Interoperability for Searching Learning Object Repositories

Ternier, Stefaan; Duval, Erik; Massart, David; Campi, Alessandro; Guinea, Sam; Ceri, Stefano

doi:10.1045/january2008-ceri

Cited by 37 publications

(31 citation statements)

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“…However, several integration issues need to be taken into account, for instance secure low-layer communication between repositories [11] and federated querying of the repositories in the network [10]. It is clear that the easiest scenario includes a number of homogeneous repositories which can, in the best case, seamlessly interconnect forming a robust network.…”

Section: Related Workmentioning

confidence: 99%

“…For instance, the GLOBE [9][35] initiative allows to express a query by connecting to a centralized point which then propagates it to a federated set of appropriately configured repositories included in the network [10]. The relatively old project Merlot [4] is an example in which several academic institutions collaborated to form a vast homogeneous repository of ready-to-use contents for faculty and students.…”

Section: Related Workmentioning

confidence: 99%

“…The latest trend is to use Unified E-learning Repositories (UER) that attempt to simplify sharing resources between different institutions using a single access point and solution [8]. However, several integration issues need to be solved, in particular for distributed searches [9], [10] and communication between repositories [11].Interoperability requires a common framework both for interfaces and queries. The Simple Query Interface (SQI) [12] layer is a tentative to introduce a standard framework which has been adopted by many LORs.…”

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A New Architecture for Cross-Repository Creation and Sharing of Educational Resources

Favario

Masala

2017

Int. J. Emerg. Technol. Learn.

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Abstract-A large amount of educational resources are currently available in the Internet, covering educational needs for many school grades. However, using such wealth of material, typically dispersed in several repositories, in a simple and effective way, is rather challenging due to the difficulties encountered by teachers in learning the peculiar access and operational procedures that each repository system requires. Therefore, it is important to provide the teachers with a centralized, integrated, simple system that can address most of their needs so that every operation (search, edit, share, download) can be done from a single location. This work follows this direction by designing and presenting both an architecture to integrate different repository systems using the Content Management Interoperability Services (CMIS) API and an integration layer that provides a simple web interface suitable for the needs of both the content creators (teachers) and the users of the contents (learners). Results have been evaluated both quantitatively, i.e., using performance indicators such as response time, and qualitatively, on the basis of the user experience evaluated through a questionnaire. Both type of results show that the platform adequately addresses user needs therefore it has the potential to be embraced by a large user community. Keywords-computer uses in education, e-learning tools, CMIS, open source IntroductionIn the latest years the interest for e-learning systems is steadily increasing due to the many advantages they are expected to deliver, e.g., lower costs, better course adaptation for students, remote delivery, etc. The abundance of such software suites led to the current situation in which there is a strong fragmentation in the e-learning software suites adopted by even very similar education institutions [7]. For instance, our university relies on Alfresco while the other university in the same city is using Nuxeo. Clearly, a situation in which each institution proceeds on its own is not ideal since network and saving effects cannot be exploited. The Italian Ministry of Education, for instance, is pushing towards unification efforts by supporting projects for the creation of mini-portals and similar initiatives. However, a large amount of material has been made available in each of those institutional repositories and it would be desirable to be able to reuse it, without waiting for major infrastructure changes, through simple means, e.g., uniform access platforms and interfaces.Some solutions trying to address the fragmentation and heterogeneity of repositories have been proposed in the past. The latest trend is to use Unified E-learning Repositories (UER) that attempt to simplify sharing resources between different institutions using a single access point and solution [8]. However, several integration issues need to be solved, in particular for distributed searches [9], [10] and communication between repositories [11].Interoperability requires a common framework both for interfaces and queries. The...

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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confidence: 99%

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A New Architecture for Cross-Repository Creation and Sharing of Educational Resources

Favario

Masala

2017

Int. J. Emerg. Technol. Learn.

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“…The basic functioning of a SQI interface is trivial; it is based on web services through which a client queries a LOR, usually in Very Simple Query Language (VSQL) [10] or Prolean Query Languaje (PLQL) [12]. The LOR then returns the LOs, usually packaged according to the LOM standard.…”

Section: Fig 1 Learning Objects Interoperability Frameworkmentioning

confidence: 99%

Hybrid Multiagent System for Automatic Object Learning Classification

Gil

Prieta

López

2010

Lecture Notes in Computer Science

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Abstract. The rapid evolution within the context of e-learning is closely linked to international efforts on the standardization of learning object metadata, which provides learners in a web-based educational system with ubiquitous access to multiple distributed repositories. This article presents a hybrid agent-based architecture that enables the recovery of learning objects tagged in Learning Object Metadata (LOM) and provides individualized help with selecting learning materials to make the most suitable choice among many alternatives.

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“…The LO dataset was taken after making 60 queries to different repositories because according to [20] the access LOs can take advantage of queries upon metadata for selecting the objects that are most suited to the needs of learners or teachers. In addition, many LOs include textual material that can be indexed, and such indexes can also be used to filter the objects by matching them against user-provided keywords.…”

Section: Experimental Workmentioning

confidence: 99%

A System for Multi-label Classification of Learning Objects

Batista

Pintado

Gil

et al. 2011

Advances in Intelligent and Soft Computing

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The rapid evolution within the context of e-learning is closely linked to international efforts on the standardization of Learning Object (LO), which provides ubiquitous access to multiple and distributed educational resources in many repositories. This article presents a system that enables the recovery and classification of LO and provides individualized help with selecting learning materials to make the most suitable choice among many alternatives. For this classification, it is used a special multi-label data mining designed for the LO ranking tasks. According to each position, the system is responsible for presenting the results to the end user. The learning process is supervised, using two major tasks in supervised learning from multi-label data: multi-label classification and label ranking.

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Interoperability for Searching Learning Object Repositories

Cited by 37 publications

References 0 publications

A New Architecture for Cross-Repository Creation and Sharing of Educational Resources

A New Architecture for Cross-Repository Creation and Sharing of Educational Resources

Hybrid Multiagent System for Automatic Object Learning Classification

A System for Multi-label Classification of Learning Objects

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