Linked Data Rights vocabulary

Following the work done here, the new vocabulary Linked Data Rights has been published.
It supersedes the first attempt, done in August...

The schema is as follows:

Examples of use

To declare an ontology licensed as CC-BY

You don't need LDR.


An Observatory for the use of Licenses in Linked Data

Automatically discovering how Linked Data is being licensed is an idea key to determine how automatic tools should query for data licenses.
The key concepts are explained in these Ten nice slides


Vocabularies for licenses

This post describes existing vocabularies for expressing licenses.

1. License placeholders

License for a Linked Data dataset can be specified within the data, or outside of it, for example in a HTML document linking the data.
If the license is specified as RDF, Dublin Core license or other elements can be used, pointing to a well known license


Licensing example for an RDF mapping

This post is about RDF mappings and licensing, and proposes the following example for its discussion.


To void or not to void

The next figure shows the general concept of data vs metadata (data about the data).

Licensing a database is expressing some information (the license) about another information resource (the database).
In a W3C note, the "Vocabulary of Interlinked Datasets (VoID)" was described as a vocabulary for expressing metadata of RDF datasets.
This generates two alternative locations for declaring the license of a given dataset.


RDF Triples en español

Recojo las sugerencias de una conversación de ayer y listo las definiciones de la RAE

- Triple 2. adj. Dicho de una cosa: Que va acompañada de otras dos semejantes para servir a un mismo fin. Triple muralla.
Es sólo un adjetivo. Un "triple RDF" entonces sería un RDFRDFRDF o algo así.

- Triplo 1. adj. triple. U. t. c. s. m.
Sin comentarios.

- Tripleta 1. f. trío (– conjunto de tres personas, animales o cosas).
Es la traducción que más he oído


How O is the LOD cloud?

How Open is the Linked Open Data cloud?

Previous assessments

In 2009 Leigh Dodds prepared a beautiful LOD diagram showing the license of each member of the Linked Open Data Cloud, receiving good comments.


Loading large RDF in Virtuoso

This post describes how to load many nquads in Virtuoso.

Previous info

Why do you want this

Lets imagine you have many RDF triples (or nquads) and want to expose them in a server.

About nquads

RDF triples are very famous. I can easily state I am a person:

<> <> <>

RDF quads add context information, in a fourth component. This can be the name of the graph.


Additional material for an article

Additional material for an article

Before research objects come true, we must upload our additional material as a non-structured web resource. Here it is.

Semantic Characterization of Tweets Using Topic Models: A Use Case in the Entertainment Domain. Andrés García-Silva, Víctor Rodríguez-Doncel, Oscar Corcho (link)


First impressions on DCAT

DCAT, Data Catalog Vocabulary, is a W3C Working Draft, defined as an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web. We also read that:
By using DCAT to describe datasets in data catalogs, publishers increase discoverability and enable applications easily to consume metadata from multiple catalogs. It further enables decentralized publishing of catalogs and facilitates federated dataset search across sites.
Well, these are my impressions:



Subscribe to RSS