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Semantic Data Management Xavier Lopez, Ph.D., Director, Spatial & Semantic Technologies 1 The Web is about links… The Semantic Web is about the relationships in those links Dan Brickley 2 Vision of Semantically Linked Data The Network of Collaborative Knowledge A web of data that can be intelligently processed by machines delivering an environment that: • Intelligent • Solves Problems • Relevant • Answers Questions • Contextual • Easily Searchable • Interconnected • Let Information follow you “The next generation of information workers will expect a highly visual, connected, contextual information workplace they can take anywhere.” - Forrester 3 Linked Open Data Cloud (2008) 4 Linked Open Data Cloud (2010) 5 Linked Open Data & Location Services • Create consolidated “single” views across Web Map Server Endpoints • Reconcile differences in data semantics so that they can all “talk”and interoperate; • Resolving semantic discrepancies across databases, gazetteer and applications • Integrate full breath of enterprise content (structured, spatial, email, documents, web services) 6 “Concept” driven Applications Location Services National Map Core Datasets National Map Ontologies Application Ontologies Emergency Response Geographic Names Spatial Data • • • • • • DoD Raster Data Simple Features GeoRaster Topology Networks Gazateers … • • • • • • Data Integration National Map schemas Geographic names Temporal Naïve Geography … State & Local Government 7 CIM in a Federation of Ontologies 8 Dublin Core in RDF (Ariadne) 9 Linking Data Resources User Query & results RDF Data Ontologies Structured & Unstructured Data Sources 10 It’s Not Just about “Linking” • Integrate domains of knowledge through common vocabularies (ie SKOS) Semantic Aggregation & Navigation of Data • Manage relationships between collections of images and associated metadata • RDF as flexible and extensible data model supports powerful search and end-user discovery of related content • Rich platform for data integration, data repurposing, and better quality control and classification 11 Metadata of documents 12 Relational Database to Ontological Mapping Pathological Change Neuron Compartment has is_located_in involves involves Neuronal Property Pathological Agent Agent inhibits inhibits inhibits Drug Receptor is_located_in Channel 13 Courtesy: SenseLab, Yale University Contextually Driving Applications People My View Communities Information Delivering relevant, contextual content based on relationships, profile & activity 14 Social Semantic Enterprise Semantic Semantic Tagging Tagging Concept definitions with unique meaning Language independent Island: Java or Recommendations Relational Navigation Find related content & groups by navigating connected entities to John Semantic Search Search for concepts Return semantically related results via Chambers or Cisco CEO Social Connectivity through Semantic Enablement 15 Oracle 11g RDF/OWL Graph Data Management • Storage & Loading • Native W3C RDF graph data store • Fast Bulk, batch & Incremental load • Query • SQL: SEM_MATCH graph pattern query • SPARQL: supported via Jena plug-in • Reasoning • RDF, OWL Prime, RDF++ semantic rules • Forward chaining inference model • User defined rule base • Scalability • Scales to billions of triples • Partitioning, RAC, Adv. Compression Structured DBMS, Unstructured, Spatial, RSS, email, Documents • Standards & Interoperability • Aligned with W3C specifications • Supported by leading semantic tools 16 Semantic Technologies Adopters Life Sciences Defense/ Intelligence Education Telecomm Hutchinson 3G Austria 11g Reference Clinical Medicine Publishing 11g Reference Thomson Reuters 11g Reference 11g Reference 11g Reference 17 Archives Discovery Workflow Ontology Engineering Modeling Process Information Extraction Web Resources Categorization, Feature/term Extraction RDF/OWL Processed Document Collection OWL Ontologies Domain Specific Knowledge Base News, Email, RSS Content Mgmt. Systems Explore Spatial Data Browsing, Presentation, Reporting, Visualization, Query Analyst 18 Extraction, Modeling, Reasoning & Discovery Transaction Systems Unstructured Content RSS, email Transform & Edit Load, Query Applications & Tools & Inference Analysis Tools Entity Extraction & Transform • RDF/OWL Data Management Ontology Engineering • SQL & SPARQL Query Categorization • Inferencing Custom Scripting • Semantic Rules • Scalability & Security Other Data Formats • OBIEE, Analytics • Graph Visualization Social Network Analysis • Metadata Registry • Faceted Search • Semantic Indexing Data Sources Partner Tools Partner/Oracle Tools 19 Why is Oracle Spatial unique in Semantics Data Management? • Oracle 11g is the only commercial database with native RDF/OWL semantics capability. • Can readily scale to ultra-large repositories (+1 billion) • Growing ecosystem of 3rd party tools partners • Leverages Oracle Partitioning and Advanced Compression. RAC is also supported. • Semantics customers expect to deploy very large servers 20 Upcoming Events 21 Contacts and Resources: Product Management: [email protected] White papers, documentation, discussion forum, sample code, downloads, press releases: Google: “Oracle RDF” http://www.oracle.com/technology/tech/semantic_technologies/index.html 22