Transcript Intersystem Relations: Characteristics and Functionalities Jessica Hubrich CrissCross Project Cologne University of Applied Sciences Institute of Information Management Concepts in Context – Cologne Conference on Interoperability.

Intersystem Relations:
Characteristics and Functionalities
Jessica Hubrich
CrissCross Project
Cologne University of Applied Sciences
Institute of Information Management
Concepts in Context – Cologne Conference on Interoperability and Semantics in KO
July 19, 2010
Interoperability
Models
Retrieval Paradigms
Levels based on
• Type of access point in query
formulation
• Characteristics of concept scheme
• Methods of indexing
Thematic Search
Conceptual Exploration
Conceptual Query
„TREE“
Word-based Query
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Cologne July 19, 2010
Interoperability
Models
Retrieval Paradigms
• Strings as access points
Thematic Search
Conceptual Exploration
Conceptual Query
„TREE“
Word-based Query
[email protected]
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Cologne July 19, 2010
Interoperability
Models
Retrieval Paradigms
• Concepts (Controlled headings and
their synonyms) as access points
Thematic Search
Conceptual Exploration
Conceptual Query
„TREE“
Word-based Query
[email protected]
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Cologne July 19, 2010
Cologne July 19, 2010
Interoperability
Models
Retrieval Paradigms
• Concepts (controlled headings and
their synonyms) as access points
• Display of (document-independent)
a priori relations to support processes
of knowledge exploration
Thematic Search
Conceptual Exploration
Conceptual Query
„TREE“
Word-based Query
[email protected]
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Cologne July 19, 2010
Interoperability
Models
Retrieval Paradigms
• Controlled headings and their
synonyms as access points
Thematic Search
• Display of (document-independent)
a priori relations and (document
specific) a posteriori relations to
support processes of knowledge
exploration
Conceptual Exploration
Conceptual Query
„TREE“
Word-based Query
[email protected]
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Cologne July 19, 2010
Retrieval Paradigms
Semantic interoperability
Differentiated
in
interoperability
Conceptual Exploration
Conceptual
interoperability
Conceptual Query
Word-based
interoperability
„TREE“
Word-based Query
[email protected]
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Cologne July 19, 2010
„TREE“
Word-based Interoperability
Word-based Query
Level based on
• Strings as access points
• Mapping method: automatic pattern matching
• Interoperability based on the formal representation of concepts, mainly main
headings and not synonyms
• Reference points:
a. Strings of main headings as they are stored in concept schemes
b. Strings of main headings that are assigned to documents as part of the topical
description
c. Consideration of the relational structure
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Cologne July 19, 2010
„TREE“
Word-based Interoperability
Word-based Query
Level based on
• Strings as access point
• Unspecified one-to-one-mappings which are not directed and primarily used for
automatic search expansion
• Useful enhanced access points which lack precision; enhanced access reduced to
word-based queries
• Conceptual queries limited to concepts of the knowledge organization system
• No additional support for explorative processes
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Cologne July 19, 2010
Conceptual Interoperability
Conceptual Query
Level based on
• Concepts as access point
• Mapping method: intellectual
• Interoperability based on concepts as they are stored in the indexing language with
consideration of their a priori relations
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Cologne July 19, 2010
Conceptual Interoperability
Conceptual Query
Level based on
• Concepts as access point
• Directed One-to-one or one-to-many mappings (bidirectional, unidirectional)
• Precise enhanced access points to support conceptual queries
• Possibly advanced support of processes of knowledge exploration in respect to a
single concept scheme
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Cologne July 19, 2010
Conceptual Interoperability
Enhancement of
relational structures
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Conceptual Query
SWD-DDC mapping
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Cologne July 19, 2010
Cologne July 19, 2010
Conceptual Interoperability
Enhancement of
relational structures
[email protected]
Conceptual Query
SWD-DDC mapping
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Cologne July 19, 2010
Conceptual Interoperability
Differentiation of
relational structures
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Conceptual Exploration
SWD-DDC mapping
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Cologne July 19, 2010
Cologne July 19, 2010
Conceptual Interoperability
Differentiation of
relational structures
[email protected]
Conceptual Exploration
SWD-DDC mapping
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Cologne July 19, 2010
Cologne July 19, 2010
Conceptual Interoperability
Differentiation of
relational structures
[email protected]
Conceptual Exploration
SWD-DDC mapping
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Cologne July 19, 2010
Differentiated Interoperability
Conceptual
Exploration
• Concepts (controlled headings and their synonyms) as access points
• A priori relations to support processes of knowledge exploration
• Mapping method: intellectual
• Prerequisite: Conceptual interoperability
• Differentiated intersystem relations
!the more expressivity of intersystem relations, the more functionality!
– CrissCross
intersystem relations adjusted to the undirectional mapping approach and the characteristics of
the connected indexing languages (SWD,DDC), primarily for ranking mechanisms
versioning of the mapping relation by adding a time stamp to
the mapping to guarantee precise transition over time even
when the meaning of concepts have changed or concepts have
been relocated and hence the relation has changed
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Cologne July 19, 2010
Differentiated Interoperability
Conceptual
Exploration
• Concepts (controlled headings and their synonyms) as access points
• A priori relations to support processes of knowledge exploration
– SKOS
mapping types as mirror of common (bidirectional) thesauri relationships with assigned logical
properties to draw inferences
MappingRelations
ExactMatch: symmetric, transitive – concepts can be used interchangeably
CloseMatch: symmetric – interchangeability in some information retrieval applications
BroadMatch: inverse to NarrowMatch (and vice versa)– hierarchical mapping link
RelatedMatch: symmetric – associative mapping link
Problem:
In order to be able to draw inferences, the structures of the connected indexing language have to
be considered together with the mapping relations to guarantee a consistent formal logic relational
structure – but many concept schemes do not have such a structure
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Cologne July 19, 2010
Cologne July 19, 2010
Differentiated Interoperability
Conceptual
Exploration
• Concepts (controlled headings and their synonyms) as access points
• A priori relations to support processes of knowledge exploration
• Differentiated intersystem relations primarily promote a precise transition from
one concept scheme to another; structural and typological differences are still a
problem
• Additional support for extensive explorative processes can be provided by
adjustment of concept schemes with means of internationalization and localization
Internationalization
Process of generalizing / delocalizing a KOS with reference to the representation of concepts and their
semantic relations so that it can handle multiple languages and viewpoints
Localization
Process of modifying KOS in regard to the local information needs. It involves the adequate translation of
the internationalized concepts into the specific language as well as the enhancement and elaboration of
local / national concepts and semantic relations in a local KOS
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Cologne July 19, 2010
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Thank you for your attention
Website CrissCross Project
http://linux2.fbi.fh-koeln.de/crisscross/index.html
Project Team at the
Cologne University of Applied Sciences
Prof. Winfried Gödert
Jessica Hubrich
Jan-Helge Jacobs
Tina Mengel
Katrin Müller
[email protected]
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Cologne July 19, 2010