Semantic Interoperability and Retrieval Paradigms Paradigms and conceptual systems in KO February...

Semantic Interoperability and Retrieval Paradigms

Paradigms and conceptual systems in KO

February 23, 2010 – February 26, 2010

Prof. Winfried GödertFelix Boteram Jessica Hubrich

2

Retrieval

Focussed search Expansion Exploration

3

Classifications Thesauri Semantic networks Ontologies

Knowledgeorganization

systems

Retrieval

Interoperability

4

Knowledgeorganization

systems

Retrieval

Technical Structural Semantic

Semantic interoperability

5

Semantic interoperability

6

Retrieval

7

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

Overall model for semantic interoperability

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SWSWDSWLCSH

SWRameau

SWS

SWS

SWS

Syn.SWL

SWL

Syn.

SWL

SWR

SWR

SWRSyn.

SWS

SWxy

SWxy

SWxy

SWxy

Syn.

SWxy

SWR

SWL

Localized semantic networkswith typed relations as link

to the ontological spine

Core System*)

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Possible extensionswith satellites

9

Retrieval paradigms

Simple pattern matching

Thematic exploration

Conceptual query

Conceptual exploration

„TREE“

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Levels of interoperability

Basic interoperability

Conceptual interoperability

Enhanced conceptual interoperability

„TREE“

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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.


Simple pattern matching „TREE“

12


Simple pattern matching

13

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.


Conceptual query

14


Conceptual query

15

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



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Methods

Differentiated conceptual mappings Interpretation of the semantically enhanced relational

structure Relations between concepts have to be specified



17



21

SWSWDSWLCSH

SWRameau

SWS

SWS

SWS

Syn.SWL

SWL

Syn.

SWL

SWR

SWR

SWRSyn.

SWS

SWxy

SWxy

SWxy

SWxy

Syn.

SWxy

SWR

SWL

Localized semantic networkswith typed relations as link

to the ontological spine

Core System*)

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Syn.

Possible extensionswith satellites

Thank you for your attention

Prof. Winfried Gödert

[email protected]

Felix Boteram

Jessica Hubrich

Institute of Information Management (IIM)

Cologne University of Applied Sciences

Semantic Interoperability and Retrieval Paradigms Paradigms and conceptual systems in KO February...

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