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Semantic Web Service Annotation

Michele Filannino
Michele Filannino
1 of 23
Web Service Semantic Annotation SWAP Group - Dip. Informatica di Bari
Outline Standard per lannotazione semantica SAWSDL: Semantic Annotations for WSDL and XML Schema SA-REST: Semantic Annotations for REST Tabella comparativa Architettura Scenario duso Mockup Sviluppi futuri 2
Standard per lannotazione semantica
Semantic Annotations for WSDL 4 and XML Schema [SAWSDL] Annotazione semantica di Web Service descritti tramite WSDL Insieme di attributi che estendono WSDL 2.0 Collega concetti presenti in una qualsiasi ontologia ad elementi del documento WSDL Non impone luso di alcun linguaggio speci鍖co per la rappresentazione del modello semantico E ulteriormente estendibile W3C Recommendation dal 28 Agosto 2007
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<wsdl:description targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns:wsdl="http://www.w3.org/ns/wsdl" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <wsdl:types> <xs:schema targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" elementFormDefault="qualified"> <xs:element name="OrderRequest"> ... </xs:element> <xs:complexType name="item"> ... </xs:complexType> <xs:element name="OrderResponse" type="confirmation" /> <xs:simpleType name="confirmation"> <xs:restriction base="xs:string"> <xs:enumeration value="Confirmed" /> <xs:enumeration value="Pending" /> <xs:enumeration value="Rejected" /> </xs:restriction> </xs:simpleType> </xs:schema> </wsdl:types> <wsdl:interface name="Order"> <wsdl:operation name="order" pattern="http://www.w3.org/ns/wsdl/in-out"> <wsdl:input element="OrderRequest" /> <wsdl:output element="OrderResponse" /> </wsdl:operation> </wsdl:interface> </wsdl:description> 7
<wsdl:description targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns:wsdl="http://www.w3.org/ns/wsdl" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:sawsdl="http://www.w3.org/ns/sawsdl"> <wsdl:types> <xs:schema targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" elementFormDefault="qualified"> <xs:element name="OrderRequest" sawsdl:modelReference="http://www.w3.org/2002/ws/sawsdl/spec/ontology/purchaseorder#OrderRequest" sawsdl:loweringSchemaMapping="http://www.w3.org/2002/ws/sawsdl/spec/mapping/RDFOnt2Request.xml"> ... </xs:element> <xs:complexType name="item"> ... </xs:complexType> <xs:element name="OrderResponse" type="confirmation" /> <xs:simpleType name="confirmation" sawsdl:modelReference="http://www.w3.org/2002/ws/sawsdl/spec/ontology/ purchaseorder#OrderConfirmation"> <xs:restriction base="xs:string"> <xs:enumeration value="Confirmed" /> <xs:enumeration value="Pending" /> <xs:enumeration value="Rejected" /> </xs:restriction> </xs:simpleType> </xs:schema> </wsdl:types> <wsdl:interface name="Order" sawsdl:modelReference="http://example.org/categorization/products/electronics"> <wsdl:operation name="order" pattern="http://www.w3.org/ns/wsdl/in-out" sawsdl:modelReference="http://www.w3.org/2002/ws/sawsdl/spec/ontology/ purchaseorder#RequestPurchaseOrder"> 8 <wsdl:input element="OrderRequest" /> <wsdl:output element="OrderResponse" /> </wsdl:operation> </wsdl:interface> </wsdl:description>
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Semantic Annotation for REST 11 [SA-REST] Automatizzare la fase di mediazione e composizione (mashup) di servizi RESTful Insieme di attributi che estendono (X)HTML (che non 竪 stato pensato per catturare le descrizioni di un servizio) Annota porzioni di codice (X)HTML che contengono descrizioni non machine- readable Utilizza RDFa, GRDDL o microformati (hCard, hCalendar, hResume) E ulteriormente estendibile
<html xmlns:sarest=http://lsdis.cs.uga.edu/SAREST#> ... <p about= http://craigslist.org/search/> The logical input of this service is an <span property=sarest:input> http://lsdis.cs.uga.edu/ont.owl#Location_Query </span> object. The logical output of this service is a list of <span property=sarest:output> http://lsdis.cs.uga.edu/ont.owl#Location </span> objects. This service should be invoked using an <span property=sarest:action>HTTP GET</span>. <meta property=sarest:lifting content=http://craigslist.org/api/ lifting.xsl/> <meta property=sarest:lowering content=http://craigslist.org/api/ lowering.xsl/> <meta property=sarest:operation content= http://lsdis.cs.uga.edu/ ont.owl#Location_Search/> </p> ... ... The logical input of this service is an http://lsdis.cs.uga.edu/ont.owl#Location_Query object. The logical output of this service is a list of http://lsdis.cs.uga.edu/ont.owl#Location objects. 12 This service should be invoked using an HTTP GET. ...
13 Tabella comparativa SAWSDL SA-REST Scopo Annotazione semantica Mashup Prima sottomissione novembre 2005 agosto 2007 Modello semantico OWL, RDF, DAML+OIL RDFa, Microformati Stato W3C Recommendation 08 W3C Activity incubator Pub. scienti鍖che 1 148 5 Citazioni 2 106 3 1) Fonte: Faceted DBLP 2) Fonte: Bibsonomy.org/
150 SAWSDL SA-REST 135 122 120 105 Numero di articoli scientifici 90 75 60 45 30 12 14 15 14 2 2 1 0 2007 2008 2009
Architettura
User Annotation Service SAWSDL4J / WSDL4J Pellet Reasoner UDDI4J META Ontology repository UDDI Discovery Service 16
17 Scenario duso Natural language To approve/reject descriptions suggested annotations WSDL 鍖le CODEArchitects CODEArchitects SAWSDL 鍖le META Annotation Tool Annotation Tool
Mockup
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20
21
22 Sviluppi futuri Associazioni semantiche anche per Precondizioni ed Effetti: maggior automazione nella fase di composizione
Dibattito

