Results 221 to 230 of about 3,785 (259)
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The path index for query processing on RDF and RDF schema
The 7th International Conference on Advanced Communication Technology, 2005, ICACT 2005., 2005In the semantic Web, metadata and ontology plays important roles for advanced information retrieval systems. A large amount of RDF documents for describing metadata and RDF Schema documents for representing ontology is made available. Therefore, many studies to store and query metadata and ontology in RDF and RDF Schema are required.
Hae Chull Lim +3 more
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An unsupervised instance matcher for schema-free RDF data
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
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Transforming Valid XML Documents into RDF via RDF Schema
Third International Conference on Next Generation Web Services Practices (NWeSP'07), 2007Young-Koo Lee, Byeong-Soo Jeong
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Scalable Schema Discovery for RDF Data
2020The semantic web provides access to an increasing number of linked datasets expressed in RDF. One feature of these datasets is that they are not constrained by a schema. Such schema could be very useful as it helps users understand the structure of the entities and can ease the exploitation of the dataset.
Redouane Bouhamoum +2 more
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Revealing the Conceptual Schemas of RDF Datasets
2019RDF-based datasets, thanks to their semantic richness, variety and fine granularity, are increasingly used by both researchers and business communities. However, these datasets suffer a lack of completeness as the content evolves continuously and data contributors are loosely constrained by the vocabularies and schemes related to the data sources ...
Issa, Subhi +3 more
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2020
This chapter presents an in-depth primer for the RDF Schema (RDFS 1.1) standard, which is primarily used to define a lightweight semantics for the classes and properties used in RDF graphs. After an initial motivation and overview, we discuss the RDFS vocabulary, and how it can be used to define sub-classes, sub-properties, domain and ranges, amongst ...
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This chapter presents an in-depth primer for the RDF Schema (RDFS 1.1) standard, which is primarily used to define a lightweight semantics for the classes and properties used in RDF graphs. After an initial motivation and overview, we discuss the RDFS vocabulary, and how it can be used to define sub-classes, sub-properties, domain and ranges, amongst ...
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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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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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RDF-Based Schema Mediation for Database Grid
Fifth IEEE/ACM International Workshop on Grid Computing, 2005In presence of Grid where a huge amount of databases can be involved in sharing cycle, database tools and middlewares should be well suited for schema mediation and query processing in a semantically meaningful way. Dart is an implemented prototype system whose goal is to provide a semantic solution for database resource sharing capable of deployment ...
Huajun Chen +3 more
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