The Rhizomer Semantic Content Management System

Rhizomer Semantic Content Management System Roberto García, Juan Manuel Gimeno, Ferran Perdrix*, Rosa Gil, Marta Oliva HCI and Data Integration Research Group Universitat de Lleida, Spain *Segre Media, Spain

Contents
Introduction
The Rhizomer Platform
Use Case: S5T Project
Conclusions & Future Work
Rhizomer Semantic Content Management System

Introduction
Difficult to manage Information Architecture 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...
Drupal RDF Module a Drupal extension, though Drupal 7 based on SWT [1]
[1] Buytaert, D.: DrupalCon Boston 2008: State of Drupal presentation. http://buytaert.net/files/state-of-drupal-2008-boston.pdf

Contents
Introduction

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

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
Javascript APIs (e.g. Google Maps), SOAP,…
Rhizomer Semantic Content Management System Metadata Store Rhizomer GET PUT POST DEL search new edit delete

Rhizomer
Client part:
AJAX (asynchronously send queries and metadata)
RDF/XML ─ XSLT  HTML (browsing)
“ Semantic” forms (edition)
RDF/XML ─ XSLT  FORM ─ Javascript  RDF
Rhizomer Semantic Content Management System RDF <HTML/> <HTML/> SemFORMS JavaScript

Contents
Introduction

S5T Project
S5T Spanish research project ( TIN2005-06885 )
Scaleable Semantic personalised 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,…)

S5T Project
Semantic annotation of audiovisual content
voice  text (keywords)  semantic annotations
Rhizomer : user interface for browsing/interacting with content and associated knowledge

S5T Project: query Rhizomer Semantic Content Management System
Queries:
Metadata
Content (transcript)
Words
Concepts
GET s5t:Audio specific properties P rdfs:domain s5t:Audio or s5t:Audio owl:Restriction on P (or superclass) ?query= DESCRIBE ?s WHERE { ?s dc:title ?y0; s5t:genre ?y1. FILTER regex(?y0, "…") && ?y1=<…./SubjectsOnto# 11000000> } <form method=“GET” onSumbit=“formToSPARQL”> <input type=“text” name= “ http://purl.org/dc/elements/1.1/title”/> <input type=“text” name= “ http://purl.org/dc/elements/1.1/date”/> … </form>

S5T Project: store
GET  SPARQL endpoint
Metadata store
Jena, Sesame,…
DESCRIBE queries by default. Facilitate:
Browse heterogeneous metadata
Without a priori knowledge
DESCRIBE implementation
Concise Bounded Description + rdfs:labels for all selected resources
Result: RDF/XML

S5T Project: store
DESCRIBE http://rhizomik.net/~rosa : CBD( … ~rosa ) = Fragment A U rdfs:labels
Rhizomer Semantic Content Management System Fragment A

S5T Project: browse Rhizomer Semantic Content Management System RDF2HTML GET  RDF2HTML <s5t:Audio rdf:about=" http://www.segre.com/audio/20070323-bm.mp3 "> <dc:title>Butlletí Migdia</dc:title> <dc:date>2007-03-23</dc:date> <s5t:genre rdf:resource="&srs;11000000"/> <s5t:transcriptResource> http://www.segre.com/audio/20070323-bm.xml </s5t:transcriptResource> </srt:Audio> http://www.segre.com/ audio/ 20070323-bm.mp3 a Audio title Butlletí Migdia date 2007-03-23 genre politics transcript http://www.segre.com/audio/20070323-bm.xml Referrers http://rhizomik.net/.../NewsCodes-SubjectsOnto#11000000 a Subject label politics description Local, regional, national and international exercise of power, or struggle for power, and the relationships between governing bodies and states. Referrers

S5T Project: edition Rhizomer Semantic Content Management System edit – del – new http://www.segre.com/ audio/ 20070323-bm.mp3 a Audio title Butlletí Migdia date 2007-03-23 genre politics transcript http://www.segre.com/audio/20070323-bm.xml Referrers

