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Ontology-based representation for accessible OpenCourseWare systems

: Elias, Mirette; Lohmann, Steffen; Auer, Soeren

Volltext urn:nbn:de:0011-n-5240013 (694 KByte PDF)
MD5 Fingerprint: f579baf81672eae266c52f40f603e276
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Erstellt am: 14.12.2018

Information 9 (2018), Nr.12, Art. 302, 12 S.
ISSN: 2078-2489
European Commission EC
H2020; 688095; SlideWiki
Large-scale pilots for collaborative OpenCourseWare authoring, multiplatform delivery and Learning Analytics
Bundesministerium für Bildung und Forschung BMBF
01PE17004D; InclusiveOCW
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IAIS ()
OpenCourseWare; OCW; ACCESSIBLE; IMS AfA; ontologies; web accessibility

OpenCourseWare (OCW) systems have been established to provide open educational resources that are accessible by anyone, including learners with special accessibility needs and preferences. We need to find a formal and interoperable way to describe these preferences in order to use them in OCW systems and retrieve relevant educational resources. This formal representation should use standard accessibility definitions of OCW that can be reused by other OCW systems to represent accessibility concepts. In this article, we present an ontology to represent the accessibility needs of learners with respect to the IMS AfA specifications. The ontology definitions together with rule-based queries are used to retrieve relevant educational resources. Related to this, we developed a user interface component that enables users to create accessibility profiles representing their individual needs and preferences based on our ontology. We evaluated the approach with five examples profiles.