Results 211 to 220 of about 25,159 (260)
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Design of Storage Structure for Path-Based Query on RDF and RDF Schema
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2006In the Semantic Web, metadata and ontology for representing semantics and conceptual relationships of information resources are essential factors. RDF and RDF Schema are the W3C standard models for describing metadata and ontology. In this paper, we focus on a result of analyzing available query patterns considering both RDF and RDF Schema.
Youn Hee Kim +2 more
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Incremental Schema Discovery at Scale for RDF Data
2021The lack of a descriptive schema for an RDF dataset has motivated several research works addressing the problem of automatic schema discovery. The goal of these approaches is to generate a structural schema of a given RDF dataset from its instances. However, as new instances are added, the generated schema may become inconsistent with the dataset.
Redouane Bouhamoum +2 more
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An unsupervised instance matcher for schema-free RDF data
Journal of Web Semantics, 2015This article presents an unsupervised system that performs instance matching between entities in schema-free Resource Description Framework (RDF) files. Rather than relying on domain expertise or manually labeled samples, the system automatically generates its own heuristic training set.
Mayank Kejriwal, Daniel P. Miranker
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A Proposal for Management of RDF and RDF Schema Metadata in MOF
2003This paper proposes two MOF metamodels to support the representation and management of RDF and RDF Schema metadata. A metamodel is a set of related metadata used to build models. The MOF defines an abstract language and a framework to support the specification, implementation and ma-nagement of platform independent metamodels.
Décio Fonseca +2 more
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Schema Discovery in RDF Data Sources
2015The Web has become a huge information space consisting of interlinked datasets, enabling the design of new applications. The meaningful usage of these datasets is a challenge, as it requires some knowledge about their content such as their types and properties. In this paper, we present an automatic approach for schema discovery in RDF(S)/OWL datasets.
Kenza Kellou-Menouer, Zoubida Kedad
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Disjunctive Constraints in RDF and Their Application to Context Schemas
2014RDF 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 +2 more
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A Transformation from RDF Documents and Schemas to Relational Databases
2007 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, 2007At present, resource description framework (RDF) documents and schemas (RDFS) are used to describe information in the semantic Web. Many research works regard the RDF/RDFS documents as databases and proposed data manipulations for them. This research paper takes a different approach.
W. Teswanich, S. Chittayasothorn
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Investigating Schema Definitions Using RDFS and OWL 2 for RDF Databases in Life Sciences
2020With the development of measuring instruments, life science databases are becoming larger and more heterogeneous. As a step towards providing integrated databases, many life science databases have been published as Linked Open Data (LOD). To utilize such databases efficiently, it is desirable that the schema, such as class–class relations, can be ...
Atsuko Yamaguchi +3 more
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PoweRGen: A power-law based generator of RDFS schemas
Information Systems, 2012As the amount of RDF datasets available on the Web has grown significantly over the last years, scalability and performance of Semantic Web (SW) systems are gaining importance. Current RDF benchmarking efforts either consider schema-less RDF datasets or rely on fixed RDFS schemas.
George F. Georgakopoulos +2 more
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A Peer-to-Peer Information Sharing Method for RDF Triples Based on RDF Schema
2009Managing 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
Shojiro Nishio +3 more
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