More Related Content

Semantic Web Service Annotation

  • 1. Web Service Semantic Annotation SWAP Group - Dip. Informatica di Bari
  • 2. Outline Standard per lannotazione semantica SAWSDL: Semantic Annotations for WSDL and XML Schema SA-REST: Semantic Annotations for REST Tabella comparativa Architettura Scenario duso Mockup Sviluppi futuri 2
  • 4. Semantic Annotations for WSDL 4 and XML Schema [SAWSDL] Annotazione semantica di Web Service descritti tramite WSDL Insieme di attributi che estendono WSDL 2.0 Collega concetti presenti in una qualsiasi ontologia ad elementi del documento WSDL Non impone luso di alcun linguaggio speci鍖co per la rappresentazione del modello semantico E ulteriormente estendibile W3C Recommendation dal 28 Agosto 2007
  • 5. 5
  • 6. 6
  • 7. <wsdl:description targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns:wsdl="http://www.w3.org/ns/wsdl" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <wsdl:types> <xs:schema targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" elementFormDefault="qualified"> <xs:element name="OrderRequest"> ... </xs:element> <xs:complexType name="item"> ... </xs:complexType> <xs:element name="OrderResponse" type="confirmation" /> <xs:simpleType name="confirmation"> <xs:restriction base="xs:string"> <xs:enumeration value="Confirmed" /> <xs:enumeration value="Pending" /> <xs:enumeration value="Rejected" /> </xs:restriction> </xs:simpleType> </xs:schema> </wsdl:types> <wsdl:interface name="Order"> <wsdl:operation name="order" pattern="http://www.w3.org/ns/wsdl/in-out"> <wsdl:input element="OrderRequest" /> <wsdl:output element="OrderResponse" /> </wsdl:operation> </wsdl:interface> </wsdl:description> 7
  • 8. <wsdl:description targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" xmlns:wsdl="http://www.w3.org/ns/wsdl" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:sawsdl="http://www.w3.org/ns/sawsdl"> <wsdl:types> <xs:schema targetNamespace="http://www.w3.org/2002/ws/sawsdl/spec/wsdl/order#" elementFormDefault="qualified"> <xs:element name="OrderRequest" sawsdl:modelReference="http://www.w3.org/2002/ws/sawsdl/spec/ontology/purchaseorder#OrderRequest" sawsdl:loweringSchemaMapping="http://www.w3.org/2002/ws/sawsdl/spec/mapping/RDFOnt2Request.xml"> ... </xs:element> <xs:complexType name="item"> ... </xs:complexType> <xs:element name="OrderResponse" type="confirmation" /> <xs:simpleType name="confirmation" sawsdl:modelReference="http://www.w3.org/2002/ws/sawsdl/spec/ontology/ purchaseorder#OrderConfirmation"> <xs:restriction base="xs:string"> <xs:enumeration value="Confirmed" /> <xs:enumeration value="Pending" /> <xs:enumeration value="Rejected" /> </xs:restriction> </xs:simpleType> </xs:schema> </wsdl:types> <wsdl:interface name="Order" sawsdl:modelReference="http://example.org/categorization/products/electronics"> <wsdl:operation name="order" pattern="http://www.w3.org/ns/wsdl/in-out" sawsdl:modelReference="http://www.w3.org/2002/ws/sawsdl/spec/ontology/ purchaseorder#RequestPurchaseOrder"> 8 <wsdl:input element="OrderRequest" /> <wsdl:output element="OrderResponse" /> </wsdl:operation> </wsdl:interface> </wsdl:description>
