UMBEL Semantic Web Services

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

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 .

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

Deriving from OpenCyc

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

UMBEL is Middleware
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
Any external content (ontologies + named entities) Any external content (ontologies + named entities)   UMBEL  OpenCyc (inferencing, structure and other tools)

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

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

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

A Deep Dive into the Backbone . . . . . . all 21,000 nodes

A Deep Dive into the Backbone . . . . . . top 750 nodes

A Deep Dive into the Backbone . . . . . . top 350 nodes

A Deep Dive into the Backbone . . . . . . zeroing in on ‘automobiles’

A Deep Dive into the Backbone . . . . . . zeroing in on ‘Saabs’

The First Eleven Web Services

UMBEL’s Eleven
Find Subject Concepts
Subject Concept Report
Subject Concept Detailed Report
List Sub-Concepts & Sub-Classes
List Super-Concepts & Super-Classes
List Equivalent External Classes
Verify Sub-Class Relationship
Verify Super-Class Relationship
Verify Equivalent Class Relationship
Subject Concepts Explorer
Yago Ontology

Demos, Docs & APIs

Find Subject Concept

Subject Concept Detailed Report

Subject Concept Explorer

YAGO Ontology

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 !

Play for Yourself
Access the UMBEL Web services at:
http://umbel.zitgist.com
Thanks to for hosting us !

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UMBEL Semantic Web Services

by Mike Bergman on Apr 20, 2008

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UMBEL Semantic Web Services — Presentation Transcript