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Janos Haits

RDF 1.1 Concepts and Abstract Syntax - 0 views

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    "The Resource Description Framework (RDF) is a framework for representing information in the Web. This document defines an abstract syntax (a data model) which serves to link all RDF-based languages and specifications. The abstract syntax has two key data structures: RDF graphs are sets of subject-predicate-object triples, where the elements may be IRIs, blank nodes, or datatyped literals. They are used to express descriptions of resources. RDF datasets are used to organize collections of RDF graphs, and comprise a default graph and zero or more named graphs. RDF 1.1 Concepts and Abstract Syntax also introduces key concepts and terminology, and discusses datatyping and the handling of fragment identifiers in IRIs within RDF graphs."
Janos Haits

RDF Primer - 1 views

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    Resource Description Framework (RDF) is a language for representing information about resources in the World Wide Web. This Primer is designed to provide the reader with the basic knowledge required to effectively use RDF. It introduces the basic concepts of RDF and describes its XML syntax. It describes how to define RDF vocabularies using the RDF Vocabulary Description Language, and gives an overview of some deployed RDF applications. It also describes the content and purpose of other RDF specification documents.
Janos Haits

RDF Interfaces 1.0 - 0 views

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    The RDF Interfaces Specification defines a set of standardized interfaces for working with RDF data in a programming environment. This specification outlines three distinct sets of interfaces: RDF Concept Interfaces, which represent the various RDF Concepts RDF Environment Interfaces, which provide the basic methods required to work with RDF data. RDF Data Interfaces, which are a set of modular interfaces covering common areas of functionality.
Janos Haits

SchemaWeb - RDF Schemas Directory - 0 views

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    "SchemaWeb is a directory of RDF schemas expressed in the RDFS, OWL and DAML+OIL schema languages. SchemaWeb is a place for developers and designers working with RDF. It provides a comprehensive directory of RDF schemas to be browsed and searched by human agents and also an extensive set of web services to be used by software agents that wish to obtain real-time schema information whilst processing RDF data. RDF Schemas are the critical layer of the Semantic Web. They provide the semantic linkage that 'intelligent' software needs to extract value giving information from the raw data defined by RDF triples. "
Janos Haits

SPARQL Query Language for RDF - 0 views

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    RDF is a directed, labeled graph data format for representing information in the Web. This specification defines the syntax and semantics of the SPARQL query language for RDF. SPARQL can be used to express queries across diverse data sources, whether the data is stored natively as RDF or viewed as RDF via middleware. SPARQL contains capabilities for querying required and optional graph patterns along with their conjunctions and disjunctions. SPARQL also supports extensible value testing and constraining queries by source RDF graph. The results of SPARQL queries can be results sets or RDF graphs.
Janos Haits

www.w3.org/TR/rdf-schema/ - 0 views

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    The Resource Description Framework (RDF) is a general-purpose language for representing information in the Web. This specification describes how to use RDF to describe RDF vocabularies. This specification defines a vocabulary for this purpose and defines other built-in RDF vocabulary initially specified in the RDF Model and Syntax Specification.
Janos Haits

D2RQ - Treating Non-RDF Databases as Virtual RDF Graphs - Chris Bizer - 0 views

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    D2RQ is a declarative language to describe mappings between relational database schemata and OWL/RDFS ontologies. The D2RQ Platform uses these mapping to enables applications to access a RDF-view on a non-RDF database through the Jena and Sesame APIs, as well as over the Web via the SPARQL Protocol and as Linked Data.
Janos Haits

RDF - Semantic Web Standards - 0 views

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    RDF is a standard model for data interchange on the Web. RDF has features that facilitate data merging even if the underlying schemas differ, and it specifically supports the evolution of schemas over time without requiring all the data consumers to be changed. RDF extends the linking structure of the Web to use URIs to name the relationship between things as well as the two ends of the link (this is usually referred to as a "triple"). Using this simple model, it allows structured and semi-structured data to be mixed, exposed, and shared across different applications.
Janos Haits