  • 9. 9
  • 10. 10
  • 11. Semantic Annotation for REST 11 [SA-REST] Automatizzare la fase di mediazione e composizione (mashup) di servizi RESTful Insieme di attributi che estendono (X)HTML (che non 竪 stato pensato per catturare le descrizioni di un servizio) Annota porzioni di codice (X)HTML che contengono descrizioni non machine- readable Utilizza RDFa, GRDDL o microformati (hCard, hCalendar, hResume) E ulteriormente estendibile
  • 12. <html xmlns:sarest=http://lsdis.cs.uga.edu/SAREST#> ... <p about= http://craigslist.org/search/> The logical input of this service is an <span property=sarest:input> http://lsdis.cs.uga.edu/ont.owl#Location_Query </span> object. The logical output of this service is a list of <span property=sarest:output> http://lsdis.cs.uga.edu/ont.owl#Location </span> objects. This service should be invoked using an <span property=sarest:action>HTTP GET</span>. <meta property=sarest:lifting content=http://craigslist.org/api/ lifting.xsl/> <meta property=sarest:lowering content=http://craigslist.org/api/ lowering.xsl/> <meta property=sarest:operation content= http://lsdis.cs.uga.edu/ ont.owl#Location_Search/> </p> ... ... The logical input of this service is an http://lsdis.cs.uga.edu/ont.owl#Location_Query object. The logical output of this service is a list of http://lsdis.cs.uga.edu/ont.owl#Location objects. 12 This service should be invoked using an HTTP GET. ...
  • 13. 13 Tabella comparativa SAWSDL SA-REST Scopo Annotazione semantica Mashup Prima sottomissione novembre 2005 agosto 2007 Modello semantico OWL, RDF, DAML+OIL RDFa, Microformati Stato W3C Recommendation 08 W3C Activity incubator Pub. scienti鍖che 1 148 5 Citazioni 2 106 3 1) Fonte: Faceted DBLP 2) Fonte: Bibsonomy.org/
  • 14. 150 SAWSDL SA-REST 135 122 120 105 Numero di articoli scientifici 90 75 60 45 30 12 14 15 14 2 2 1 0 2007 2008 2009
  • 16. User Annotation Service SAWSDL4J / WSDL4J Pellet Reasoner UDDI4J META Ontology repository UDDI Discovery Service 16
  • 17. 17 Scenario duso Natural language To approve/reject descriptions suggested annotations WSDL 鍖le CODEArchitects CODEArchitects SAWSDL 鍖le META Annotation Tool Annotation Tool
  • 19. 19
  • 20. 20
  • 21. 21
  • 22. 22 Sviluppi futuri Associazioni semantiche anche per Precondizioni ed Effetti: maggior automazione nella fase di composizione

Editor's Notes

  9. L&amp;#x2019;idea di collegamento/binding/associazione tra documento WSDL e concetto dell&amp;#x2019;ontologia.
  11. Mashup = opportuna e lecita composizione di servizi per la costruzione di un&amp;#x2019;applicazione; La fase di mashup &amp;#xE8; attualmente manuale, malgrado tool con interfacce grafiche evolute.
  14. Alcuni degli articoli su SAWSDL riguardano progetti framework operativi come FUSION, MWSAF (di METEOR-S), IBM Annotation Editor (di IBM Semantic Tools for Web Services)
  17. Annotazione di input, output (req. funzionale) e categoria del servizio (req. non funzionale)