S5T Project: edition
Semantic form:
<form method=“ PUT/POST ” onSumbit=“formToNTriples”> <input type=“text” name=“ http:// ...w3.org/.../rdf-syntax-ns# ID ” value=“ http://www.segre.com/audio/20070323-bm.mp3 ”/>
<input type=“text” name=“http:// ...w3.org/.../rdf-syntax-ns# type ” value=“ http:// rhizomik.net/.../s5t.owl# Audio ” />
<input type=“text” name=“http:// rhizomik.net/.../s5t.owl# genre ”/ value=“ http://.../NewsCodes-SubjectsOnto#11000000 ”/ > …
</form>
PUT : description for new resource
POST : replace resource description
Rhizomer Semantic Content Management System <Subject,… Predicate,Object> Predicate,Object>

S5T Project: uploading
Semantically annotate uploaded content (facilitate metadata creation)
Content-type specific metadata extraction plugins
Audio: text -to-speech
Text: keyword detection, disambiguation
OpenCalais, Freeling,…: named entities
Photo: EXIFtoRDF,…
…

S5T Project: interaction
Given a resource (object)… determine available services (actions)
Resource description: type, properties, values,…
Rhizomer Semantic Content Management System http://www.segre.com/ audio/ 20070323-bm.mp3 a Audio title Butlletí Migdia date 2007-03-23 genre politics transcript http://www.segre.com/audio/20070323-bm.xml Referrers

Services 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,…
Rhizomer Semantic Content Management System http://rhizomik.net/services/play a Process label Play hasInput http://rhizomik.net/.../s5t.owl#Audio hasOutput text/html Referrers

For each resource:
Processes s.t. resource rdf:type hasInput Class
Call : REST PUT/POST RDF resource
Adapter: service invocation (Javascript, SOAP,…)
Rhizomer Semantic Content Management System http://www.segre.com/ audio/ 20070323-bm.mp3 a Audio title Butlletí Migdia date 2007-03-23 genre politics transcript http://www.segre.com/audio/20070323-bm.xml Play Referrers

S5T Project: interaction Rhizomer Semantic Content Management System Butlletí Migdia (23/03/2007) La mobilització en contra dels transgènics i en favor de Josep Pàmies també ha servit per introduir altres reclamacions. En aquest cas, alguns dels col·lectius de la lluita contra aquests cultius demanen que la Universitat de Lleida rebi una especialització en Agricultura Ecològica . Asseguren que serien uns estudis pioners que servirien al centre per recuperar prestigi. Search Keyword Browse Term Search Keyword : describe resources whose transcript contains keyword… Browse Term : describe the concept annotating the keyword http://www.segre.com/ audio/ 20070323-bm.mp3 a Audio title Butlletí Migdia date 2007-03-23 genre politics transcript http://www.segre.com/audio/20070323-bm.xml Play Referrers http://www.udl.cat a University label Universitat de Lleida lat 41.37 long 0.37 Map Referrers

Map any resource with lat/long:
<process:Process rdf:about=" http://rhizomik.net/services/map "> <rdfs:label> map </rdfs:label> <process:hasInput> <owl:Class rdf:ID=" GeolocatedEntity "> <owl:intersectionOf rdf:parseType="Collection"> <owl: Restriction > <owl: onProperty rdf:resource="&pos; lat "/> <owl: minCardinality > 1 </owl:minCardinality> </owl:Restriction> <owl: Restriction > <owl: onProperty rdf:resource="&pos; long "/> <owl: minCardinality > 1 </owl:minCardinality> </owl:Restriction> </owl:intersectionOf> </owl:Class> </process:hasInput> <process:hasOutput>text/html</process:hasOutput> </process:Process>
Service Adapter includes GoogleMap Javascript
The same for events (Timeline, Calendar,…), etc.

Contents
Introduction

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

Future Work
Integrate S5T project interface
Assisted metadata edition
Properties and values recommended based on available ontologies
Create basic services set
Map
Time line
Calendar
Plot…
Complete usability test

Thank you for your attention More: http:// rhizomik.net Roberto García http://rhizomik.net/~roberto

The Rhizomer Semantic Content Management System

by rogargon on Sep 25, 2008

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