UMBEL Semantic Web Services

Slide 1: UMBEL’s Eleven: Initial Semantic Web Services Upper Mapping and Binding Exchange Layer April 2008

Slide 2: UMBEL is . . . . . . a lightweight reference structure for placing Web content and data in context with other data. . . . is comprised of about 21,000 subject concepts and their relationships — with one another and with external vocabularies and named entities. Upper Mapping and 2 Binding Exchange Layer

Slide 3: Subject Concepts  21,000 defined reference points in information space  Means to assert what a given chunk of content is about  Enable similar content to be aggregated  Place content in context with other content  Aggregation points for tying in named entities  Totally derived and a subset of OpenCyc, the open source version of the Cyc knowledge base http://www.opencyc.com http://www.cycorp.com Upper Mapping and 3 Binding Exchange Layer

Slide 4: Deriving from OpenCyc Upper Mapping and 4 Binding Exchange Layer

Slide 5: Named Entities  The places, events, people, objects, and specific things of the real world  Literally millions of notable instances  Each belongs to one or more subject concept(s)  Currently, the predominate basis for Linked Data  Important sources include Wikipedia (Yago) and other public sources  Can be readily mixed-and-matched with private entities Upper Mapping and 5 Binding Exchange Layer

Slide 6: UMBEL is Middleware Any external content (ontologies + named  OpenCyc entities) UMBEL  (inferencing, structure Any external content and other tools)  (ontologies + named entities)  UMBEL ontology is based on RDF  RDF Schema vocabulary of SKOS (Simple Knowledge Organization System)  OWL Full to aid class, domain and range relationships with external ontologies  Provides excellent interoperability Upper Mapping and 6 Binding Exchange Layer

Slide 7: UMBEL is a Roadmap  A set of roadsigns to help find related content  A contextual way to get from one concept space to another  More detailed maps used for specific domains Upper Mapping and 7 Binding Exchange Layer

Slide 8: UMBEL is a Backbone  The backbone to UMBEL is the relationships amongst its subject concepts  The backbone provides the contextual graph for inter- relating content  The backbone is a reference structure for more specific domains or ontologies  The backbone is contextual, and relatively stable and constant Upper Mapping and 8 Binding Exchange Layer

Slide 9: Exploding the Domain  Each subject concept is an individual of the skos:Concept class, which are themselves OWL classes  Since subject concepts are classes, can relate to external ontology classes using rdfs:subClassOf and owl:equivalentClass  Under right circumstances, can also inherit properties  Through inferencing, silo data now can inherit open world understanding, therefore:  exploding the domain Upper Mapping and 9 Binding Exchange Layer

Slide 10: A Deep Dive into the Backbone . . . . . . all 21,000 nodes Upper Mapping and 10 Binding Exchange Layer

Slide 11: A Deep Dive into the Backbone . . . . . . top 750 nodes Upper Mapping and 11 Binding Exchange Layer

Slide 12: A Deep Dive into the Backbone . . . . . . top 350 nodes Upper Mapping and 12 Binding Exchange Layer

Slide 13: A Deep Dive into the Backbone . . . . . . zeroing in on ‘automobiles’ Upper Mapping and 13 Binding Exchange Layer

Slide 14: A Deep Dive into the Backbone . . . . . . zeroing in on ‘Saabs’ Upper Mapping and 14 Binding Exchange Layer

Slide 15: The First Eleven Web Services

Slide 16: UMBEL’s Eleven  Find Subject Concepts  Verify Sub-Class Relationship  Subject Concept Report  Verify Super-Class  Subject Concept Detailed Relationship Report  Verify Equivalent Class  List Sub-Concepts & Sub- Relationship Classes  Subject Concepts Explorer  List Super-Concepts & Super-Classes  Yago Ontology  List Equivalent External Classes Upper Mapping and 16 Binding Exchange Layer

Slide 17: Demos, Docs & APIs Upper Mapping and 17 Binding Exchange Layer

Slide 18: Find Subject Concept Upper Mapping and 18 Binding Exchange Layer

Slide 19: Subject Concept Detailed Report Upper Mapping and 19 Binding Exchange Layer

Slide 20: Subject Concept Explorer Upper Mapping and 20 Binding Exchange Layer

Slide 21: YAGO Ontology Upper Mapping and 21 Binding Exchange Layer

Slide 22: Why Important to the Semantic Web?  Context, Context, CONTEXT  For Linked Data  Context !  For Web Search:  Infinite facets  Disambiguation  Cleaner navigation  For Legacy Data Stovepipes:  Making the connections  Closed World schemas become Open World information  Context ! Upper Mapping and 22 Binding Exchange Layer

Slide 23: Play for Yourself  Access the UMBEL Web services at: http://umbel.zitgist.com Thanks to for hosting us ! Upper Mapping and 23 Binding Exchange Layer