Improve the basic education student status information system, to achieve national networking, build the underlying data of Shanghai basic education, to provide data support for decision-making.
完善基础教育学生学籍信息系统，实现全国联网，构筑上海基础教育底层数据，为决策提供数据支撑。
In the Decision Support System the application of Rough Set could analyze, infer to the incomplete data and pick-up useful character, simplify information processing, and get conclusion in the end.
应用粗集理论可以在决策支持系统中对不完备数据进行分析、推理，提取有用特征，简化信息处理，得出肯定结论。
Experimental results show the algorithm is effective. It can find different reductions of attribute in the information system and provide more information for decision support and data mining.
实验证明该算法是有效的，并能求解出信息系统中多组不同的最小约简，为决策支持和数据挖掘等提供更多信息。
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