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The LOM RDF Binding: principles and Implementation
KTH, School of Computer Science and Communication (CSC), Centres, Center for Useroriented IT Design, CID. (Knowledge Management Research Group)
KTH, School of Computer Science and Communication (CSC), Centres, Center for Useroriented IT Design, CID. (Knowledge Management Research Group)
Information System Institute, University of Hannover, Germany.
2003 (English)In: Proceedings of the Third Annual ARIADNE conference, Leuven Belgium, 2003, 2003Conference paper, Published paper (Refereed)
Abstract [en]

This paper will discuss some of the advantages andcomplexities in using the Resource Description Framework, RDF, toexpress learning object metadata following the IEEE LOM standard. Wewill describe some details of the current draft for a complete RDF bindingfor LOM and discuss some of the constructs used in that binding.We will then present a so-called SHAME Query Model of this bindingthat can be used to specify and visualize application profileconstraints when using this binding. A metadata editor for RDF-basedLOM metadata, which was built with the help of this Query model, willbe briefly introduced.

Place, publisher, year, edition, pages
2003.
Keyword [en]
metadata
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-25685OAI: oai:DiVA.org:kth-25685DiVA: diva2:359445
Conference
Third Annual ARIADNE conference, Leuven Belgium, 2003
Note
QC 20101028Available from: 2010-10-28 Created: 2010-10-27 Last updated: 2010-11-17Bibliographically approved
In thesis
1. From Interoperability to Harmonization in Metadata Standardization: Designing an Evolvable Framework for Metadata Harmonization
Open this publication in new window or tab >>From Interoperability to Harmonization in Metadata Standardization: Designing an Evolvable Framework for Metadata Harmonization
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Metadata is an increasingly central tool in the current web environment, enabling large-scale, distributed management of resources. Recent years has seen a growth in interaction between previously relatively isolated metadata communities, driven by a need for cross-domain collaboration and exchange. However, metadata standards have not been able to meet the needs of interoperability between independent standardization communities. For this reason the notion of metadata harmonization, defined as interoperability of combinations of metadata specifications, has risen as a core issue for the future of web-based metadata.

This thesis presents a solution-oriented analysis of current issues in metadata harmonization. A set of widely used metadata specifications in the domains of learning technology, libraries and the general web environment have been chosen as targets for the analysis, with a special focus on Dublin Core, IEEE LOM and RDF. Through active participation in several metadata standardization communities, a body of knowledge of harmonization issues has been developed.

The thesis presents an analytical framework of concepts and principles for understanding the issues arising when interfacing multiple standardization communities. The analytical framework focuses on a set of important patterns in metadata specifications and their respective contribution to harmonization issues:

  • Metadata syntaxes as a tool for metadata exchange. Syntaxes are shown to be of secondary importance in harmonization.

  • Metadata semantics as a cornerstone for interoperability. This thesis argues that the incongruences in the interpretation of metadata descriptions play a significant role in harmonization.

  • Abstract models for metadata as a tool for designing metadata standards. It is shown how such models are pivotal in the understanding of harmonization problems.

  • Vocabularies as carriers of meaning in metadata. The thesis shows how portable vocabularies can carry semantics from one standard to another, enabling harmonization.

  • Application profiles as a method for combining metadata standards. While application profiles have been put forward as a powerful tool for interoperability, the thesis concludes that they have only a marginal role to play in harmonization.

The analytical framework is used to analyze and compare seven metadata specifications, and a concrete set of harmonization issues is presented. These issues are used as a basis for a metadata harmonization framework where a multitude of metadata specifications with different characteristics can coexist. The thesis concludes that the Resource Description Framework (RDF) is the only existing specification that has the right characteristics to serve as a practical basis for such a harmonization framework, and therefore must be taken into account when designing metadata specifications. Based on the harmonization framework, a best practice for metadata standardization development is developed, and a roadmap for harmonization improvements of the analyzed standards is presented.

Place, publisher, year, edition, pages
Stockholm: KTH, 2010. x, 125 p.
Series
Trita-CSC-A, ISSN 1653-5723 ; 2010:15
Keyword
metadata, dublin core, IEEE LOM, RDF, semantic web, interoperability, standardization
National Category
Computer Science
Identifiers
urn:nbn:se:kth:diva-26057 (URN)978-91-7415-800-7 (ISBN)
Public defence
2010-12-15, Sal F3, Lindstedsvägen 26, KTH, Stockholm, 13:00 (English)
Opponent
Supervisors
Note
QC 20101117Available from: 2010-11-17 Created: 2010-11-10 Last updated: 2010-11-23Bibliographically approved

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