The main contents include the approximation set, decision systems, data preprocessing and attribute reduction and so on. It is a effective method of dealing with incomplete, inaccurate data.
其主要内容包括近似集、决策系统、数据预处理以及属性约简等等，是一种处理不完整，不精确数据的有效方法。
The classical rough set theory based on complete decision information systems is greatly restricted in incomplete decision information systems.
决策信息系统分解作为一种数据转换方法，对于处理数据的海量性和复杂性，提高分析效率和质量有积极的作用。
The classical rough set theory based on complete decision information systems is greatly restricted in incomplete decision information systems.
决策信息系统分解作为一种数据转换方法，对于处理数据的海量性和复杂性，提高分析效率和质量有积极的作用。
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