OntoRama: Browsing RDF Ontologies Using a Hyperbolic-Style Browser

  • Authors:
  • P. Eklund;N. Roberts;S. Green

  • Affiliations:
  • -;-;-

  • Venue:
  • CW '02 Proceedings of the First International Symposium on Cyber Worlds (CW'02)
  • Year:
  • 2002

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Abstract

This paper presents a Java-based hyperbolic-stylebrowser designed to render RDF files as structured onto-logicalmaps. The program was motivated by the need tobrowse the content of a web-accessible ontology server:WEBKB-2. The ontology server contains descriptions ofover 74,500 object types derived from the WORDNET 1.7lexical database and can be accessed using RDF syntax.Such a structure creates complications for hyperbolic-styledisplays. In WEBKB-2 there are 140 stable ontology linktypes and a hyperbolic display needs to filter and iconifythe view so different link relations can be distinguished inmulti-link views. Our browsing tool, ONTORAMA, is thereforemotivated by two possibly interfering aims: the first todisplay up to 10 times the number of nodes in a hyperbolic-styleview than using a conventional graphics display; secondly,to render the ontology with multiple links comprehensiblein that view.