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Using contextual metadata for enhanced reusability of mobile media objects
Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering. (CeLeKT)
Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering. (CeLeKT)ORCID iD: 0000-0003-0512-6350
2009 (English)In: Sharing Experiences with Social Mobile Media: Proceedings of the International Workshop in conjunction with MobileHCI 2009, 2009, p. 72-79Conference paper, Published paper (Refereed)
Abstract [en]

Mobile phones are becoming “sensor packed devices”. With this the possibilities for acquiring context has widened. As a result of this, new computing paradigms are emerging. Moreover, mobile phones enable anyone in their possession to be a potential creator of mobile media objects. All this is having impact in the way human activities are performed and has changed the “social mobile media” landscape. The emerging mobile media objects are usually created in an unanticipated way. The challenge in these settings is the interoperability and reusability of these emerging mobile media objects. Since there is no formal control over the creation of these mobile media objects, we consider that use of contextual metadata will be beneficial for addressing the issue of reusability. Inspired from our dimensional model of context we introduce a conceptual scheme for enhancing the reusability of mobile media objects. This scheme is based upon open standards technologies such as XML, XMLSchema, RDF and RDF Schema. To illustrate the usefulness of depicting emerging mobile media objects with contextual metadata, we introduce an experimental scenario in the learning domain.

Place, publisher, year, edition, pages
2009. p. 72-79
Keywords [en]
mobile devices, sensors, context, mobile media objects, reusability
National Category
Computer Sciences
Research subject
Computer and Information Sciences Computer Science, Media Technology
Identifiers
URN: urn:nbn:se:vxu:diva-6811ISBN: 978-952-15-2209-3 (print)OAI: oai:DiVA.org:vxu-6811DiVA, id: diva2:287938
Available from: 2010-01-20 Created: 2010-01-20 Last updated: 2019-05-20Bibliographically 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
Keywords
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, MartinKurti, Arianit

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