webode and its ontology management apis. april 8th 2005 1 © ontology engineering group webode and...

WebODE and its Ontology Management APIs. April 8th 2005 1 © Ontology Engineering Group

WebODE and its Ontology Management APIs

Ontology Engineering Group

April 8th 2005


Table of Contents

• WebODE at a glance

• WebODE Ontology Editor

• Main WebODE services

• Summary


WebODE

• Java based Ontological Engineering Workbench that gives support to Methontology.

• Provides a very expressive knowledge model.• Covers and gives support to most of the activities

involved in the ontology development process with different types of ontology-related services.

• Developed by the Ontology Engineering Group at UPM.

http://delicias.dia.fi.upm.es/webode


Prune

Extend

Specialize

Maintenance

Technological Support

Multilinguality

Specify Conceptualize Evaluate Implement

DAML+OIL

RDF(S)

OWL

Integrate Maintenance Use

KnowledgeAcquisition

RDF(S) DAML+OIL OWL

RDF(S) DAML+OIL OWL

Alignment

Merge

Differences

Import

Evaluate

RDF(S) DAML+OIL OWL


XC

AR

IN

RD

F(S

)

XC

AR

IN

DA

ML

+O

IL

OD

ED

esig

ner

WebPickerInference

engine

Export services

OW

L

Import services

OW

L

Otherlanguages

OK

BC

Pro

log

OIL

FL

ogic

ODE Ontology Management APICache Consistency Axiom

ODEval

DA

ML

+O

IL

OD

EM

apst

er

Ont

oTag

ger

ODE Evolution Manager

Otherlanguages

OD

EM

erge

Ontology languagesOntology languages

OD

EL

inge

r

RD

F(S

)

UM

L

XM

L

UM

L

XM

L

Jess

Java

DB ServerApplication Server

WebODE ArchitectureOntology Editor


WebODE Knowledge Model• Concepts

– Class attributes

– Instance attributes

• Groups of concepts

• Relations

– Taxonomical

• Between concepts (subclass-of, not-subclass-of)

• Between concepts and groups (disjoint-subclass-partition, exhaustive-subclass-partition)

– Mereological (transitive-part-of, intransitive-part-of)

– Ad-hoc

• Properties

– Built-in properties (reflexive, irreflexive, symmetric, asymmetric, antisymmetric, transitive)

– Ad-hoc properties

• Imported terms

• Constants

• Synonyms

• Abbreviations

• Formulae (axioms, rules, procedures)

• References

• Instance sets

• Instances (of concepts or of relations)


Table of Contents




• Summary


WebODE ontology editor


OntoDesigner


OntoDesigner with ODEClean


WebODE Axiom Builder


WebODE Documentation Service


Table of Contents




• Summary


Ontology evaluation: ODEval

• Ontology Evaluation at the symbol Level.• Detects problems (inconsistency and redundancy) in

concept taxonomies in: – DAML+OIL ontologies– RDF(S) ontologies– OWL ontologies


Ontology translation: ODEDialect

• Import and export services integrated with • Translation strategy: Minimize Knowledge losses• Import services:

RDF(S), DAML+OIL, OWL, XML, CARIN, UML, Protégé2000

• Export services:

RDF(S), DAML+OIL, OWL, XML, CARIN, Jess/Java, UML, Protégé-2000


Conceptual Model

Conceptual Model'

Restructuring:.- Redesign

.- Evaluation at the knowledge level

Reverse Engineering

Forward Engineering

Implemented Ontology

Implemented Ontology'

Ontological Reengineeringwith WebODE

• The process of retrieving a conceptual model of an implemented ontology and transforming this conceptual model to a more suitable one.


Ontology Maintenance• Goal:

– Ontology Evolution• Change and difference detection • Ontology versioning (not done)

• Scope :– Differences between two ontologies:

• Added concepts• Removed concepts• Added ‘subclass-of’ relations• Removed ‘subclass-of’ relations


ODELinger

• Automatic Storage in the Eagles standard of the linguistic information provided by the annotators.

• Different kinds of linguistic information retrieval:– Approximated search– Collocations (document + paragraph + sentence)– Query to the Eagles standard– …

• Semiautomatic ontology construction:– Statistical processing (word level)

• Concepts– Linguistic Pattern processing

• Taxonomic relations • Non Taxonomic relations


Multilinguality in ontologies• Semiautomatic translation of the ontology terms to other natural languages• Multilingual resources used for improving the accuracy and the quality of the

translation– EuroWordNet (Spanish, German, and English WordNets)– Babelfish online translation service– Wikipedia.org

• Scope– Ontology components:

• Concepts• Attributes• Relations

– Natural languages:• English• Spanish• German


TermTraslator System

Multilingual Resources

On-line Translation

Change a previous translation and choose another one

Choose the position

Other posibilities

Translate

Wikipedia translation available for this term


ODEMapster Architecture

Ontology conceptual model

OWL implementation

DAML+OIL implementation

RDF(S) implementation ...

instance set for ontology in OWL

Inst. for ontology in DAML+OIL

instance set for ontology inRDFS ...

DeclarativeMapping

DescriptionR2O

E/R model

SQL relational model

DatabaseInstance data

(records)

ODE (processor)

Mod

ellin

gIm

plem

enta

tion


Querying ODEMapster

Ontology

ProfessorPHDStudent

RDB ER model

Person

Organization

<xml>R2O Mapping</xml>

I’d like to have the names of all the

Professors in UPM

* A Professor is a Person whose job

is “teaching”* A university is an Organization whose type is “3”

Give me the name of every Person whose job is “teaching” and works

for an Organization of type “3” called UPM


Table of Contents




• Summary


In summary • Methodological and technological support to ontology life cycle

– Technological Support

• Ontological Reengineering

– Evaluation

– Translation

• Maintenance:

– Differences

– Evolution

• Mappings

• Semiautomatic knowledge acquisition

• Multilinguality

Multilinguality

Prune

Extend

Specialize

RDF(S) DAML+OIL OWLRDF(S) DAML+OIL OWL

Alignment

Merge

Differences

Maintenance

Especify

Conceptualize Evaluate Implement

DAML+OIL

RDF(S)

OWL

Integrate MaintenanceUse

Impor

t

RDF(S) DAML+OIL OWL

Evaluate

Re-engineering


WebODE APIs

• Ontology Management API– Insert– Update– Remove– Query

• Ontology Translation API• Ontology Evaluation API• Ontology Evolution API• Ontology Translation API


WebODE and its Ontology Management APIs

Ontology Engineering Group

April 8th 2005

webode and its ontology management apis. april 8th 2005 1 © ontology engineering group webode and...

Documents