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Published in:
2010 | OriginalPaper | Chapter
StarLion: Auto-configurable Layouts for Exploring Ontologies
Authors : Stamatis Zampetakis, Yannis Tzitzikas, Asterios Leonidis, Dimitris Kotzinos
Published in: The Semantic Web: Research and Applications
Publisher: Springer Berlin Heidelberg
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The visualization of ontologies is a challenging task especially if they are large. We will demonstrate
StarLion
, a system providing exploratory visualizations which enhance the user understanding.
StarLion
combines many of the existing visualization methods with some novel features for providing better 2D layouts. Specifically, one distinctive feature of
StarLion
is the provision of Star-like graphs of variable radius whose layout is derived by a Force Directed Placement algorithm (
FDPA
) specially adapted for RDF Schemas. This approach enables users to gradually explore and navigate through the entire ontology without overloading them.
StarLion
can also handle multiple namespaces, a very useful feature for assisting the understanding of interdependent ontologies. Another distinctive characteristic of
StarLion
is the provision of a novel method for configuring automatically the
FDPA
parameters based on layout quality metrics, and the provision of an interactive configuration method offered via an intuitive tool-bar.