The benefits of ETL and data warehousing can be diminished by high costs, slow turn-around time, and incomplete sets of information in data sources.
由于高费用、较慢的周转周期以及数据源中不完整的信息集而使etl和数据仓库的优势大打折扣。
This paper brought forward a data packing method of incomplete information system based on rough sets and grey system theory.
提出了一种基于粗糙集的不完备信息系统数据填补方法。
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