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Rhizomer
“The Rhizomer Semantic Content Management System”
Roberto Garcia, Juan Manuel Gimeno, Ferran Perdrix, Rosa Gil, Marta Oliva
http://rhizomik.net
Ioan Toma
©www.sti-innsbruck.at
Copyright 2008 STI INNSBRUCK www.sti-innsbruck.at
Agenda
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Introduction
The Rhizomer platform
Use Case: S5T Project
Summary
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Introduction
• Difficult to intelligently manage information with current
CMSs/Wikis.
• Use Semantic Web technologies
• Semantic CMSs/Wikis don’t fully exploit them:
• Most semantic wikis focus on page annotation, limited
reasoning, no import...
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Rhizomer
• Platform for Semantic Content Management and Human-Semantic
Web Interaction
• Based on Web 2.0 technologies
• Client (AJAX) / Server (REST)
• Web 3.0 data model
• Semantic metadata store: RDF(OWL) / SPARQL
• Generic metadata browsing
• HTML + Javascript
• Object-Action Interaction Paradigm
• Semantic Web Services
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Rhizomer
• Server part:
• REST interface over the repository
• Jena, Sesame, …
• GET: SPARQL end-point
• PUT/POST/DELETE
• RDF metadata management
• Semantic Web Services
• OWL-S descriptions
• Service Profile: Process, hasInput, hasOutput
• REST adapters for
• Javascrip APIs (e.g. Google Maps), SOAP, …
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Rhizomer
• Client part:
• AJAX (asynchronously send queries and metadata)
• RDF/XML - XSLT -> HTML (browsing)
• “Semantic” forms (edition)
• RDF/XML - XSLT -> FORM – Javascript -> RDF
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S5T Project
• S5T Spanish research project (TIN2005-06885)
• Scalable Semantic personalized Search of Spoken and written
contents on the Semantic Web
• Application in the Segre media group
• Newspaper, TV, radio and web site
• Internal use (media house): facilitate content production, history
tracking, contextualisation
• External use (web users): advanced services (e.g. news
personalisation, semantic podcasts, …)
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S5T Project
• Semantic annotation of audiovisual content
• voice -> text (keywords) -> semantic annotations
• Rhizomer: user interface for browsing/interacting with
content and associated knowledge
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S5T Project: Query
• Queries:
• Metadata
• Content (transcript)
• Words
• Concepts
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S5T Project: Store
• REST interface over semantic repository e.g. Jena, Sesame
• GET -> SPARQL endpoint, PUT/POST/DELETE
• RDF metadata management
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S5T Project: Browse
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S5T Project: Editor
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S5T Project: Interaction
• Given a resource (object)… determine available services
(actions)
• Resource description: type, properties, values, …
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S5T Project: Service descriptions
• Service descriptions:
• ID: Service Adapter URL
• hasInput: an OWL Class
• Service applicable to any resource classified in this
class
• hasOutput: output content type
• text/html, application/rdf+xml, …
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Conclusions
• Content Management System based on semantic metadata
• Framework for Human-Semantic Web Interaction
• Flexible
• Projects: S5T, Rhizomik, …
• Extensible
• Plugins for visualisation, interaction and metadata
extraction
• Usable
• Preliminary usability tests
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