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Contextual Metadata in Practice
Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering. (CeLeKT)
2009 (English)In: The First International Conference on Advances in Multimedia, 2009, p. 12-17Conference paper, Published paper (Refereed)
Abstract [en]

This article aims to survey the scene of contextual metadata annotation of digital content. This is performed through a literature review of current research, looking closer at formal context models, contextual metadata gathering and contextual metadata formalisation respectively. The findings of these efforts indicate that the reviewed context models have three elements of context in common. However, these formal models are inconsistent with the contextual metadata gathered in approaches described in the reviewed literature, in which location metadata are the most common. Furthermore, contextual metadata gathered in these initiatives end up in a variety of data structures. One reason for the dominance of location metadata might be the clear understanding of their ontological dimension. Therefore, the author introduces the notion of ontological dimensions in the area of contextual metadata. The proposed notion of conceiving contextual metadata as a set of ontological dimensions makes it possible to divide the endeavour of formalising elements of context into manageable information chunks. Through identifying and reaching a consensus of the constituent parts of these dimensions, it is the belief of the author that we are well on our way towards improved interoperability, metadata interpretability and digital content reusability facilitated by contextual metadata.

Place, publisher, year, edition, pages
2009. p. 12-17
Keyword [en]
contextual metadata, metadata annotation, digital content reusability
National Category
Computer Sciences
Research subject
Computer and Information Sciences Computer Science, Media Technology
Identifiers
URN: urn:nbn:se:vxu:diva-6809DOI: 10.1109/MMEDIA.2009.10ISBN: 978-0-7695-3693-4 (print)OAI: oai:DiVA.org:vxu-6809DiVA, id: diva2:287921
Available from: 2010-01-20 Created: 2010-01-20 Last updated: 2018-01-12Bibliographically approved
In thesis
1. Promoting Semantic Interoperability of Contextual Metadata for Learner Generated Digital Content
Open this publication in new window or tab >>Promoting Semantic Interoperability of Contextual Metadata for Learner Generated Digital Content
2010 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Technological advancements in computing have led to a reality where computational devices are more mobile, connected and context aware than ever before. Several of these devices are primarily designed for or support the creation of digital content via built-in or attachable sensors, e.g. mobile phones. The portability and connectivity of mobile devices make them suitable tools to support learning experiences; their features can be used to generate digital content and metadata related to the particular learning situation. These types of objects, referred to as Emerging Learning Objects (ELOs), introduce challenges in terms of metadata enrichment as their metadata should reflect aspects related to the particular learning situation in which they were created to be properly indexed. A claim made in this thesis is that semantic interoperability of ELO metadata is an integral concern that needs to be explored in order to benefit from these metadata outside custom tailored applications and systems. Therefore, the main research question explored in this thesis focuses on the ability to enrich ELOs with semantically interoperable contextual metadata.

This thesis is comprised of a collection of five peer-reviewed articles that describe interrelated stages of research in pursuit of an answer to the main research question. The overall research process consisted of three main stages: a literature review; the development a system artefact; and the exploration of the technological solution (Linked Data) applied in the system artefact. An instantiation of the Unified Process guided the development of the system artefact.

The outcomes of these activities provide insights on how to perceive the relationship between context and contextual metadata, as well as properties related to a particular technological solution, namely data distribution, flexibility and expressivity. In order to decouple the findings from a particular instance of technology, a generalization effort in the analysis identified two generic factors that affect the semantic interoperability of metadata: the level of ontological consensus and the level of metadata expressivity. The main conclusion of this thesis is that until the constituent parts of context are agreed upon, metadata expressivity is an important feature for promoting semantic interoperability of ELO contextual metadata.Technological advancements in computing have led to a reality where computational devices are more mobile, connected and context aware than ever before. Several of these devices are primarily designed for or support the creation of digital content via built-in or attachable sensors, e.g. mobile phones. The portability and connectivity of mobile devices make them suitable tools to support learning experiences; their features can be used to generate digital content and metadata related to the particular learning situation. These types of objects, referred to as Emerging Learning Objects (ELOs), introduce challenges in terms of metadata enrichment as their metadata should reflect aspects related to the particular learning situation in which they were created to be properly indexed. A claim made in this thesis is that semantic interoperability of ELO metadata is an integral concern that needs to be explored in order to benefit from these metadata outside custom tailored applications and systems. Therefore, the main research question explored in this thesis focuses on the ability to enrich ELOs with semantically interoperable contextual metadata. This thesis is comprised of a collection of five peer-reviewed articles that describe interrelated stages of research in pursuit of an answer to the main research question. The overall research process consisted of three main stages: a literature review; the development a system artefact; and the exploration of the technological solution (Linked Data) applied in the system artefact. An instantiation of the Unified Process guided the development of the system artefact.The outcomes of these activities provide insights on how to perceive the relationship between context and contextual metadata, as well as properties related to a particular technological solution, namely data distribution, flexibility and expressivity. In order to decouple the findings from a particular instance of technology, a generalization effort in the analysis identified two generic factors that affect the semantic interoperability of metadata: the level of ontological consensus and the level of metadata expressivity. The main conclusion of this thesis is that until the constituent parts of context are agreed upon, metadata expressivity is an important feature for promoting semantic interoperability of ELO contextual metadata.

Place, publisher, year, edition, pages
Linnéuniversitetet, 2010
Keyword
metadata, contextual metadata, user-generated content
National Category
Computer Sciences
Research subject
Computer and Information Sciences Computer Science, Media Technology
Identifiers
urn:nbn:se:lnu:diva-8453 (URN)
Presentation
2010-08-25, D1136, Linnéuniversitetet, Växjö, 09:15 (English)
Opponent
Supervisors
Available from: 2010-09-16 Created: 2010-09-16 Last updated: 2018-01-12Bibliographically approved

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Svensson, Martin

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