Philipp Heim

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Are you interested in how things are related with each other? The RelFinder helps to get an overview: It extracts and visualizes relationships between objects in RDF data and makes these relationships interactively explorable.

Please find more information about the RelFinder at:


Complex semantic querying made easy! gFacet supports faceted exploration of RDF data by representing facets as nodes in a graph visualization. The facets can be interactively added and removed in order to produce individual search interfaces.

Please find more information about gFacet at:


Do you want to analyse trends and correlations in RDF data? SemLens provides a visual interface that combines scatter plots and semantic lenses. The scatter plots offers a global visualization that can be locally explored with the semantic lenses.

Please find more information about SemLens at:


tFacet applies known interaction concepts to allow hierarchical faceted exploration of RDF data. The aim is to facilitate ordinary users to formulate semantically unambiguous queries so as to support the fast and precise access to information.

Please find more information about tFacet at:


Common graph visualizations tend to produce edge crossings and overlaps when used to display resource collections that are highly interrelated via shared properties. With ChainGraph we present a new approach that visualizes resources and their shared properties in chains to prevent dense graphs and to better support the exploration of relationships.

Please find more information about the ChainGraph in our publications:

ChainGraph: A New Approach to Visualize Shared Properties in Resource Collections.
In: K. Tochtermann and H. Maurer, editors, Proceedings of the 9th International Conference on Knowledge Management and Knowledge Technologies (I-KNOW 08), pages 106-114. J.UCS, Graz, 2009.
Philipp Heim and Steffen Lohmann.
[doi]  [BibTeX] 
Exploring Relationships between Annotated Images with the ChainGraph Visualization.
In: Proceedings of the 4th International Conference on Semantic and Digital Media Technologies (SAMT 2009), pages 16-27. Springer, Berlin, Heidelberg, 2009.
Steffen Lohmann, Philipp Heim, Lena Tetzlaff, Thomas Ertl and Jürgen Ziegler.
[doi]  [BibTeX] 


Examining all relevant information can be very demanding and time consuming. Thus, methods and tools are needed that assist in the integration of this heterogeneous and distributed information. The InteractiveExtractor is such a tool that aims at visually supporting the integration of distributed information into semantic structures.

Please find more information about the InteractiveExtractor in our publication:

InteractiveExtractor: Durchgängige Unterstützung bei der Extraktion von anforderungsrelevanten Informationen.
In: Zweiter Workshop Nutzerinteraktion im Social Semantic Web, pages 81-87. 2009.
Philipp Heim, Timo Stegemann, Jürgen Ziegler, Steffen Lohmann, Haiko Cyriaks and Horst Stolz.
[doi]  [BibTeX]