the complexity of the algorithm.
另外，论文还就数据挖掘过程中应用粗糙集进行属性约简以简化算法复杂度做了一定的探讨。
Moreover, the product coding and configuration system based on information classifying was developed by using the theory of Rough Set to deal with uncertain customer demand.
进而，据此开发了一个基于信息分类的产品编码与配置系统，并提出了利用粗糙集的相关理论与方法处理配置过程中的客户模糊需求信息的方法。
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