CLARA Knowledge Graph of licensed educational resources (Singleton properties)

<p><span>/!\</span>&nbsp;This deposit is deprecated; a more complete version of the deposit can be found here: <a href="https://zenodo.org/records/8403142">8403142</a>. <span>/!\</span></p> <p><strong>CLARA</strong><br>This deposit is part of the <a href="https://project.inria.fr/clara/">CLARA project</a>. The CLARA project aims to empower teachers in the task of creating new educational resources. And in particular with the task of handling the licenses of reused educational resources.</p> <p>The present deposit contains&nbsp;the RDF files created using an&nbsp;RDF mapping (<a href="https://rml.io/">RML</a>)&nbsp;and a mapper&nbsp;(<a href="https://github.com/morph-kgc/morph-kgc">Morph-KGC</a>).&nbsp;The files used as inputs can be found <a href="http://10.5281/zenodo.8107150">here</a>. That pipeline can be found on <a href="https://gitlab.univ-nantes.fr/clara/pipeline">Gitlab</a>. The data used in that pipeline originate from <a href="https://www.x5gon.org/">X5GON</a>, a European project aiming to generate and gather open educational resources.</p> <p><strong>Content</strong><br>The present Knowledge Graph contains information about 45K educational resources and 135K subjects (extracted from DBpedia).<br>That&nbsp;information contains&nbsp;</p> <ul> <li>the author,</li> <li>its title and description</li> <li>the license,</li> <li>a URL to the resource itself,</li> <li>the language of the educational resource,</li> <li>its mimetype,</li> <li>and finally which subject it talks about, and to what extent.</li> </ul> <p><br>That extent is given by two scores, a PageRank score and a cosinus score (that were&nbsp;<strong>not</strong>&nbsp;calculated on our graph but during the X5GON project)</p> <p>A particularity of the Knowledge Graph is its heavy use of RDF reification, across large multi-valued properties.<br>Other versions of the same deposit can be found using different reification models:</p> <ul> <li><a href="https://zenodo.org/record/8108856">Standard reification</a></li> <li><a href="https://zenodo.org/record/8108948">Named graphs</a></li> <li><a href="https://zenodo.org/record/8108971">RDF-star</a></li> </ul> <p>The Knowledge Graph also contains <a href="https://databus.dbpedia.org/dbpedia/generic/categories">categories</a> originating from DBpedia. They help precise the subjects that are also extracted from DBpedia.</p> <p>The deposit contains five types of files:</p> <ul> <li><strong>Authors_[</strong>X<strong>].nt</strong>&nbsp;- Those&nbsp;contain&nbsp;the authors'&nbsp;nodes, their type, and name.</li> <li><strong>ER_[</strong>X<strong>].nt</strong>&nbsp;- Those&nbsp;contain&nbsp;the educational resources and their information using singleton properties.</li> <li><strong>categories_skos_[</strong>X<strong>].ttl</strong>&nbsp;- Those contain the hierarchy of DBpedia categories.</li> <li><strong>categories_labels.ttl&nbsp; </strong>- This file&nbsp;contains additional information about the categories.</li> <li><strong>categories_article.ttl</strong> - This file contains the RDF&nbsp;triples that link the DBpedia subjects to the DBpedia categories.</li> </ul>