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DOLAP 2010 - Towards Readable Layouts for Modeling Data Warehouses
1. Towards Readable Layouts for
Modeling Data Warehouses
Jesús Pardillo
University of Alicante, Spain
jesuspv@ua.es
www.jesuspardillo.com
Florian Mansmann
University of Konstanz, Germany
Florian.Mansmann@uni-konstanz.de
infovis.uni-konstanz.de/members/mansmann
2. 2J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Garrigós et al.
(ER’09)
3. 3J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Level Attributes
(Product)
Fact Measures
(Sale)
Fact Granularity
(Sale)
Dimension Hierarchies (Store)
Schema Dimensionality Dimension
Attributes
(Store)
4. 4J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
is more
readable than
Research Hypothesis
5. 5
Research Outline
‣ Materials:
✓ Viewpoints
✓ Graph layouts
✓ Readability measures
‣ Method:
✓ Expert Measurement
‣ Findings:
✓ Readability evaluation
✓ Readability by viewpoint
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
6. 6J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
is indeed more
readable than
Conclusion
7. 7
Research Outline
‣ Materials:
✓ Viewpoints
✓ Graph layouts
✓ Readability measures
‣ Method:
✓ Expert Measurement
‣ Findings:
✓ Readability evaluation
✓ Readability by viewpoint
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
8. 8
Attribution
of a Level
Granularity
of a Fact
Measurement
of a Fact
Attribution
of a Dimension
Dimensionality
Aggreg. Hierarchies
of a Dimension
● ● ● ● ●
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Garrigós et al. (ER’09)
9. 9
Attribution
of a Level
Granularity
of a Fact
Measurement
of a Fact
Attribution
of a Dimension
Dimensionality
Aggreg. Hierarchies
of a Dimension
● ● ● ● ●
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Garrigós et al. (ER’09)
10. 10
Attribution
of a Level
Granularity
of a Fact
Measurement
of a Fact
Attribution
of a Dimension
Dimensionality
Aggreg. Hierarchies
of a Dimension
● ● ● ● ●
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Garrigós et al. (ER’09)
11. 11
Attribution
of a Level
Granularity
of a Fact
Measurement
of a Fact
Attribution
of a Dimension
Dimensionality
Aggreg. Hierarchies
of a Dimension
● ● ● ● ●
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Garrigós et al. (ER’09)
12. 12
Attribution
of a Level
Granularity
of a Fact
Measurement
of a Fact
Attribution
of a Dimension
Dimensionality
Aggreg. Hierarchies
of a Dimension
● ● ● ● ●
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Garrigós et al. (ER’09)
13. 13
Attribution
of a Level
Granularity
of a Fact
Measurement
of a Fact
Attribution
of a Dimension
Dimensionality
Aggreg. Hierarchies
of a Dimension
● ● ● ● ●
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
Garrigós et al. (ER’09)
14. 14
Arc Diagram Cross-tab
+
+
+ +
+
StackMesh
Parallel
Co-ordinates
Radial
Tree Table
Tree
Graph Layouts
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
15. 15
Layouts by Viewpoint
attribution by level
dimensionality
attribution of a dimension
measurement of a fact
granularity of a fact
aggr. hierarchies
of a dimension
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
16. 16
‣ Continuity:
‣ Orthogonality:
‣ Proximity:
‣ Symmetry:
‣ Density:
‣ Edge Overlap:
‣ Fast Traversal:
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
ReadabilityMeasures
18. 18
Readability by Viewpoint
attribution by level
dimensionality
attribution of a dimension
measurement of a fact
granularity of a fact
aggr. hierarchies
of a dimension
J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
19. 19J. Pardillo & F. Mansmann: Towards Readable Layouts for Modeling Data Warehouses. DOLAP’10
is indeed more
readable than
Conclusion
