Semantic Web Services: A RESTful Approach

Nov 19, 2009Download as PPTX, PDF7 likes4,621 views

Presentation given at the IADIS International Conference WWW/Internet 2009, in Rome, Italy. November/09. More info: http://otaviofff.github.io/restful-grounding/

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

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

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

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

Web ServicesWeb-based componentsInteroperable communication over networksClassification:RPCRESTful5

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

RESTful Web Services / ConceptsResourceRepresentationUniform IdentifierUnified InterfaceExecution Scope7

RESTful Web Services / PrinciplesAddressabilityStatelessnessConnectedness8

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

Semantic Web ServicesOWL-S: Upper ontology for services10

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

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

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

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

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

This document discusses the semantic web and semantic web services. It begins by describing classical web services and the vision of bringing semantics to both the web and web services. It then discusses existing standards for semantic web services interaction like OWL-S and WSMO. It proposes a new approach of developing a meta-model for semantic web services that defines ontologies, interfaces, operations, messages, and service providers. It provides an example of applying this meta-model to the CongoBuy book buying company. The goal is to formally represent different aspects of semantic web services to enable their automated discovery, composition and invocation.

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Semantic Web Services: A RESTful Approach

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

11. 11

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

13. 13

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/

Semantic Web Services: A RESTful Approach

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