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Exploring OLAP aggregates with hierarchical visualization techniques (2007)
| Content Provider | CiteSeerX |
|---|---|
| Author | Mansmann, Svetlana Scholl, Marc H. |
| Description | This paper presents an approach to exploring multidimen-sional data cubes with hierarchical visualization techniques. Analysts interact with data in a predominantly “drill-down” fashion, i.e. from coarse grained aggregates towards the de-sired level of detail. We suggest that visual hierarchies are adequate for mapping the multiscale nature of decomposi-tion as they preserve the results of the entire interaction. We introduce a class of visual structures called Enhanced Decomposition Tree. Every tree level is created by a disag-gregation step along a chosen dimension, the nodes contain the corresponding sub-aggregates arranged into a chart and the edges are labeled with their dimensional values. Various layouts are proposed to account for different analysis tasks. Data cubes are queried using a schema-based browser which presents dimensions by the hierarchies of their gran-ularity levels, thus offering an efficient way of generating hierarchical visualizations. Multiple data cubes may be ex-plored in parallel along their shared dimensions. The power of our approach is exemplified using a real-world study from the domain of academic administration. |
| File Format | |
| Language | English |
| Publisher Date | 2007-01-01 |
| Publisher Institution | SAC 2007: Proceedings of 22 nd Annual ACM Symposium on Applied Computing, Multimedia, & Visualization Track (pp. 10671073). Seoul, Korea |
| Access Restriction | Open |
| Subject Keyword | Enhanced Decomposition Tree Disag-gregation Step Hierarchical Visualization Technique Real-world Study Olap Aggregate Drill-down Fashion Different Analysis Task Data Cube Every Tree Level Visual Hierarchy Efficient Way Multidimen-sional Data Cube Visual Structure Hierarchical Visualization Corresponding Sub-aggregates Dimensional Value Multiple Data Cube Various Layout Academic Administration Entire Interaction Schema-based Browser Gran-ularity Level Multiscale Nature Chosen Dimension De-sired Level |
| Content Type | Text |
| Resource Type | Article |
