Results 231 to 240 of about 3,785 (259)

Integrating Ontologies and Thesauri to Build RDF Schemas

1999
In this paper we present a new approach for building RDF schemas by integrating existing ontologies and structured vocabularies (thesauri). We will present a simple mechanism based on the specification of inclusion relationships between thesaurus terms and ontology concepts and show how these relationships can be exploited to create application ...
Amann, Bernd, Fundulaki, Irini
openaire   +2 more sources

Disjunctive Constraints in RDF and Their Application to Context Schemas

2014
RDF is a data model whose relevance is growing in the last years. Recently, some proposals have enriched the model with integrity constraints, well known within relational databases. In this work we extend an existing framework with two new types of integrity constraints of disjunctive nature, inspired by similar kinds of dependencies studied for the ...
RABOSIO, EMANUELE, Á. Cortés Calabuig, J. Paredaens   +2 more
openaire   +2 more sources

Defining RDF Vocabularies in RDF Schema

2021
Nadhif Ikbar Wibowo, Rakhmawati, Nur Aini   +1 more
openaire   +1 more source

Schema-Agnostic Ranking of RDF Properties.

2015
In many Semantic Web applications, having RDF predicates sorted by significance is of primarily importance to improve usability and performance. In this paper we focus on predicates available on DBpedia, the most important Semantic Web source of data counting 583 million English triples.
DESSI, ANDREA, ATZORI, MAURIZIO
openaire   +1 more source

A Peer-to-Peer Information Sharing Method for RDF Triples Based on RDF Schema

2009
Managing and sharing RDF triples in a distributed environment is one of the important issues for realizing semantic information retrieval in the Internet. Especially, the notion of RDF classes plays an important role in semantic information retrieval. In this paper, we propose a peer-to-peer information sharing method for RDF triples based on RDF class
Kohichi Kohigashi, Kentaro Takahashi, Kaname Harumoto, Shojiro Nishio   +3 more
openaire   +1 more source

Incremental Schema Generation for Large and Evolving RDF Sources

Lecture Notes in Computer Science, 2022
Zoubida Kedad, Stéphane Lopes, Kedad Zoubida   +2 more
exaly  

Persistence of Fuzzy RDF and Fuzzy RDF Schema

2022
Zongmin Ma, Guanfeng Li, Ruizhe Ma
openaire   +1 more source

Relational schema optimization for RDF-based knowledge graphs

Information Systems, 2022
George Papastefanatos, Panos Vassiliadis   +1 more
exaly  

RDF schema

2011
Dean Allemang, Jim Hendler
openaire   +1 more source

Keyword search over schema-less RDF datasets by SPARQL query compilation

Information Systems, 2021
Yenier Torres Izquierdo, Grettel M Garcia, Melissa Lemos   +2 more
exaly