A learning object ontology repository to support annotation and discovery of educational resources using semantic thesauri

Abstract

Open educational resources are currently becoming increasingly available from a multitude of sources and are consequently annotated in many diverse ways. Interoperability concerns that naturally arise can often be resolved through the semantification of metadata descriptions, while at the same time strengthening the knowledge value of resources. SKOS can be a solid linking point offering a standard vocabulary for thematic descriptions, by referencing semantic thesauri. We propose the enhancement and maintenance of educational resources’ metadata in the form of learning object ontologies and introduce the notion of a learning object ontology repository that can help towards their publication, discovery and reuse. At the same time, linking to thesauri datasets and contextualized sources interrelates learning objects with linked data and exposes them to the Web of Data. We build a set of extensions and workflows on top of contemporary ontology management tools, such as WebProtégé, that can make it suitable as a learning object ontology repository. The proposed approach and implementation can help libraries and universities in discovering, managing and incorporating open educational resources and enhancing current curricula.

Integration of Open Educational Resources Using Semantic Platform

“…Finally, some works that present a proposal to describe educational resources considering metadata and incorporating semantic technologies are: the work presented by Koutsomitropoulos and Solomou [15], which propose the improvement and maintenance of educational resource metadata in the form of learning object ontologies and introduce the notion of a learning object ontology repository to aid publication, discovery and reuse of the resources. Reference [16] compares two approaches for generating metadata considering the OAI-PMH protocol and the institutional repository DSpace to incorporate linked data.…”

Análise de Repositórios de REAs em Relação ao Uso dos Padrões de Linked Open Data

“…Por exemplo, um dos problemas relatados na literatura a respeito da interoperabilidade entre repositórios de REAsé a falta de padronização dos metadados. Em [Koutsomitropoulos and Solomou 2018] foi apresentada a possibilidade de se utilizar ontologias, que são utilizadas em LOD, para facilitar a interligação de bases de dados.…”

Uso de repositórios de recursos educacionais abertos nas práticas pedagógicas: uma revisão sistemática

“…«O preenchimento dos metadados não são suficientes para a recuperação e utilização de REA de forma abrangente» (Koutsomitropoulos & Solomou, 2018 A categoria Resultados (RE) teve como objetivo identificar se os autores conseguiram alcançar seus objetivos propostos na pesquisa. Para um melhor entendimento essa categoria foi subdividida em 6 grupos, conforme apresentado no tabela 5.…”