Semantic Web

This group should probably have more organizers. See documentation on this recommendation.

Welcome to the Semantic Web group in Drupal. This group was started at DrupalCon Barcelona 2007 and includes discussions on how to integrate the Semantic Web technologies into Drupal and list the various effort of the community towards enabling RDF in Drupal. Drupal 7 comes with native RDFa support in core. If you want extra RDF capabilities such as other serialization formats and SPARQL support, checkout the RDF Extensions, SPARQL and SPARQL Views contributed projects. If you need support or have found a bug in one of the fore mentioned projects, please file a ticket in their issue tracker (block on the right on each project page).

tr3v0's picture

How does one change the RDF namespaces from the publishing settings page?

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?

ashepherd's picture

BoF - RDF in Drupal: Making your data interoperable

2015-05-13 17:00 - 18:00 America/Los_Angeles
Event type: 

If you are you heading to DrupalCon LA, consider the RDF BoF on Wednesday at 5pm Pacific.

Agenda being formed in a Google Doc. Give me a shout if you'd like to add anything to it:

See you there!

natuk's picture

Current best practice

Hello, is there a document which summarises current best practices for the use of the various RDF extensions? Is a Drupal-based SPARQL endpoint feasible and practical at the moment? Some of the extensions seem less busy in terms of development.

chocolatehuanghai's picture

sparql views

hi!everyone!i have encountered a mistake when i use sparql views rescource type,when i add a sparql views resource type,i will appear"PDOException: SQLSTATE[42S22]: Column not found: 1054 Champ 'endpoint_uri' inconnu dans field list: SELECT endpoint_uri FROM {sparql_views_resource_type_endpoint} WHERE svid = :svid; Array ( [:svid] => ) in sparql_views_resource_type_form() (line 54 of D:\wamp\www\drupal-\sites\all\modules\sparql_views\"I know it is about mysql ,but i don's know how to solve it. And my mysql version is 5.6,PHP is 5.5.
Thank you!

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chocolatehuanghai's picture

How to use rdf mappings and sparql endpoint

HI!I am new to drupal,i have installed rdfx and sparl related modules,but i don't know how to use it,i see someone use it to publish linked data,and they also gave the principle of using them,but i still don't know how can the drupal map the resources into rdf form and how it can link the external data?Can you guys help me?Thank you!!

thurnert's picture

Automatic Semantic Tagging Module launched

REEEP and CTCN have recently launched Climate Tagger, a new tool to automatically scan, label, sort and catalogue datasets and document collections. Climate Tagger now incorporates a Drupal Module for automatic annotation of Drupal content nodes. Climate Tagger addresses knowledge-driven organizations in the climate and development arenas, providing automated functionality to streamline, catalogue and link their Climate Compatible Development data and information resources.

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scor's picture

RDF improvements in Drupal 7.33: better support and performance

While a large part of the Drupal community is focusing on and getting excited about Drupal 8, it doesn't mean that Drupal 7 isn't getting any love! The latest version Drupal 7.33 includes several improvements for the RDF module which I thought this group would be interested to hear about.

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kalte2707's picture

SemWeb session at DrupalCon 2014 in Amsterdam?

Dear all
I wonder if there will be a session on semantic web issues at DrupalCon2014 in Amsterdam starting in about 1 week - I would be very interested and curious to learn about current projects going on, about what is planned / in implementation for Drupal8 and also provide insights about our own Drupal work at Semantic Web Company by making use / integrating PoolParty Semantic Suite..... What do people think? Best - see you in Amsterdam - Martin

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Sachini's picture

GSoC Project : Drupal 8 Mapping Tool

Hello everyone,

This is to announce the first release of my Google Summer of Code 2014 Project. You can download the module from
A screencast, covering all the features of the modules, is also available.

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jcalais's picture

D7 module for linking term reference fields to external providers such as Freebase, Dbpedia.

Hi everyone.

I just joined this group and wanted to let you know about an effort of ours to create a module to fetch taxonomy terms from external sources. This would mean no more free hand tags and instead the autocomplete field keyword searches a bunch of providers through their open apis.

The providers are modular in nature, so anyone can make a new provider for the base module, which is called Yild (Yild - integrator for Linked Data).

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John_B's picture

Coursera metadata course

Just to draw attention to the Metadata course on Coursera. At time of writing the second weekly unit, on Dublin Core, has just been published. I have no link with Coursera or Dr Pomerantz, I am just taking the course!

mvrweb's picture

Export data in RDF

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.

scor's picture

Linked Data and RDF events at DrupalCon Austin

Are you attending DrupalCon Austin and looking to learn more about Linked Data and Drupal? Here are a few events you shouldn't miss...

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Sachini's picture

GSoC Project : Mapping Tool

I’m Sachini Herath, following my bachelors degree in Computer Science and Engineering at University of Moratuwa, Sri Lanka. Currently pursuing my third year of study, I have worked on some projects using PHP and Symphony framework (You can find the source codes in github). I’m delighted to contribute to Drupal as my Google Summer of Code project this year.

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natuk's picture

Getty AAT goes LOD

A couple of weeks ago, a much anticipated launch finally took place: The Getty Arts and Architecture Thesaurus is now available as Linked Open Data to the joy of much of the cultural heritage community. This was a major step for the Getty Vocabularies programme which so far allowed access to its data through its website or through a paid subscription API.

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scor's picture

RDF code sprint next Tue before the Boston meetup

2014-03-04 16:00 - 18:30 America/New_York
Event type: 

This is a cross Boston + Semantic Web groups event to announce a small code sprint on Tuesday right before the Boston Drupal meetup. We will sit on the lower ground of the main entrance of the Building E51 - Tang Center. I'll be there at 4pm. Remotes are welcome to join as well, ping scor on IRC #drupal-rdf and we will coordinate from there.

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mvrweb's picture

RDF mapping to multi-valued fields and biblio fields


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?

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scor's picture

RDF code sprint this Saturday during the Drupal Global Sprint Weekend

As part of the Drupal Global Sprint Weekend in Boston, we will host an RDF code sprint this Saturday. Anyone can join us in Boston at the Genuine Interactive office, and remote sprinters are also welcome to join on IRC and Google Hangout. Just find me (scor) on IRC in #drupal or #drupal-rdf in order to get you started.

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tkoleary's picture

Trying out a new tool for surfacing good ideas

It's been a pet peeve of mine for a long time that, while D.O and G.D.O have a lot of great ways to add ideas and discuss them there's really no efficient way of collectively prioritizing the ones we should focus our efforts on.

I have spent a lot of time trying out different tools that do this, as well as trying to design and build them. We may at some point reach a home-grown solution, but in the meantime I have found a very simple and effective tool that I'm trying out. It's called Tricider. I've posted an initial question here:

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jneubert's picture

Drupal 7 LOD appliance for educational purposes

For the "Linked Data Publication with Drupal" workshop (slides) at SWIB13 I've created an appliance for Virtual Box, VMware etc., based on TurnKey Linux. Perhaps it is useful to others with similar plans - see

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