Results 11 to 20 of about 3,785 (259)
Building RDF-Schema Based Knowledge Map for Knowledge Management Systems [PDF]
Journal of Systemics, Cybernetics and Informatics, 2003 This paper attempts to implement the semantic web paradigm, which enables the semantic search of knowledge and information on the web environment, by adopting RDF, RDF-schema and Dublin core data element structure in the process of building knowledge map.
Doug W. Choi, Hyun Gyu Lee
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Sesame: A Generic Architecture for Storing and Querying RDF and RDF Schema [PDF]
, 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
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Deriving an Emergent Relational Schema from RDF Data [PDF]
Proceedings of the 24th International Conference on World Wide Web, 2015 We motivate and describe techniques that allow to detect an "emergent" relational schema from RDF data. We show that on a wide variety of datasets, the found structure explains well over 90% of the RDF triples. Further, we also describe technical solutions to the semantic challenge to give short names that humans find logical to these emergent tables ...
M.-D. Pham (Minh-Duc) +3 more
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MonetDB/RDF: Discovering and Exploiting the Emergent Schema of RDF Data.
ERCIM News, 2014 The Resource Description Framework (RDF) has been used as the main data model for the semantic web and Linked Open Data, providing great flexibility for users to represent and evolve data without need for a prior schema. This flexibility, however, poses challenges in implementing efficient RDF stores.
M.-D. Pham (Minh-Duc) +1 more
openaire +4 more sources
Model Theory and Entailment Rules for RDF Containers, Collections and Reification [PDF]
, 2009 An RDF graph is, at its core, just a set of statements consisting of subjects, predicates and objects. Nevertheless, since its inception practitioners have asked for richer data structures such as containers (for open lists, sets and bags), collections
Furche, Tim +2 more
core +1 more source
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.
Staworko, Slawomir, Wieczorek, Piotr
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Using XML to encode TMA DES metadata
Journal of Pathology Informatics, 2011 Background: The Tissue Microarray Data Exchange Specification (TMA DES) is an XML specification for encoding TMA experiment data. While TMA DES data is encoded in XML, the files that describe its syntax, structure, and semantics are not.
Oliver Lyttleton +3 more
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Operational semantics for SPARQL Update [PDF]
, 2011 Concurrent fine grained updates are essential for using RDF stores in dynamic modern Web applications, where users increasingly contribute content as often as they read content. SPARQL Update is a language proposed by the W3C for fine grained updates for
HORNE, Ross James +6 more
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Open Technologies Supporting Linked Open Data Publishing: Croatian Population Census Case Study [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesPopulation census data in Croatia is provided in spreadsheet and without explicit geometric representation of its spatial units which makes it not directly usable in spatial analyses and data-based decision-making.
K. Kević, A. Kuveždić Divjak
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Mapping Object-Oriented Database Models Into RDF(S)
IEEE Access, 2018 Resource description framework RDF and RDF schema (collectively called RDF(S)) are the normative languages to describe the Web resource information. How to construct RDF(S) from the existing data sources is becoming an important research issue.
Qiang Tong
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