A Platform for Object-Action Semantic Web Interaction

1. A Platform for Object-Action Semantic Web Interaction Roberto García, Juan Manuel Gimeno, Ferran Perdrix*, Rosa Gil, Marta Oliva HCI and Data Integration Research Group Universitat de Lleida, Spain *Segre Media, Spain

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

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

4. Introduction • The Semantic Web is here... ...but difficult take off in the “real world” • Problem: “it is complicated to use it” [1] • Even for researchers/advanced users [2] • No just browsing, also edition (Wiki-like) [1] Shadbolt, Hall, Berners-Lee. The Semantic Web Revisited. Intelligent Systems 21(3), 2006 [2] Heath, Domingue, Shabajee. User interaction and uptake challenges to successfully deploying Semantic Web technologies. 3rd Semantic Web User Interaction Workshop, 2006 Rhizomer Semantic Content Management System

5. Introducción • Human-Computer Interaction ↑Usability • User tasks analysis: • Web: reduced set and clearly defined • Web 2.0, 3.0: wider set, still to define • Action-Object Paradigm • Hierarchical actions menus • Select action (e.g. “Open”) and the object (e.g. “File”) • Reduced usability in heterogeneous object domains Rhizomer Semantic Content Management System

6. Introduction • Semantic Web • Facilitates data integration • Heterogeneous objects • Look for a more appropriate interaction paradigm… • Object-Action Paradigm • Appropriate for heterogeneous domains • Select object, then from available object actions • Cognitively, easier to organise/identify objects • Semantic Web : • Ontologies organise objects, restrict available actions Rhizomer Semantic Content Management System

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

8. 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 Semantic Content Management System

9. Rhizomer edit search delete new GET PUT POST DEL • Server part: • REST interface over 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 MetadataStore Rhizomer Semantic Content Management System

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

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

12. 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,…) Rhizomer Semantic Content Management System

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

14. S5T Project: query s5t:Audiospecific properties P rdfs:domain s5t:Audio or s5t:Audio owl:Restriction on P (or superclass) • Queries: • Metadata • Content (transcript) • Words • Concepts GET <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> ?query= DESCRIBE ?s WHERE { ?s dc:title ?y0; s5t:genre ?y1. FILTER regex(?y0, "…") && ?y1=<…./SubjectsOnto# 11000000> } Rhizomer Semantic Content Management System

15. 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 Rhizomer Semantic Content Management System

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

17. S5T Project: browse <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> RDF2HTML GET  RDF2HTML Rhizomer Semantic Content Management System

18. S5T Project: edition Rhizomer Semantic Content Management System

19. 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 <Subject,… Predicate,Object> Predicate,Object> Rhizomer Semantic Content Management System

20. 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,… • … Rhizomer Semantic Content Management System

21. S5T Project: interaction • Given a resource (object)…determine available services (actions) • Resource description: type, properties, values,… Rhizomer Semantic Content Management System

22. S5T Project: interaction • 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

23. S5T Project: interaction • 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

24. S5T Project: interaction 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: describe resources whose transcript contains keyword… Browse Term: describe the concept annotating the keyword Search Keyword Browse Term Rhizomer Semantic Content Management System

25. S5T Project: interaction • 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. Rhizomer Semantic Content Management System

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

27. 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 Rhizomer Semantic Content Management System

28. Future Work • Assisted metadata edition • Properties and values recommended based on available ontologies • Create basic services set • Map • Time line • Calendar • Plot… • Complete usability test Rhizomer Semantic Content Management System

29. Thank you for your attentionMore: http://rhizomik.net Roberto García http://rhizomik.net/~roberto