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Networked graphs: a declarative mechanism for SPARQL rules, SPARQL views and RDF data integration on the web
TLDR
Networked Graphs is proposed, which allow users to define RDF graphs both, by extensionally listing content, but also by using views on other graphs, which can be used to include parts of other graph, to transform data before including it and to denote rules. Expand
TagFS - Tag Semantics for Hierarchical File Systems
TLDR
This paper analyzes the different semantics between strictly hierarchical and tagging-based organisation and maps non-hierarchical tagging and query semantics to the commonly used hierarchical file system semantics, thus combining the benefits of both worlds. Expand
SemaPlorer - Interactive semantic exploration of data and media based on a federated cloud infrastructure
TLDR
A formative evaluation of the SemaPlorer application is conducted, realized a large, federated data infrastructure for semantically heterogeneous data sources from within and outside of the cloud, and flexible enough to leverage for exploration of almost arbitrary additional data sources that might be added in the future. Expand
Multimedia Semantics: Metadata, Analysis and Interaction
TLDR
This book explains, collects and reports on the latest research results that aim at narrowing the so-called multimedia "Semantic Gap", the large disparity between descriptions of multimedia content that can be computed automatically, and the richness and subjectivity of semantics in user queries and human interpretations of audiovisual media. Expand
A SPARQL Semantics Based on Datalog
TLDR
This paper proposes a formal semantics for SPARQL based on datalog and proposes two useful extensions to SParQL, namely binding of variables to results of filter expressions and views on RDF graphs as datasets for queries. Expand
Model Driven Specification of Ontology Translations
TLDR
A metamodel-based representation of ontology alignments that integrate semantic translations using description logics and lower level translation specifications into one model of representation for ontologyalignments is proposed. Expand
Optimizing SPARQL Queries over Disparate RDF Data Sources through Distributed Semi-Joins
TLDR
This work aims at providing a way of asking SPARQL queries that make use of data residing in disparate data sources served by multiple SParQL endpoints, enabling an integrated way of querying the whole Semantic Web at a time. Expand
OWL SAIQL - An OWL DL Query Language for Ontology Extraction
TLDR
SAIQL, the novel Schema And Instance Query Language for OWL DL, that is well suited for ontology extraction is presented and its syntax is described and a basic evaluation strategy is explained. Expand
Networked RDF graphs
TLDR
This paper defines networked graphs as a small syntactic extension of named graphs in RDF that allows for the definition of a graph by explicitly listing triples as well as by SPARQL queries on one or multiple other graphs. Expand
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