不能最小化属性值对。

Attribute value pairs cannot be minimized.

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不允许单独属性（也称为最小化的属性）。

No stand alone attributes (also known as minimized attributes) are allowed.

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包括理论的提出，一些基本的概念，数据的约简，知识表达系统，属性的约简，决策逻辑和决策规则最小化等。

It includes the proposing of the theory, some relevant fundamental concepts, the reduction of data and attributes, KRS, decision analysis, and the reduction of decision rules.

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