How does declaring the hierarchy and level in SSAS help to improve MDX Query performance?

如何声明和水平层次SSAS有助于提高MD X查询性能？

Because of hierarchical requirement of situation assessment, we realized the securities situation assessment system (SSAS), and constructed a securities data mining method ontology database.

鉴于态势估计的层次化要求，本文使用分组多层黑板体系结构实现了证券态势估计系统(SSAS)，并且建立了证券数据挖掘方法本体库。