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A Mashup-friendly Resource and Metadata Management Framework
KTH, School of Computer Science and Communication (CSC), Media Technology and Graphic Arts, Media (closed 20111231). School of Computer Science and Communication (CSC), Centres, KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Sustainable Communications, CESC.ORCID iD: 0000-0002-3869-5413
KTH, School of Computer Science and Communication (CSC), Media Technology and Graphic Arts, Media (closed 20111231).
2008 (English)In: Mash-Up Personal Learning Environments (MUPPLE'08): Workshop in Conjunction with the 3rd European Conference on Technology-Enhanced Learning (ECTEL'08): Times of Convergence / [ed] Wild, Kalz, Palmér, 2008, 48-56 p.Conference paper, Published paper (Refereed)
Abstract [en]

Mashups and mashed up Personal Learning Environments require easy to use frameworks to support the ease of creation of effective services.

The focus of this paper1 lies on establishing a generic and mashup-friendly resource and metadata management. The assumption is that if we can find an appropriate level of generic functionality, the development of targeted tools (e.g. e-portfolios, PLEs, etc) will become a matter of user interface design and specialization. We hope that such a framework does not result in a single implementation but rather a wide variety of interoperable systems that leverage plenty of functionality. In this paper we look at already existing standards and initiatives and show why they are not sufficiently generic. We propose a framework and take recent developments into consideration. We also show an implementation and introduce a tangible use case.

 

Place, publisher, year, edition, pages
2008. 48-56 p.
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-50182Scopus ID: 2-s2.0-84885217850OAI: oai:DiVA.org:kth-50182DiVA: diva2:461220
Conference
1st Workshop MUPPLE'08. Maastricht, The Netherlands. September 17, 2008
Note

QC 20111207

Available from: 2011-12-02 Created: 2011-12-02 Last updated: 2014-04-17Bibliographically approved
In thesis
1. Learning Applications based on Semantic Web Technologies
Open this publication in new window or tab >>Learning Applications based on Semantic Web Technologies
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The interplay between learning and technology is a growing field that is often referred to as Technology Enhanced Learning (TEL). Within this context, learning applications are software components that are useful for learning purposes, such as textbook replacements, information gathering tools, communication and collaboration tools, knowledge modeling tools, rich lab environments that allows experiments etc. When developing learning applications, the choice of technology depends on many factors. For instance, who and how many the intended end-users are, if there are requirements to support in-application collaboration, platform restrictions, the expertise of the developers, requirements to inter-operate with other systems or applications etc.

This thesis provides guidance on a how to develop learning applications based on Semantic Web technology. The focus on Semantic Web technology is due to its basic design that allows expression of knowledge at the web scale. It also allows keeping track of who said what, providing subjective expressions in parallel with more authoritative knowledge sources. The intended readers of this thesis include practitioners such as software architects and developers as well as researchers in TEL and other related fields.

The empirical part of the this thesis is the experience from the design and development of two learning applications and two supporting frameworks. The first learning application is the web application Confolio/EntryScape which allows users to collect files and online material into personal and shared portfolios. The second learning application is the desktop application Conzilla, which provides a way to create and navigate a landscape of interconnected concepts. Based upon the experience of design and development as well as on more theoretical considerations outlined in this thesis, three major obstacles have been identified:

The first obstacle is: lack of non-expert and user friendly solutions for presenting and editing Semantic Web data that is not hard-coded to use a specific vocabulary. The thesis presents five categories of tools that support editing and presentation of RDF. The thesis also discusses a concrete software solution together with a list of the most important features that have crystallized during six major iterations of development.

The second obstacle is: lack of solutions that can handle both private and collaborative management of resources together with related Semantic Web data. The thesis presents five requirements for a reusable read/write RDF framework and a concrete software solution that fulfills these requirements. A list of features that have appeared during four major iterations of development is also presented.

The third obstacle is: lack of recommendations for how to build learning applications based on Semantic Web technology. The thesis presents seven recommendations in terms of architectures, technologies, frameworks, and type of application to focus on.

In addition, as part of the preparatory work to overcome the three obstacles, the thesis also presents a categorization of applications and a derivation of the relations between standards, technologies and application types.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2012. vi, 95 p.
Series
Trita-CSC-A, ISSN 1653-5723 ; 2012:13
Keyword
Semantic Web, Linked Data, Web Applications, Technology Enhanced Learning, REST
National Category
Communication Systems Interaction Technologies
Identifiers
urn:nbn:se:kth:diva-104446 (URN)978-91-7501-534-7 (ISBN)
Public defence
2012-11-22, F3, Lindstedsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20121105

Available from: 2012-11-05 Created: 2012-11-02 Last updated: 2012-11-05Bibliographically approved
2. Supporting loose forms of collaboration: Using Linked Data to realize an architecture for collective knowledge construction
Open this publication in new window or tab >>Supporting loose forms of collaboration: Using Linked Data to realize an architecture for collective knowledge construction
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis is driven by the motivation to explore a way of working collaboratively that closely reflects the World Wide Web (WWW), more specifically the potential of the Web architecture built on Semantic Web technologies and Linked Data. The goal is to describe a generic approach and architecture that satisfies the needs for loose collaboration and collective knowledge construction as exemplified by the applications described in this thesis. This thesis focuses on a contribution-centric architecture which allows for flexible applications that support loose forms of collaboration.

The first research question deals with how Web-based collective knowledge construction can be supported. The second research question explores the characteristics of collective knowledge construction with respect to the Open World Assumption (OWA). The OWA implies that complete knowledge about a subject cannot be assumed at any time, which is one of the most fundamental properties of the WWW. The third research question investigates how Semantic Web technologies be used in order to support such a contribution-centric architecture.

The thesis and its underlying publications are of a technical character and are always grounded in theoretical models and considerations that have led to functional implementations. The research has evolved in iterative development processes and was explicitly directed at building applications that can be used in collaborative settings and that are based on standardized Web technologies. One of the main outcomes, an information model, was developed together with such an application and provides a number of novel approaches in the context in which it was designed.

The validity of the presented research is supported by evaluations from different perspectives: a list of implemented applications and showcases, results from structured interviews that have investigated the suitability for various resource annotation processes, as well as scalability aspects.

The thesis concludes that it is ultimately up to the application how "loose" the collaboration should be and to which extent the OWA is incorporated. The presented architecture provides a toolkit to support the development of loosely collaborative applications. The showcased applications allow the construction of collaborative conceptual models and to collaboratively annotate educational resources. They show the potential of the used technology stack and the introduced contribution-centric architecture that sits on top if it.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2014. x, 67 p.
Series
TRITA-CSC-A, ISSN 1653-5723 ; 2014:05
Keyword
linked data, collaboration, information model, contribution, application architecture, web application, web standards, www, open world assumption
National Category
Information Systems
Research subject
Information and Communication Technology; Media Technology; Computer Science
Identifiers
urn:nbn:se:kth:diva-144311 (URN)978-91-7595-087-7 (ISBN)
Public defence
2014-05-22, F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20140417

Available from: 2014-04-17 Created: 2014-04-16 Last updated: 2014-05-13Bibliographically approved

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