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Improving Human-Semantic Web Interaction: The Rhizomer Experience

Improving Human-Semantic Web Interaction: The Rhizomer Experience. Roberto García and Rosa Gil GRIHO - Human Computer Interaction Research Group Universitat de Lleida, Spain. Table of Contents. Introduction Proposal Architecture Wiki Engine Rhizomer Guided tour Conclusions Future Work.

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Improving Human-Semantic Web Interaction: The Rhizomer Experience

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  1. Improving Human-Semantic Web Interaction:The Rhizomer Experience Roberto García and Rosa Gil GRIHO - Human Computer Interaction Research Group Universitat de Lleida, Spain

  2. Table of Contents • Introduction • Proposal • Architecture • Wiki Engine • Rhizomer • Guided tour • Conclusions • Future Work Improving Human-Semantic Web Interaction: The Rhizomer Experience —2/21

  3. Introduction • Scenario: semantic portal • Framework for community knowledge sharing • Non-expert users • User interaction not just consumption, also production • Follow Semantic Wiki style: • Facilitate production • Keep information organised Improving Human-Semantic Web Interaction: The Rhizomer Experience —3/21

  4. Introduction • However, most Semantic Wikis… • Mix human and machine-oriented content • Quite unusable notation for HTML content and/or semantic metadata [[Category:ResearchProject]] [[label:=Rhizomer]] [[homepage:=rhizomik.net/rhizomer]] • Require user aware of available classes, props,… • Difficult reuse of external data and ontologies • More usable approaches: PlatypusWiki, OntoWiki,… Improving Human-Semantic Web Interaction: The Rhizomer Experience —4/21

  5. Proposal • Focus on simplicity and ease of use: • Separate HTML content and semantic metadata • Simple wiki engine • WYSIWYG wiki user interface • Semantic metadata engine • Usable semantic metadata interaction • Common HTML interface, just the web browser Improving Human-Semantic Web Interaction: The Rhizomer Experience —5/21

  6. link link link # anchor link Architecture • Wiki Engine: manage HTML documents • Rhizomer: manage semantic metadata, about wiki docs or other resources RHIZOMER WIKI ENGINE URL URL URL URL Improving Human-Semantic Web Interaction: The Rhizomer Experience —6/21

  7. Wiki Engine • Simplicity: • Based on Java Servlets / JSPs / JavaScript • No database required • Store documents as HTML files • Ease of use: • FCKEditor, http://www.fckeditor.net • WYSIWYG interface, text processor like • Customisable user interface • E.g.: add custom special chars Improving Human-Semantic Web Interaction: The Rhizomer Experience —7/21

  8. Wiki Engine Improving Human-Semantic Web Interaction: The Rhizomer Experience —8/21

  9. Rhizomer • Simplicity: • Abstraction layer on metadata stores (Sesame, Jena,…). • REST interface • Implementation • Java Servlets • JSP edit search delete new GET PUT POST DEL Rhizomer MetadataStore Improving Human-Semantic Web Interaction: The Rhizomer Experience —9/21

  10. Rhizomer • Ease of use: • Facilitate discovering unknown metadata • SPARQL DESCRIBE for default queries • Web browser interface for semantic metadata • Graph browsing mechanism • Enable “self-explanatory” metadata RDF JavaScript <HTML/> <HTML/> SemFORMS Improving Human-Semantic Web Interaction: The Rhizomer Experience —10/21

  11. Guided Tour: query Improving Human-Semantic Web Interaction: The Rhizomer Experience —11/21

  12. Guided Tour: query swrc:Projectspecific properties GET Improving Human-Semantic Web Interaction: The Rhizomer Experience —12/21

  13. Guided Tour: store • Rhizomer servlet: GET  query • SPARQL metadata store • Jena, Sesame,… • DESCRIBE implementation • Concise Bounded Description + rdfs:labels for all selected resources • Query output also RDF Improving Human-Semantic Web Interaction: The Rhizomer Experience —13/21

  14. Guided Tour: store • DESCRIBE R2: build CBD(R2) = Fragment 2 Urdfs:labels label R2 Improving Human-Semantic Web Interaction: The Rhizomer Experience —14/21

  15. Guided Tour: response • Show results: • Visualisation and interaction: • XSLT: • RDF to HTML • RDF to HTML FORM • Other options: Fresnel Lenses, RDF Path,… • Use RDF labels for usability, xml:lang for multilanguage support. Improving Human-Semantic Web Interaction: The Rhizomer Experience —15/21

  16. Guided Tour: interaction view, RDF2HTML XSLT view,RDF2HTML XSLT Improving Human-Semantic Web Interaction: The Rhizomer Experience —16/21

  17. Guided Tour: interaction Improving Human-Semantic Web Interaction: The Rhizomer Experience —17/21

  18. Guided Tour: interaction • Submit semantic form: <form method=“PUT/POST” onSumbit=“buildMetadata”><input type=“text” name=“http://...w3.org/.../rdf-syntax-ns#ID” value=“http://rhizomik.net/rhizomer”/> <input type=“text” name=“http://...w3.org/.../rdf-syntax-ns#type” value=“http://swrc…org/ontology#SoftwareProject”/> <input type=“text” name=“http://...w3.org/.../rdf-schema#label”/ value=“Rhizomer”/> … </form> • PUT: add metadata fragment • POST: delete metadata fragment for ID and add new metadata <Subject,… Predicate,Object> Predicate,Object> Improving Human-Semantic Web Interaction: The Rhizomer Experience —18/21

  19. Conclusions • Usable framework (preliminary user tests) • Simple and flexible • Example: Semantic Media Portal Improving Human-Semantic Web Interaction: The Rhizomer Experience —19/21

  20. Future Work • AJAX to improve user interaction • Assisted metadata creation:available properties, property values,… • Specialised visualisation and interaction services • Map for geo-tagged resources, Timeline or Calendar for events,… • Deeper user testing Improving Human-Semantic Web Interaction: The Rhizomer Experience —20/21

  21. Thank you for your attentionMore at: http://rhizomik.net Contact rgarcia@diei.udl.esrosa.gil@diei.udl.es

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