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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 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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  1. IST-2001-34825 Ontology evolution: the mechanical ontology domain Maurizio Vincini

  2. 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

  3. 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.

  4. Automatic detection of IS-A Hierarchy • Select relevant Common Thesaurus relationships included in a cluster

  5. 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}

  6. 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

  7. 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)

  8. BBA Mechanical Ontology (a portion of)

  9. Ontology Evolution: insert a new node into the Mechanical Ontology • The new SI-Node SN-New

  10. Ontology Evolution: automatic mapping • Automatic mapping: • SN-New.Enterprise is included into the BBA.Company Global Class

  11. Ontology Evolution: Automatic Mapping • Automatic mapping: • SN-New.category_list is included into the BBA.List_of_Category global Class

  12. 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

  13. Ontology Evolution: detecting ISA relationships • ISA relationships BBA SN-New

  14. Ontology Evolution: detecting ISA relationships BBA SN-New

  15. Ontology Evolution: the modified BBA Mechanical Ontology

  16. 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

  17. IST-2001-34825 Ontology design tools Enrico Franconi

  18. 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

  19. The BA Ontology Design Methodology External Ontology User Ontology Broker Domain Ontology Bridging Ontology Bootstrapped BA Ontology

  20. 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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