Automating the design of graphical presentations of relational information
ACM Transactions on Graphics (TOG)
Feature Extraction and Iconic Visualization
IEEE Transactions on Visualization and Computer Graphics
Graph Visualization and Navigation in Information Visualization: A Survey
IEEE Transactions on Visualization and Computer Graphics
Iconic Techniques for Feature Visualization
VIS '95 Proceedings of the 6th conference on Visualization '95
Graphical Encoding for Information Visualization: An Empirical Study
INFOVIS '02 Proceedings of the IEEE Symposium on Information Visualization (InfoVis'02)
Information Visualization: Perception for Design
Information Visualization: Perception for Design
An Interactive 3D Integration of Parallel Coordinates and Star Glyphs
INFOVIS '05 Proceedings of the Proceedings of the 2005 IEEE Symposium on Information Visualization
Visual exploration of multivariate graphs
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Evaluating CSCL log files by social network analysis
CSCL '99 Proceedings of the 1999 conference on Computer support for collaborative learning
Task taxonomy for graph visualization
Proceedings of the 2006 AVI workshop on BEyond time and errors: novel evaluation methods for information visualization
Visual Analysis of Large Heterogeneous Social Networks by Semantic and Structural Abstraction
IEEE Transactions on Visualization and Computer Graphics
Network Visualization by Semantic Substrates
IEEE Transactions on Visualization and Computer Graphics
Information Visualization: Beyond the Horizon
Information Visualization: Beyond the Horizon
Visual Mining of Multi-Modal Social Networks at Different Abstraction Levels
IV '07 Proceedings of the 11th International Conference Information Visualization
Melange: space folding for multi-focus interaction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Hierarchical Aggregation for Information Visualization: Overview, Techniques, and Design Guidelines
IEEE Transactions on Visualization and Computer Graphics
Grouse: feature-based, steerable graph hierarchy exploration
EUROVIS'07 Proceedings of the 9th Joint Eurographics / IEEE VGTC conference on Visualization
Visual inspection of multivariate graphs
EuroVis'08 Proceedings of the 10th Joint Eurographics / IEEE - VGTC conference on Visualization
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Graph analysis by data visualization involves achieving a series of topology-based tasks. When the graph data belongs to a data domain that contains multiple node and link types, as in the case of semantic graphs, topology-based tasks become more challenging. To reduce visual complexity in semantic graphs, we propose an approach which is based on applying relational operations such as selecting and joining nodes of different types. We use node aggregation to reflect the relational operations to the graph. We introduce glyphs for representing aggregated nodes. Using glyphs lets us encode connectivity information of multiple nodes with a single glyph. We also use visual parameters of the glyph to encode node attributes or type specific information. Rather than doing the operations in the data abstraction layer and presenting the user with the resulting visualization, we propose an interactive approach where the user can iteratively apply the relational operations directly on the visualization. We present the efficiency of our method by the results of a usability study that includes a case study on a subset of the International Movie Database. The results of the controlled experiment in our usability study indicate a statistically significant contribution in reducing the completion time of the evaluation tasks.