Facilitating Business Interoperability from the Semantic Web

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Facilitating Business Interoperability from the
Semantic Web

• Roberto García, Rosa Gil
• Universitat de Lleida, Spain

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Contents

• Introduction
• Proposal
• Ontological framework
• Integration framework
• Conclusions
• Future Work

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Contents

• Introduction
• Proposal
• Ontological framework
• Integration framework
• Conclusions
• Future Work

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Introduction

• Networked Business to Business
• Interoperability
• Standardisation approach
• Define common lingua
• Usually based on an XML Schema formalisation
• No one-fits-all solution
• Proliferation Biztalk, RosettaNet, ebXML, UML,
  BPEL
• Sofistication domain complexity
• Complexity Heterogeneity
• Busines Information Systems difficult to manage
  and integrate

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Introduction

• Some existing standards
• OASIS
• ebXML, Electronic Business using eXtensible
  Markup Language
• CPPA (Collaboration Protocol Profile and
  Agreement)
• BP (Business Process)
• BPEL-WS, Web Services Business Process Execution
  Language
• UBL, Universal Business Language
• Microsoft BizTalk
• RosettaNet
• Common aspects non formal semantics and XML-based

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Contents

• Introduction
• Proposal
• Ontological framework
• Integration framework
• Conclusions
• Future Work

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Proposal

• Semantic Metadata and Ontology
• facilitate management and integration
• Semantic Approach to BIS
• Related work
• The Enterprise Ontology
• eCl_at_ss OWL (Web Ontology)
• EDI Ontology (OWL)
• RosettaNet Ontology (OWL)

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Proposal

• Limitations
• Whole effort for each XML standard formalised
• Break with existing XML based BIS
• Lack momentum, ontological framework but no data
• Alternative
• Automate XML formalisation (at least to some
  extent)
• Keep links to existing XML based BIS
• Also map existing data

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Contents

• Introduction
• Proposal
• Ontological framework
• Integration framework
• Conclusions
• Future Work

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Ontological Framework

• ebXML, WSBPEL, UBL, RosettaNet,
• XML ? Semantic Web
• XML Semantics Reuse MethodologyReDeFer
  implementation
• XSD2OWL schema to ontology
• XML2RDF XML instance data to RDF instances

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Ontological Framework

• ReDeFer XSD2OWLMappings

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Ontological Framework

• ebXML BP classes
• Hierarchy from XSDcomplex types andextension
  relations

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Ontological Framework

• Apply methodology to existing XML standards
• ebXML
• Collaboration Protocol Profile and Agreement
  (ebCPPA) cpp-cpa-v1_0.owl
• Business Process (ebBP) ebbp-2.0.3.owl
• BPEL-WS
• Web Services Business Process Execution Language
  (WSBPEL) business-process.owl
• Integrate RosettaNet Ontology (from LSDIS, Univ.
  of Georgia)

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Ontological Framework

• A generic XML semantics reuse methodology
• Already validated in other domains
• Multimedia MPEG-7 ontology (W3C MMSEM XG)
• Digital Rights Management MPEG-21 ontologies
  (MPEG)
• Newspapers IPTC, NewsML and NITF ontologies

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Ontological Framework Instances

• ReDeFer XML2RDF XML tree ? RDF graph.
• Deduce blank node types (i.e. XSD Complex Types)
  from XSD2OWL ontologies restrictions.

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Ontological Framework Instances

• ebXML CPP example from XML to RDF (fragment)
• Includes XML tree but also XSD complex types

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Contents

• Introduction
• Proposal
• Ontological framework
• Integration framework
• Conclusions
• Future Work

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Integration Framework

• Load Ontological Framework

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Integration Framework

• Integrate Ontologies
• OWL semantic relations for equivalence and
  inclusion subClassOf, subPropertyOf,
  equivalentClass, equivalentProperty,
  sameIndividualAs, etc.
• More complex mappings using Semantic Web Rules
• Generate mappings
• OWL Ontology Aligner
• User supervision

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Integration Framework

• ebXML BP to ebXML CPA mappings

ebbplocation ebbpRole ebbptype ebbpmimeType ebbpRoleType ebbpProcessSpecificationType ebbpStart ebbpProcessSpecification ebbpvalue ebbpname ebbpuri ebbpBusinessAction ebbpisAuthenticated Specification ... ? ? cppalocation cppaRole cppatype cppamimetype cppaRoleType cppaProcessSpecificationType cppaStart cppaProcessSpecification cppavalue cppaname cppauri cppaaction cppaauthenticated cppaProcessSpecification ...
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Integration Framework

• ebXML BP to BPEL-WS mappings

ebbpexpression ebbpexpressionLanguage ebbpname ebbppattern ebbpVariable ebbpPreCondition ebbpBusinessPartnerRole ... ? bpelexpression bpelexpressionLanguage bpelname bpelpattern bpelvariable bpelcondition bpelpartnerRole ...
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Integration Framework
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Integration Framework
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Integration Framework

• Semantics into practice
• Scenario the previous ebXML CPP example
• Semantics formalised by ebXML CPPA Ontology
• Semantics connected to data through references
  to
• Classes, and their hierarchy, for XSD complex
  types
• Properties, and their hierarchy/restrictions, for
  XSD elements

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Integration Framework

• Semantics into practice
• Task get all SignalEnvelope types
• XML tools many XQueries and aware of schema
  structure
• Semantic tools 1 query, unaware and support
  changes

PREFIX ebbp lthttp//rhizomik.net/ontologies/2006/06/ebbp-2.0.3.owlgt SELECT ?r WHERE (?r ltrdftypegt ebbpSignalEnvelopeType)
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Contents

• Introduction
• Proposal
• Ontological framework
• Integration framework
• Conclusions
• Future Work

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Conclusions
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Conclusions

• XSD2OWLtake profit from XML Schema hidden
  semantics
• We formalise them when building ontologies, but
  also implicitly when we make XML Schemas
• Ontologies from XSD
• ebXML, BPEL-WS and more to come (automatic)
• First formalisation step
• Hook more detailed semantics
• Map to other ontologies

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Conclusions

• XML2RDF reuse existing XML metadata to add
  momentum to Semantic Web BIS
• Model XML tree as graph
• Enrich with links to concepts in ontologies
• Facilitate implementation using Semantic Web
  tools (DL reasoners, rule engines, semantic
  queries,)

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Contents

• Introduction
• Proposal
• Ontological framework
• Integration framework
• Conclusions
• Future Work

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Future Work

• Map other Business XML Schemas to OWL
• More detailed integration (also rules)
• Advanced ontology alignment tools
• Formal business ontology as hub for integration
• Demonstrator simple semantic BIS

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Thank you for your attention

• More at
• http//rhizomik.net /redefer (mapping
  tools) /ontologies/bizontos (eBiz ontologies)
• Contact
• rgarcia,rgil_at_diei.udl.cat