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Purpose – The paper aims to propose an effective method to process keyword‐based queries over graph‐structured databases which are widely used in various applications such as XML, semantic web, and social network services. To satisfy users' information need, it proposes an extended answer...
Purpose – The paper aims to discuss extensions of SPARQL that use regular expressions to navigate RDF graphs and may be used to answer queries considering RDFS semantics (in particular, nSPARQL and our proposal CPSPARQL). Design/methodology/approach – The paper is based upon a theoretical...
Purpose – University students use web‐based course registration systems to search, select, and register to courses. Despite having an important role at universities, course registration systems often pose usability problems to users. In this project, the authors assessed the usability of a...
Purpose – In this work, a new general framework is proposed to guide navigation over a collaborative concept network, in order to discover paths between concepts. Finding semantic chains between concepts over a semantic network is an issue of great interest for many applications, such as...
Purpose – This study's purposes were to longitudinally examine how interactivity factors as the antecedents to learner beliefs affected learners' intention to use the e‐learning system and explore whether the effects on learners' usage intention of the e‐learning system would change over time...
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