Results 1 to 10 of about 174,735 (242)
Enabling knowledge representation on the Web by extending RDF schema [PDF]
Computer Networks, 2001 Recently, a widespread interest has emerged in using ontologies on the Web. Resource Description Framework Schema (RDFS) is a basic tool that enables users to define vocabulary, structure and constraints for expressing meta data about Web resources. However, it includes no provisions for formal semantics, and its expressivity is not sufficient for full-
Jeen Broekstra +5 more
semanticscholar +7 more sources
A descriptive type foundation for RDF Schema [PDF]
Journal of Logical and Algebraic Methods in Programming, 2016 Abstract This paper provides a type theoretic foundation for descriptive types that appear in Linked Data. Linked Data is data published on the Web according to principles and standards supported by the W3C. Such Linked Data is inherently messy: this is due to the fact that instead of being assigned a strict a priori schema, the schema is inferred a ...
Gabriel Ciobanu +2 more
semanticscholar +8 more sources
Sesame: A Generic Architecture for Storing and Querying RDF and RDF Schema [PDF]
International Workshop on the Semantic Web, 2002 RDF and RDF Schema are two W3C standards aimed at enriching the Web with machine-processable semantic data. We have developed Sesame, an architecture for efficient storage and expressive querying of large quantities of metadata in RDF and RDF Schema. Sesame's design and implementation are independent from any specific storage device.
Jeen Broekstra +2 more
semanticscholar +5 more sources
Integrating ontologies and thesauri for RDF schema creation and metadata querying [PDF]
International Journal on Digital Libraries, 2000 In this paper we present a new approach for building metadata schemas by integrating existing ontologies and structured vocabularies (thesauri). This integration is based on the specification of inclusion relationships between thesaurus terms and ontology concepts and results in application-specific metadata schemas incorporating the structural views ...
Bernd Amann +2 more
semanticscholar +6 more sources
On Ranking RDF Schema Elements (and its Application in Visualization) [PDF]
Journal of universal computer science (Online), 2007 JUCS - Journal of Universal Computer Science Volume Nr.
Yannis Tzitzikas +2 more
semanticscholar +4 more sources
Resource Description Language RDF & RDF Schema
, 2016 Umberto Straccia
semanticscholar +4 more sources
The SPHN Schema Forge – transform healthcare semantics from human-readable to machine-readable by leveraging semantic web technologies [PDF]
Journal of Biomedical SemanticsBackground The Swiss Personalized Health Network (SPHN) adopted the Resource Description Framework (RDF), a core component of the Semantic Web technology stack, for the formal encoding and exchange of healthcare data in a medical knowledge graph.
Vasundra Touré +7 more
doaj +2 more sources
Benchmarking RDF Schemas for the Semantic Web [PDF]
, 2002 Describing web resources using formal knowledge (i.e., creating metadata according to a formal representation of a domain of discourse) is the essence of the next evolution step of the Web, termed the Semantic Web. The W3C's RDF/S (Resource Description Framework/Schema Language) enables the creation and exchange of resource metadata as normal web data.
Aimilia Magkanaraki +3 more
openalex +4 more sources
Semantics and Validation of Shapes Schemas for RDF [PDF]
, 2014 We present a formal semantics and proof of soundness for shapes schemas, an expressive schema language for RDF graphs that is the foundation of Shape Expressions Language 2.0. It can be used to describe the vocabulary and the structure of an RDF graph, and to constrain the admissible properties and values for nodes in that graph. The language defines a
Iovka Boneva +2 more
openalex +6 more sources
Containment of Shape Expression Schemas for RDF [PDF]
Proceedings of the 38th ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems, 2019 We study the problem of containment for shape expression schemas (ShEx) for RDF graphs. We identify a subclass of ShEx that has a natural graphical representation in the form of shape graphs and their semantics is captured with a tractable notion of embedding of an RDF graph in a shape graph.
Sławek Staworko, Piotr Wieczorek
openalex +6 more sources