Ist 2001 34825
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IST-2001-34825. Ontology evolution: the mechanical ontology domain Maurizio Vincini. The Ontology Builder (OB) prototype: summary. The OB performs the integration of the schemas of a set of heterogeneous data sources (i.e. relational, object, XML) in a semiautomatic way

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IST-2001-34825

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Ist 2001 34825

IST-2001-34825

Ontology evolution:

the mechanical ontology domain

Maurizio Vincini


The ontology builder ob prototype summary

The Ontology Builder (OB) prototype: summary

  • The OB performs the integration of the schemas of a set of heterogeneous data

    sources (i.e. relational, object, XML) in a semiautomatic way

  • The OB creates a ODLI3 Global Virtual View (GVV) by means of several steps:

    • Annotation of local sources: for each element (class/table/attribute) the integration designer choose on/more WordNet meaning(s)

    • Common Thesaurus (CT) generation

      intra schema-derived relationships (automatic)

      lexicon-derived relationships (by using WordNet classification, automatically proposed)

      inferred relationships (by ODB-Tool, a tool based on Description Logics techniques)

    • Automatic generation of clusters of similar classes (Global Classes) by evaluating the Common Thesaurus relationships

    • Mapping tables generation among each cluster and the local classes in the cluster


Ontology builder new features

Ontology Builder: new features

  • Automatic detection of IS-A hierarchies

    • Use of the Common Thesaurus relations to infer the IS-A relationships within a cluster

  • Ontology evolution (GVV): Insertion of a new source

    • Integration from scratch: the OB integration process is started; in this case we can exploit the Common Thesaurus produced by a previous integration process.

    • Integration with the GVV: the process automatically exploits the GVV (semantically enriched by means of annotation) and the Common Thesaurus.


Automatic detection of is a hierarchy

Automatic detection of IS-A Hierarchy

  • Select relevant Common Thesaurus relationships included in a cluster


Ontology evolution

Ontology Evolution

  • Case 1

    • A new global class gcNew is composed of only one old global class (gcOld) and one or more new local classes (lcNewi):

  • gcNew = {gcOld,lcNew1,…lcNewi,… lcNewn}


Ontology evolution1

Ontology Evolution

  • Case 2

    • A global class of the new integrated schema is composed of only new local classes.

      gcNew = {lcNew1,…lcNewi,…lcNewn}

    • The IS-A relationships with old and new Global classed are derived


Overview of the demonstration

Overview of the demonstration

  • Goal:

    • Integration of a new SINode within the BBA Mechanical Ontology

  • Starting point:

    • BBA Mechanical Ontology

    • The annotated GVV of the new SINode

  • Organization:

    • Step 1: Insert the new SI-Node

    • Step 2: Common Thesaurus generation (automatic)

    • Step 3: Global Virtual View and Mapping Table generation (automatic)


Bba mechanical ontology a portion of

BBA Mechanical Ontology (a portion of)


Ontology evolution insert a new node into the mechanical ontology

Ontology Evolution: insert a new node into the Mechanical Ontology

  • The new SI-Node SN-New


Ontology evolution automatic mapping

Ontology Evolution: automatic mapping

  • Automatic mapping:

    • SN-New.Enterprise is included into the BBA.Company Global Class


Ontology evolution automatic mapping1

Ontology Evolution: Automatic Mapping

  • Automatic mapping:

    • SN-New.category_list is included into the BBA.List_of_Category global Class


Ontology evolution automatic mapping2

Ontology Evolution: Automatic Mapping

  • SN-New.Processes_plastic is included into the BBA.processes_plastic_and _rubber global Class

  • SN-New.Packaging give rise to a new Global Class


Ontology evolution detecting isa relationships

Ontology Evolution: detecting ISA relationships

  • ISA relationships

BBA

SN-New


Ontology evolution detecting isa relationships1

Ontology Evolution: detecting ISA relationships

BBA

SN-New


Ontology evolution the modified bba mechanical ontology

Ontology Evolution: the modified BBA Mechanical Ontology


The ontology design tool

The Ontology Design Tool

  • It allows for the creation, the editing, the managing, and the storing of several ontologies, possibly interconnected by means of inter-ontology mappings, with a user friendly graphical interface

  • It employs accepted standards for the ontology language (OWL, DIG, UML/XMI)

  • It visually represents the ontology and the inter-ontology mappings in a diagrammatic way - based on UML

  • An underlying ontology reasoner is employed by the tool to verify the specification, infer implicit, new, or stricter facts, and manifest any inconsistencies in the ontology and mappings in the design and edit phases


Ist 2001 34825

IST-2001-34825

Ontology design tools

Enrico Franconi


The ontology design tool1

The Ontology Design Tool

  • It allows for the creation, the editing, the managing, and the storing of several ontologies, possibly interconnected by means of inter-ontology mappings, with a user friendly graphical interface

  • It employs accepted standards for the ontology language (OWL, DIG, UML/XMI)

  • It visually represents the ontology and the inter-ontology mappings in a diagrammatic way - based on UML

  • An underlying ontology reasoner is employed by the tool to verify the specification, infer implicit, new, or stricter facts, and manifest any inconsistencies in the ontology and mappings in the design and edit phases


The ba ontology design methodology

The BA Ontology Design Methodology

External

Ontology

User

Ontology

Broker

Domain Ontology

Bridging

Ontology

Bootstrapped BA Ontology


Wp6 the ontology design tool summary

WP6: The Ontology Design Tool summary

  • Technical challenges

    • A logic based framework

    • Reasoning support

    • Use of standards

  • Innovation

    • A novel diagrammatic paradigm

    • A design methodology

    • Multi-language support

    • A focus based graphic paradigm for easier navigation


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