Ontological modeling of educational resources: a proposed implementation for Greek schools
Tóm tắt
In eLearning context searching for suitable educational material is still a challenging issue. During the last two decades, various digital repositories, such as Learning Object Repositories, institutional repositories and latterly Open Educational Resources, have been developed to accommodate collections of learning material that can be used for instructive and research purposes. In order to make this learning material publicly available through internet searching mechanisms, it has to be enriched with metadata. Nowadays, emerging Web 3.0 applications necessitate further enhancing learning resources with semantic knowledge to facilitate conceptually searching. Adding semantic value to educational resources could be achieved by modeling ontologically the metadata profile which describes them. The purpose of this work is to demonstrate the process of enhancing semantically learning resources by developing a new ontology and a prototype system to accommodate them. The designed ontology is originated from a metadata profile which is build according to the guidelines posed by Singapore Framework for Dublin Core Application Profiles. We focus on educational material for teaching courses on Informatics in primary and secondary education in Greece but the methodology and mechanism introduced could be easily adapted in any domain-specific setting.
Tài liệu tham khảo
Abdul Karim, A.-H., Chaudhry, A.-S., & Khoo, C.-S. (2007). Learning objects application profile for granularity and reusability: Integrating Dublin Core with IEEE-LOM. In Proceedings of the 2007 International Conference on Dublin Core and Metadata Applications: Application Profiles: theory and practice (pp. 116–122). Dublin Core Metadata Initiative.
Al-Khalifa, H.-S., & Davis, H.-C. (2006). The evolution of metadata from standards to semantics in E-learning applications. In Proceedings of the 7th conference on Hypertext and hypermedia (pp. 69–72). ACM.
ANSI/NISO. (2013). The Dublin Core Metadata Element Set (ANSI/NISO Z39.85–2012)
Arabshian, K., Dickmann, C., & Schulzrinne, H. (2009). Ontology-Based Service Discovery Front-End Interface for GloServ. Proceeding of the 6th European Semantic Web Conference, ESWC 2009, Heraklion, Crete, Greece, May 31–June 4, 2009 (pp.684–694).
Barker, P., & Campbell, L. (2010). Metadata for learnning materials: an overview of existing standards and current developments. Technology, Instruction, Cognition and Learning, 7(3–4), 225–243.
Barker, P., & Campbell, L. (2014). Learning Resource Metadata Initiative: using schema.org to describe open educational resource. Retrieved May 20, 2016 from http://publications.cetis.org.uk/2014/954.
Berners-Lee, T. (1997). Metadata architecture. Retrieved May 20, 2016 from https://www.w3.org/DesignIssues/Metadata.html
Berners-Lee, T., Hendler, J., & Lassila, O. (2001). The semantic web. Scientific American, 284(5), 34–43.
Bingimlas, K. A. (2009). Barriers to the successful integration of ICT in teaching and learning environments: A review of the literature. Eurasia Journal of Mathematics, Science & Technology Education, 5(3), 235–245.
Bizer, C., Heath, T., & Berners-Lee, T. (2009). Linked data - the story so far. International Journal on Semantic Web and Information Systems, 5(3), 1–22.
Boyle, T. (2003). Design principles for authoring dynamic, reusable learning objects. Australian Journal of Educational Technology, 19(1), 46–58.
Churchill, D. (2007). Towards a useful classification of learning objects. Educational Technology Research and Development, 54(5), 479–497.
Coyle, K., & Baker, T. (2009). Guidelines for Dublin Core application profiles. Retrieved May 20, 2016 from http://dublincore.org/documents/profile-guidelines
DC-Ed. (n.d.). Dublin Core Education Application Profile (working draft). Retrieved May 20, 2016 from http://dublincore.org/moinmoin-wiki-archive/educationwiki/pages/DC_2dEducation_20Application_20Profile.html
DCMI. (n.d.). Dublin Core metadata initiative. Available on http://dublincore.org/
Dietze, S., Sanchez-Alonso, S., Ebner, H., Yu, H.-Q., Giordano, D., Marenzi, I., & Nunes, B.-P. (2013). Interlinking educational resources and the web of data: a survey of challenges and approaches. Program, 47(1), 60–91.
Downes, S. (2001). Learning objects: resources for distance education worldwide. The International Review Of Research In Open And Distributed Learning, 2(1). Retrieved May 20, 2016, from http://www.irrodl.org/index.php/irrodl/article/view/32/378
Drozdowicz, M.-G. (2012). OntoPlay – a flexible user-interface for ontology-based systems. CEUR Workshop Proceedings.
Duval, E., Hodgins, W., Sutton, S., & Weibel, S. L. (2002). Metadata principles and practicalities. D-lib Magazine, 8(4), 16.
Gennari, J.-H., Musen, M.-A., Fergerson, R.-W., Grosso, W.-E., Crubézy, M., Eriksson, H., Noy, N.-F., & Tu, S.-W. (2003). The evolution of Protégé: an environment for knowledge-based systems development. International Journal of Human-Computer Studies, 58(1), 89–123.
Harper, C. (2010). Dublin Core metadata initiative: beyond the element set. Information Standards Quarterly, 22(1), 20. Retrieved May 20, 2016, from http://www.niso.org/apps/group_public/download.php/3670/FE_DCMI_Harper_isqv22no1.pdf
Hsu, I.-C. (2012). Intelligent discovery for learning objects using semantic web technologies. Educational Technology & Society, 15(1), 298–312.
