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Semantic Interoperability and Retrieval Paradigms

Semantic Interoperability and Retrieval Paradigms. Paradigms and conceptual systems in KO February 23, 2010 – February 26, 2010. Felix Boteram. Prof. Winfried Gödert. Jessica Hubrich. Retrieval. Focussed search Expansion Exploration. 2. Classifications Thesauri Semantic networks

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Semantic Interoperability and Retrieval Paradigms

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  1. Semantic Interoperability and Retrieval Paradigms Paradigms and conceptual systems in KO February 23, 2010 – February 26, 2010 Felix Boteram Prof. Winfried Gödert Jessica Hubrich

  2. Retrieval • Focussed search • Expansion • Exploration 2

  3. Classifications • Thesauri • Semantic networks • Ontologies Knowledge organization systems Retrieval

  4. Technical • Structural • Semantic Interoperability Knowledge organization systems Retrieval 4

  5. Semantic interoperability 5

  6. Semantic interoperability Retrieval 6

  7. Overall model forsemanticinteroperability Aims • Strategies for retrieval and exploration in distributed systems • Integration of structurally and typologically different systems • Overall system consisting of an ontological spine and attached satellites Features • Simple hierarchical core system • Detailed bilateral mappings • Expressive multidimensional definition of intersystem and interconcept relations • Shared inventory of standard relations 7

  8. Syn. Syn. SWS Syn. SWL Syn. Syn. Syn. Syn. Syn. SWSWD SWS SWLCSH SWL Syn. Core System*) SWS SWL SWL SWS Syn. Syn. Localized semantic networks with typed relations as link to the ontological spine Possible extensions with satellites Syn. SWR SWxy SWRameau Syn. Syn. Syn. Syn. SWR SWxy SWxy Syn. Syn. SWR SWR Syn. 8 SWxy SWxy Syn. Syn. Syn.

  9. Retrieval paradigms Conceptual exploration Conceptual query Simple pattern matching „TREE“ Thematic exploration 9

  10. Levels of interoperability „TREE“ Enhanced conceptual interoperability Conceptual interoperability Basic interoperability 10

  11. Basic interoperability Simple pattern matching „TREE“ Features • Easy implementation • No indexing languages required • Limited access and limited search functionalities • No modification / expansion possible Methods • Mapping on word level • Unspecified one-to-one equivalences represented in a simple cross-concordance. 11

  12. Basic interoperability Simple pattern matching

  13. Conceptual interoperability Conceptual query Features • Focus on the conceptual level • Multiple access points via synonyms • Structural transparency • Simple expansion strategies Methods • Mapping concepts independently from their actual representation in the various indexing languages. • Structural and typological differences should be taken into account. 13

  14. Conceptual interoperability Conceptual query

  15. Enhanced conceptual interoperability Conceptual exploration Features • Modification / expansion of queries • Conceptual exploration of a knowledge field • Query-clarification as a useful pre-search mechanism Requirements • Various types of expressive semantic relations have to be specified in great detail. • Well-structured relational inventories • Control- and selection-mechanisms to handle the complexity of the relational structure 15

  16. Enhanced conceptual interoperability Conceptual exploration Methods • Differentiated conceptual mappings • Interpretation of the semantically enhanced relational structure • Relations between concepts have to be specified 16

  17. Enhanced conceptual interoperability Conceptual exploration

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  21. Syn. Syn. SWS Syn. SWL Syn. Syn. Syn. Syn. Syn. SWSWD SWS SWLCSH SWL Syn. Core System*) SWS SWL SWL SWS Syn. Syn. Localized semantic networks with typed relations as link to the ontological spine Possible extensions with satellites Syn. SWR SWxy SWRameau Syn. Syn. Syn. Syn. SWR SWxy SWxy Syn. Syn. SWR SWR Syn. SWxy SWxy Syn. Syn. Syn.

  22. Thank you for your attention Prof. Winfried Gödert winfried.goedert@fh-koeln.de Felix Boteram Jessica Hubrich Institute of Information Management (IIM) Cologne University of Applied Sciences

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