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UMBEL Semantic Web Services

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Information about UMBEL Semantic Web Services

Published on April 20, 2008

Author: mkbergman

Source: slideshare.net

Description

UMBEL\'s first 11 semantic Web services and online demos show how a lightweight structure of 21000 subject concepts can provide context for inter-linking external data and ontologies. Additional value through the network effect of inherited relationships and properties is also gained as more structure and data is added. UMBEL is an excellent upper mapping and binding layer for integrating Linked Data and rich sources of named entities such as Wikipedia. The UMBEL subject concepts are derived from the OpenCyc version of the proven Cyc knowledge base.
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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 .

. . . 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

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

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

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 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

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

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

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

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

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 !

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 !

Access the UMBEL Web services at:

http://umbel.zitgist.com

Thanks to for hosting us !

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