RDF

Once upon a time, D7 was a promising platform for linked data. Looking at D8, it would seem that most of the functionality hasn't made it to D8 and the D7 semantic web modules weren't ported to D8.

What is currently usable in D8?

I can see https://www.drupal.org/docs/7/api/rdf-mapping-api and a few projects by Martin Schauer (PoolParty) https://www.drupal.org/u/martin-schauer. Other than that?

I've been experimenting with the sparql_views module to pull RDF and I've somehow managed to mess up the namespaces, resulting in RDF namespace conflicts. How can I delete the incorrect mappings from the RDF publishing settings page?

I've stumbled across some older, but still very interesting articles by Kurt Cagle regarding combining Drupal and XML technologies:

• Drupal as Open Architecture
• XProc: Drupal, XML Pipelines and RESTful Services
• http://news.oreilly.com/kurt-cagle/
• http://www.xmltoday.org
• http://semanticmodeling.blogspot.com

Hello everyone,

This is to announce the first release of my Google Summer of Code 2014 Project. You can download the module from https://www.drupal.org/project/rdfui
A screencast, covering all the features of the modules, is also available.

Instead of appending the URLs with .nt or .rdf as in /node/66.nt, I want to provide an explicit link or button so that users can select the export format and click it. Is there any easy way, preferably through UI to do this? This should be associated with all the items of a specific content type.

Apart from nt and rdf/xml formats, how can I enable other formats? I installed RESTful Web Services but couldn't figure out where/how to enable the other formats.

Thanks in advance.

Hi,

I am creating an academic website with RDF mappings for the content. I am using Drupal 7, RDF 7.x-2.0-alpha4 and Biblio 7.x-1.0-rc5. I have couple of questions.

1) In the RDF UI Mappings for the content types from biblio module, there is no facility to map the fields already present in the content type. RDF Mappings only show up for the newly created fields. Is there a way to do this for existing fields of biblio content types?

Buenas tardes amigos...

Estaba usando el módulo RDF que viene por defecto con Drupal, pero al hacer el test de Rich Media vía http://www.google.com/webmasters/tools/richsnippets encuentro demasiados códigos raros como prefLabel (child), Concept, etc, (adjunto captura).

Indagando observé que proviene del campo de tags que es afectado por defecto por el código RDF, cuando desactivo el módulo RDF se borran esos códigos molestos en el test de Rich Media.

Pensaba yo que era la plantilla, pero usé incluso la plantilla por defecto de Drupal y sigo recibiendo el mismo código raro.

RDF support in Drupal has been implemented with this model in mind:
Node = RDF subject
Field = RDF predicate
Field value = RDF object
This is a wonderful solution for most of Drupal content where the content type is ontologically connected to the field by a predicate.

RDFx allows for fields to be expressed as RDFa. Sometimes RDF concepts exist in other locations, for example DBpedia, and not as part of the local taxonomies. What is the recommended way to link to these external resources? These resources do have persistent URIs, so I guess the simplest thing to do is to make the field into a link. But ideally one would prefer to get a good label to show on the HTML output rather than the link itself. RDF Proxy (http://drupal.org/project/rdfproxy) seems to be doing that but the project appears to be abandoned. Any ideas?

Dear all,