Add to ORKGAbstract. This paper presents a formal semantics of SPARQL based on [1]. Extensions to [1] are discussed, including support for blank nodes in graph patterns, and bag/multisets semantics for solutions. The motivation for this paper is to make the definitions of [1] closer to the last official SPARQL release (4th October 2006), and to serve as feedback to the RDF Data Access Working Group
SPARQL has become the most popular language for querying RDF datasets, the standard data model for r...
Abstract. Updates in RDF stores have recently been standardised in the SPARQL 1.1 Update specificati...
Abstract. Updates in RDF stores have recently been standardised in the SPARQL 1.1 Update specificati...
We consider the recommendations of the World Wide Web Consortium (W3C) about the Resource Descriptio...
Abstract. We extend the Semantic Web query language SPARQL by defining the semantics of SPARQL queri...
We extend the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under t...
Abstract. The goal of this paper is to give an overview of the basics of the theory of RDF databases...
Abstract. As the data and ontology layers of the Semantic Web stack have achieved a certain level of...
SPARQL has become the gold-standard for RDF query languages. Nevertheless, we believe there is furth...
The Semantic Web is the initiative of the W3C to make infor-mation on the Web readable not only by h...
“The Semantic Web is an extension of the current web in which information is given well-defined mean...
Abstract. Lightweight ontologies in the form of RDF vocabularies such as SIOC, FOAF, vCard, etc. are...
Semantic web document representation is formulated using RDF/OWL. RDF representation is in the form ...
SPARQL queries can be represented in RDF in order to work with them as first-class citizen in Semant...
Abstract. RDF Schema (RDFS) extends RDF with a schema vocabu-lary with a predefined semantics. Evalu...
SPARQL has become the most popular language for querying RDF datasets, the standard data model for r...
Abstract. Updates in RDF stores have recently been standardised in the SPARQL 1.1 Update specificati...
Abstract. Updates in RDF stores have recently been standardised in the SPARQL 1.1 Update specificati...
We consider the recommendations of the World Wide Web Consortium (W3C) about the Resource Descriptio...
Abstract. We extend the Semantic Web query language SPARQL by defining the semantics of SPARQL queri...
We extend the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under t...
Abstract. The goal of this paper is to give an overview of the basics of the theory of RDF databases...
Abstract. As the data and ontology layers of the Semantic Web stack have achieved a certain level of...
SPARQL has become the gold-standard for RDF query languages. Nevertheless, we believe there is furth...
The Semantic Web is the initiative of the W3C to make infor-mation on the Web readable not only by h...
“The Semantic Web is an extension of the current web in which information is given well-defined mean...
Abstract. Lightweight ontologies in the form of RDF vocabularies such as SIOC, FOAF, vCard, etc. are...
Semantic web document representation is formulated using RDF/OWL. RDF representation is in the form ...
SPARQL queries can be represented in RDF in order to work with them as first-class citizen in Semant...
Abstract. RDF Schema (RDFS) extends RDF with a schema vocabu-lary with a predefined semantics. Evalu...
SPARQL has become the most popular language for querying RDF datasets, the standard data model for r...
Abstract. Updates in RDF stores have recently been standardised in the SPARQL 1.1 Update specificati...
Abstract. Updates in RDF stores have recently been standardised in the SPARQL 1.1 Update specificati...