From web data to visualization via ontology mapping

  • Authors:
  • O. Gilson;N. Silva;P. W. Grant;M. Chen

  • Affiliations:
  • Department of Computer Science, Swansea University, UK;School of Engineering - Polytechnic of Porto, Portugal;Department of Computer Science, Swansea University, UK;Department of Computer Science, Swansea University, UK

  • Venue:
  • EuroVis'08 Proceedings of the 10th Joint Eurographics / IEEE - VGTC conference on Visualization
  • Year:
  • 2008

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Abstract

In this paper, we propose a novel approach for automatic generation of visualizations from domain-specific data available on the web. We describe a general system pipeline that combines ontology mapping and probabilistic reasoning techniques. With this approach, a web page is first mapped to a Domain Ontology, which stores the semantics of a specific subject domain (e.g., music charts). The Domain Ontology is then mapped to one or more Visual Representation Ontologies, each of which captures the semantics of a visualization style (e.g., tree maps). To enable the mapping between these two ontologies, we establish a Semantic Bridging Ontology, which specifies the appropriateness of each semantic bridge. Finally each Visual Representation Ontology is mapped to a visualization using an external visualization toolkit. Using this approach, we have developed a prototype software tool, SemViz, as a realisation of this approach. By interfacing its Visual Representation Ontologies with public domain software such as ILOG Discovery and Prefuse, SemViz is able to generate appropriate visualizations automatically from a large collection of popular web pages for music charts without prior knowledge of these web pages.