URIBurner.com - 0 views

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    A simple but powerful service that delivers RDF-based structured descriptions of Web addressable resources (documents or real world objects) in a variety of formats through Generic HTTP URIs. The underlying technology is Virtuoso's Sponger, which takes an existing Web-accessible resource (webpage, media) and generates an RDF graph of its metadata using existing well-known ontologies as well as site-specific knowledge. URIBurner then re-presents this data as either a new HTML webpage, or directly as RDF in a variety of serializations (RDF/XML, text/n3, turtle, JSON).
Janos Haits

Soprano - the Qt/C++ RDF framework | RDF on the desktop can be so easy - 0 views

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    Soprano (formerly known as QRDF) is a library which provides a highly usable object-oriented C++/Qt4 framework for RDF data. It uses different RDF storage solutions as backends through a simple plugin system. Soprano is targetted at desktop applications that need a RDF data storage solution. It has been optimized for easy usage and simplicity.
Janos Haits

W3C RDF Working Group - 0 views

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    The mission of the RDF Working Group, part of the Semantic Web Activity, is to update the 2004 version of the Resource Description Framework (RDF) Recommendation. The scope of work is to extend RDF to include some of the features that the community has identified as both desirable and important for interoperability based on experience with the 2004 ...
Janos Haits

schema.rdfs.org - Home - 0 views

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    a complementary effort by people from the Linked Data community to express the terms provided by the Schema.org consortium in RDF. We currently provide static RDFS documents of the Schema.org terms in the formats listed below - and yes, we're heavily working on more ;)
Janos Haits

The D2RQ Platform - Accessing Relational Databases as Virtual RDF Graphs - 0 views

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    The D2RQ Platform is a system for accessing relational databases as virtual, read-only RDF graphs. It offers RDF-based access to the content of relational databases without having to replicate it into an RDF store.
Janos Haits

SPARQL - Wikipedia, the free encyclopedia - 0 views

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    SPARQL (pronounced "sparkle", a recursive acronym for SPARQL Protocol and RDF Query Language) is an RDF query language, that is, a query language for databases, able to retrieve and manipulate data stored in Resource Description Framework format.[1][2] It was made a standard by the RDF Data Access Working Group (DAWG) of the World Wide Web Consortium, and is considered as one of the key technologies of the semantic web.
Janos Haits

cwm - a general purpose data processor for the semantic web - 0 views

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    Cwm (pronounced coom) is a general-purpose data processor for the semantic web, somewhat like sed, awk, etc. for text files or XSLT for XML. It is a forward chaining reasoner which can be used for querying, checking, transforming and filtering information. Its core language is RDF, extended to include rules, and it uses RDF/XML or RDF/N3 (see Notation3 Primer) serializations as required.
Janos Haits

Semantic Web | Drupal Groups - 0 views

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    The group was started at DrupalCon Barcelona 2007 and includes discussions on how to integrate the Semantic Web technologies into Drupal and list the various effort of the community towards enabling RDF in Drupal. Drupal 7 comes with native RDFa support in core. If you want extra RDF capabilities such as other serialization formats and SPARQL support, checkout the RDF Extensions, SPARQL and SPARQL Views contributed projects.
Janos Haits

Microdata to RDF - 0 views

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    HTML microdata [MICRODATA] is an extension to HTML used to embed machine-readable data into HTML documents. Whereas the microdata specification describes a means of markup, the output format is JSON. This specification describes processing rules that may be used to extract RDF [RDF-CONCEPTS] from an HTML document containing microdata.
Janos Haits

OpenCube Toolkit - 2 views

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    "The OpenCube project in general and the component development effort in particular focus on processing of RDF data cubes: multi-dimensional data represented as RDF and structured according to the RDF Data Cube ontology. In the first project stage, the majority of the developed components were targeting the data reuse stage of the lifecycle and aimed more at end users rather than data administrators."
Janos Haits

Easy RDF and SPARQL for LAMP systems - ARC RDF Classes for PHP - 0 views

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    Easy RDF and SPARQL for LAMP systems ARC is a flexible RDF system for semantic web and PHP practitioners. It's free, open-source, easy to use, and runs in most web server environments.
Janos Haits

SPARQL - Semantic Web and Linked Data - Research Guides at UCLA Library - 0 views

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    "SPARQL serves as the search engine for RDF. It is a set of specifications recommended by W3C Recommendation that provide languages and protocols to query and manipulate RDF graph content on the Web or in an RDF triple store."
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