Abstract
Abstract. Modern software tools for managing Linked Data are often designed for skilled users. Therefore, they cannot be used for education purposes because they require substantial a priori knowledge about the Resource Description Framework and the SPARQL query language. LinkDaLe is a single page application designed to teach students the concept of Linked Data and work with linked data at the same time. In the paper we showcase the interface and functionality of LinkDaLe by triplifying data on Geo4All member organizations. The application was built and evaluated within The Business Process Integration Lab, a master programme course in 2016 and 2017 years. Positive feedback from both students and teachers proved the relevance of the proposed design consideration. LinkDaLe showed usability working with domain specific data e.g. geospatial and logistic data.
Highlights
Linked Data(LD) has a steep learning curve
Available tools are built with a skilled user in mind, not a novice
With LinkDaLe it was possible to set up SPARQL queries to evaluate quality of student works
Summary
Linked Data(LD) has a steep learning curve. To understand the mere LD design rules formulated by Berners-Lee (Berners-Lee, 2006), a student must know the Hypertext Transfer Protocol (HTTP), the Resource Description Framework (RDF) and SPARQL, a query language of the Semantic Web. On the other hand, despite of a great number of tools developed for LD so far, they are not meant for lay users or beginners. Available tools are built with a skilled user in mind, not a novice. Those two factors create a chicken and egg problem – learning LD requires tools, and tools require understanding of LD. In the case of Geospatial Linked Data, the picture is even more complicated by introducing concepts from the GIS world like coordinates, projections and geometries
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