Querying and Updating RDF / S Named Graphs Master ’ s Thesis
نویسندگان
چکیده
The Semantic Web is emerging to add structure and meaning to conventional Web content [3]. Many scientific groups benefit from data models of increasing complexity to
منابع مشابه
On Explicit Provenance Management in RDF/S Graphs
The notion of RDF Named Graphs has been proposed in order to assign provenance information to data described using RDF triples. In this paper, we argue that named graphs alone cannot capture provenance information in the presence of RDFS reasoning and updates. In order to address this problem, we introduce the notion of RDF/S Graphsets: a graphset is associated with a set of RDF named graphs an...
متن کاملDynamic Querying of Mass-Storage RDF Data with Rule-Based Entailment Regimes
RDF Schema (RDFS) as a lightweight ontology language is gaining popularity and, consequently, tools for scalable RDFS inference and querying are needed. SPARQL has become recently a W3C standard for querying RDF data, but it mostly provides means for querying simple RDF graphs only, whereas querying with respect to RDFS or other entailment regimes is left outside the current specification. In t...
متن کاملAtlas: Storing, updating and querying RDF(S) data on top of DHTs
The RDF(S) data model has been proposed for encoding metadata about Web resources. As more and more Web resources are annotated using RDF(S), there is an urgent need for efficiently managing this large volume of data. In this paper, we present Atlas, a peer-to-peer system for storing, updating and querying RDF(S) data. The Atlas system has been built using the distributed hash table Bamboo. Atl...
متن کاملRDF Querying in Xcerpt
A versatile query language provides capabilities of querying ordinary XML based data as well as Semantic Web data and thus builds a bridge between both worlds. Xcerpt, a pattern-based deductive query and transformation language for semi-structured data, shows to be a perfectly appropriate candidate to become such a versatile query language. This thesis investigates and develops new language con...
متن کاملLogical Foundations of (e)RDF(S): Complexity and Reasoning
An important open question in the semantic Web is the precise relationship between the RDF(S) semantics and the semantics of standard knowledge representation formalisms such as logic programming and description logics. In this paper we address this issue by considering embeddings of RDF and RDFS in logic. Using these embeddings, combined with existing results about various fragments of logic, ...
متن کامل