IEEE (2002). Draft standard for learning object metadata. New York: Institute of Electrical and Electronics Engineers/.
ISO/IEC. (2010). Metadata for Learning Resources, Part 1: Framework. Retrieved on May 19, 2015, from http://standards.iso.org/ittf/PubliclyAvailableStandards/c050772_ISO_IEC_19788-1_2011.zip
Johnson, L., Adams Becker, S., Estrada, V., Freeman, A., A., Kampylis, P., Vuorikari, R., & Punie, Y. (2014). The NMC Horizon Report Europe: 2014 Schools Edition. Publications Office of the European Union, & Austin. Texas: The New Media Consortium.
Kontokostas, D., Bratsas, C., Auer, S., Hellmann, S., Antoniou, I., & Metakides, G. (2011). Towards Linked Data Internationalization - Realizing the Greek DBpedia. ACM Web Science.
Koutsomitropoulos, D.-A., Solomou, G.-D., Papatheodorou, T.-S., & Alexopoulos, A.-D. (2010). The use of metadata for educational resources in digital repositories: practices and perspectives. D-Lib Magazine, 16(1), 3.
Kraan, W. (2003). No one standard will suit all. The Centre for Educational Technology Interoperability Standards. Retrieved May 20, 2016, from http://zope.cetis.ac.uk/content/20030513175232.
McClelland, M. (2003). Metadata standards for educational resources. Computer, 36(11), 107–109.
McGreal, R. (2004). Learning objects: a practical definition. International Journal of Instructional Technology and Distance Learning, 1(9), 21–23.
Nilsson, M., Baker, T., & Johnston P. (2008a). The Singapore Framework for Dublin Core Application Profiles. Available at http://dublincore.org/documents/singapore-framework
Nilsson, M., Powell, A., Johnston, P., & Naeve, A. (2008b). Expressing Dublin Core metadata using the resource description framework (RDF). DCMI Recommendation. Available at http://www.dublincore.org/documents/dc-rdf.
OECD (2007). Giving knowledge for free: the emergence of open educational resources. Paris: OECD Publishing. doi:10.1787/9789264032125-en.
OpenLink, S. (2015). Deploying Linked Data. Retrieved May 20, 2016, from http://virtuoso.openlinksw.com/whitepapers/deploying%20linked%20data.html
Papadakis, N., Stravoskoufos, K., Baratis, E., Petrakis, G. E., & Plexousakis, D. (2011). Proton: a prolog reasoner for temporal ontologies. Expert Systems with Application, 38(12), 14660–14667.
Polsani, P. (2003). Use and abuse of reusable learning objects. Journal of Digital Information, 3(4). Retrieved May 20, 2016, from: https://journals.tdl.org/jodi/index.php/jodi/article/view/89/88.
NISO Press. (2004). Understanding Metadata. Retrieved May 20, 2016, from http://www.niso.org/publications/press/UnderstandingMetadata.pdf
Prestridge, S. (2012). The beliefs behind the teacher that influences their ICT practices. Computers & Education, 58(1), 449–458.
Protégé. (2016). Protégé. http://protege.stanford.edu
Prud’hommeaux, E., & Seaborne, A.. (2008). “SPARQL query language for RDF.” W3C Recommendation. Retrieved May 20, 2016,, from https://www.w3.org/TR/rdf-sparql-query.
Roy, D., Sarkar, S., & Ghose, S. (2010). A comparative study of learning object metadata, learning material repositories, metadata annotation & an automatic metadata annotation tool. In Joshi, Boley & Akerbar (Eds.). Advances in Semantic Computing, 2(2010), 103–126.
ACM Taxonomy. (2012). The 2012 ACM Computing Classification System. Retrieved May 20, 2016, from http://www.acm.org: http://www.acm.org/about/class/2012
UNESCO (2012). OER Declaration. Retrieved May 20, 2016, from www.unesco.org/new/fileadmin/MULTIMEDIA/HQ/CI/CI/pdf/Events/Paris%20OER%20Declaration_01.pdf
UNESCO (2014). UNESCO Education Strategy 2014–2021. Retrieved May 20, 2016, from http://unesdoc.unesco.org/images/0023/002312/231288e.pdf
W3C (2012). OWL 2 web ontology language document overview. Retrieved May 20, 2016, from https://www.w3.org/TR/owl2-overview.
W3C (2015a). Semantic Web. Available at https://www.w3.org/standards/semanticweb/
W3C (2015b). Vocabularies. Retrieved May 20, 2016, from http://www.w3.org/standards/semanticweb/ontology
W3C wiki. (2015). Good ontologies. Retrieved May 20, 2016, from https://www.w3.org/wiki/Good_Ontologies
Wiley, D.-A. (2001). Connecting learning objects to instructional design theory: A definition, a metaphor, and a taxonomy. In D.-A. Wiley (Ed.), The instructional use of learning objects (pp. 1–35). Retrieved May 20, 2016, from http://www.reusability.org/read/chapters/wiley.doc.
Wiley, D.-A. (2007). The learning objects literature. Retrieved May 20, 2016, from http://www.opencontent.org/docs/wiley-lo-review-final.pdf