In the end of the paper we get the conclusion, extension engineer theory and extension information analysis approach prepare basic theory for data mining and are good techniques of data mining.
最后本文得出的结论是，可拓工程方法和可拓信息分析方法为数据挖掘提供了更多的理论基础，同时也为数据挖掘提供了有效的挖掘工具和方法。
By using extension mappings, data lineage analysis can be performed on data flows external to Information Server.
通过使用扩展映射，就可以对Information Server外部的数据流执行数据沿袭分析。
In this paper, a decision analysis method based on extension of the rough sets is proposed to multi_attribute decision making problems with preferential and incomplete information.
针对有偏好信息但信息不完全的多属性决策问题，给出了一种基于拓展粗糙集的决策分析方法。
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