The document discusses a proposal to integrate RESTful web services into the semantic web to enhance the adoption of semantic technologies. It outlines key principles of RESTful and semantic web services, including their interoperability and service descriptions using WADL and OWL-S. The authors present a 'restfulgrounding ontology' to illustrate the proposed mapping and coexistence between OWL-S and WADL.

1. IADIS International Conference WWW/INTERNET 2009Rome, Italy20/11/2009Semantic Web ServicesA RESTful ApproachOtávio Freitas Ferreira FilhoMaria Alice Grigas Varella FerreiraUniversity of São PauloPolytechnic School

2. TopicsObjectiveWeb 2.0Web ServicesRESTful Web ServicesSemantic Web ServicesRESTful Semantic Web ServicesThe RESTfulGrounding OntologyConclusions2

3. ObjectiveTo promote the inclusion of RESTful Web services powering the Web 2.0 into the semantic world, potentially speeding up the adoption of the Semantic Web as a whole3

4. Web 2.0Collaborative, social applicationsContent consumption and, mainly, productionNetwork effectsWeb services for data extraction and reuse4

5. Web ServicesWeb-based componentsInteroperable communication over networksClassification:RPCRESTful5

6. RESTful Web ServicesREST: architectural style for distributed systemsRESTful: REST + HTTPSyntactic description: WADL6

7. RESTful Web Services / ConceptsResourceRepresentationUniform IdentifierUnified InterfaceExecution Scope7

8. RESTful Web Services / PrinciplesAddressabilityStatelessnessConnectedness8

9. Semantic Web ServicesSemantic layer for automated service discovery, composition, monitoring, and executionOffer both syntactic and semantic descriptions9

10. Semantic Web ServicesOWL-S: Upper ontology for services10

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12. RESTful Semantic Web ServicesFollow the addressability principleFollow the statelessness principleFollow the connectedness principleSupport the unified interface (HTTP)Offer syntactic description (WADL)Offer semantic description (OWL-S)12

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14. The RESTfulGrounding Ontology14

15. The RESTfulGrounding Ontology01 <owl:Class rdf:ID="WadlGrounding">02 <rdfs:subClassOf rdf:resource="&grounding;#Grounding"/>03 <rdfs:subClassOf> 04 <owl:Restriction> 05 <owl:onProperty 06 rdf:resource="&grounding;#hasAtomicProcessGrounding"/>07 <owl:allValuesFrom 08 rdf:resource="#WadlAtomicProcessGrounding"/> 09 </owl:Restriction> 10 </rdfs:subClassOf> 11 </owl:Class> 15

16. The RESTfulGrounding Ontology01 <owl:Class rdf:ID="WadlAtomicProcessGrounding">02 <rdfs:subClassOf rdf:resource="&grounding;#AtomicProcessGrounding"/>03 <rdfs:subClassOf> 04 <owl:Restriction> 05 <owl:onProperty rdf:resource="#wadlResourceMethod"/> 06 <owl:cardinality rdf:datatype="&xsd;#nonNegativeInteger">107 </owl:cardinality> 08 </owl:Restriction> 09 </rdfs:subClassOf> 10 </owl:Class>16

17. ConclusionsProposed mapping is possible: OWL-S/WADLCoexistence of mappings also possible17

18. ThankYou!18Graziehttp://FullSemanticWeb.com/