Getty Vocabularies. Visual Data Web - Visually Experiencing the Data Web. Visual Data Web - Visually Experiencing the Data Web. LODStats - 9960 datasets. SemWebCentral. SemWebCentral.
Turtle. Data Persée – Persée en métadonnées. Search RDF data with SPARQL. SPARQL and the Jena Toolkit open up the semantic Web Philip McCarthyPublished on May 10, 2005 The Resource Description Framework, or RDF, enables data to be decentralized and distributed.
RDF models can be merged together easily, and serialized RDF can be simply exchanged over HTTP. Applications can be loosely coupled to multiple RDF data sources over the Web. At PlanetRDF.com, for example, we syndicate weblogs from authors who provide their content as RDF in a RSS 1.0 feed. But how can you find and manipulate the data you need within RDF graphs? This article assumes that you have a working knowledge of RDF, and are familiar with RDF vocabularies such as Dublin Core, FOAF, and RSS 1.0. Anatomy of a simple SPARQL query Let's start by looking at PlanetRDF's bloggers.rdf model. Figure 1. View image at full size Now let's look at a very simple SPARQL query over the bloggers model. Listing 1. The query attempts to match the triples of the graph pattern to the model. Using SPARQL with Jena. Le tutoriel SPARQL. This SPARQL tutorial aims to give a quick course in SPARQL.
The tutorial covers the major features of the query through examples language, but is not intended to be complete. If you are looking for a short introduction to SPARQL and Jena, try RDF with SPARQL database search. SPARQL is a query language and Protocol to access the RDF developed by the W3C RDF Data Access Working Group. As a query language, SPARQL is "oriented data ' in this sense only examine information held in templates; There is no inference in query language itself.
Of course, the Jena model can be "smart" in the sense that it provides the impression that some triplets exist in creating demand, including the OWL reasoning. Comment.
Schema.org. RDFa. Microdata. Microformats. Bibliotecas y web semántica. Info.ch - Tim Berners-Lee's proposal. W3C. ENTERPRISE. TOOLS web semántica. FOAF. Iniciación a la web Semántica. Web semántica. El precursor de la idea, Tim Berners-Lee, intentó desde el principio incluir información semántica en su creación, la World Wide Web, pero por diferentes causas no fue posible.[2] Por ese motivo introdujo el concepto de semántica con la intención de recuperar dicha omisión.
Relación con Internet[editar] La web semántica es una ampliación de la Web, por medio de la que se intenta realizar un filtrado de manera automática pero precisa de la información. Es necesario hacer que la información que anida en la web sea entendible por las propias máquinas. En concreto se atiende a su contenido, independientemente de la estructura sintáctica. O lo que es lo mismo, se atiende a diferentes ámbitos, se tiene en cuenta el conjunto de lenguajes, a la vez que los procedimientos para poder añadir esa semántica a la información para que, de esta manera, sea entendible por los agentes encargados de procesarla.
LINKED DATA. SPARQL. RDF. Ontology - OWL. C Semantic Web Activity Homepage. The Semantic Web is a web of data.
There is lots of data we all use every day, and it is not part of the web. I can see my bank statements on the web, and my photographs, and I can see my appointments in a calendar. But can I see my photos in a calendar to see what I was doing when I took them? Can I see bank statement lines in a calendar? Why not? The Semantic Web is about two things. See also the activity news for an account of recent events, publications, etc. The following groups are part of the Semantic Web Activity. Active Groups Semantic Web Coordination Group The Semantic Web Coordination Group is tasked to provide a forum for managing the interrelationships and interdependencies among groups focusing on standards and technologies that relate to this goals of the Semantic Web Activity. RDFa Working Group RDF Working Group The mission of the RDF Working Group, is to update the 2004 version of the Resource Description Framework (RDF) Recommendation.