Hierarchical Multidimensional Modelling in the Concept-Oriented Data Model

14th USENIX Security Symposium

Alexandr Savinov

Others  :  http://CEUR-WS.org/Vol-162/paper11.pdf
PID  :  50487

来源: CEUR

【 摘 要 】

In the paper the concept-oriented data model (COM) is described from the point of view of its hierarchical and multidimensional properties. Themodel consists of two levels: syntactic and semantic. Concepts are combinations of superconcepts while items are combinations of superitems. It is described how this model can be interpreted as a hierarchical coordinate system.Two operations of projection and de-projection are used in the mechanism ofaccess path. Grouping and aggregation with roll up and drill down are implemented via multidimensional de-projection. The described approach can be applied to very different problems for multidimensional modelling including database systems, online analytical processing, knowledge based systems, ontologies,complex categorizations, knowledge sharing and semantics web.