1. Download all metadata about datasets already stored in http://datahub.io/.
Use this script
https://github.com/lod-cloud/datahub2void
to get a void.ttl file
2. Load void.ttl into your RDF storage server (I use Sesame)
3. Make this query
<code>
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
PREFIX foaf:<http://xmlns.com/foaf/0.1/>
PREFIX tag:<http://www.holygoat.co.uk/owl/redwood/0.1/tags/>
PREFIX owl:<http://www.w3.org/2002/07/owl#>
PREFIX xsd:<http://www.w3.org/2001/XMLSchema#>
PREFIX void:<http://rdfs.org/ns/void#>
PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX skos:<http://www.w3.org/2004/02/skos/core#>
PREFIX dcterms:<http://purl.org/dc/terms/>
select * {
?s a void:Linkset.
?s void:linkPredicate skos:exactMatch.
?s void:objectsTarget ?otarget.
?s void:subjectsTarget ?starget.
?s void:triples ?triples.
}
</code>
4. Export results of this query as N-triples
5. Download https://github.com/lmatteis/void-graph
6. Open file index.html in your browser. Inside text area field, paste
all n-triples you have already exported.
7. That is all. You must have your own LOD - Cloud :)