Thirdly, using properties of M partial relations and nontrivial attribute implication in theories of FCA, semantic meaning of roll-up and drill-down among data cells is realized.
第三,利用M偏序关系和非平凡的属性蕴含,实现数据立方体单元之间的上卷和下钻语义操作。
参考来源 - 高性能数据立方体及其语义研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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