© 2011 Sixhills Consulting LtdSemantic Web Technology ‘Layer Cake’Exploring Business Applications of Semantic Web TechnologySource: W3C; Sixhills AnalysisTrustLogic &ProofOntologyInfrastructure• Authentication• Trustworthiness of statements• Inference of unstated facts• Establishing ‘truth’ of statements• Relationships/facts represented as ‘triples’• Encoding vocabularies for communicating shared meaning• Metadata – data that describes data• Graph, structure, syntax and data types• Mostly undeveloped• Inferencing and reasoning methods are well developed• End user level application tools are scarce (mostly programmer tools at the moment)• Standard business applicable ontologies are appearing but relatively untested• SPARQL query is mature, Update standard is in development• RIF (Rules Interchange Format) is still in development, but rules can be expressed in mature standard form, e.g., Notation 3• Standards are well developed and mature• Software is available (triple-stores), growing in scale/stabilityAssessmentWhat is in it?LayerMaturity Assessment (as at 2010)P3
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