Semantic Web Crawling: A Sitemap Extention. Abstract This document describes an extension to the Sitemap protocol targeted at the efficient discovery and use of RDF data.
The extension allows Data publishers to state where documents containing RDF data are located, and to advertise alternative means to access it, such as data dumps and SPARQL endpoints. Semantic Web clients and crawlers can use this information to choose the most efficient access method for the task they have to perform. Web sémantique : quand le Web devient données : Introduction. Quand la donnée prend le dessus.
C’est ainsi que pourrait être, très vulgairement, résumé le Web sémantique. Un vaste projet qui a éclaté aux yeux de tous suite à l‘intervention de Tim Berners-Lee, patron du W3C - et également père du Web -, le consortium en charge de définir les standards du Web. Dans un entretien réalisé par le Courrier Unesco en 2000, il est parvenu à transmettre sa vision d’un autre web. Non pas le web 2.0, qui aujourd’hui bouleverse les usages du Web en donnant la parole aux internautes, en rendant le web plus participatif, non pas le Web 3.0 dont les contours restent encore aujourd’hui à géométrie variable - on parle notamment d’Internet des objets. Mais, bien un principe qui doit doter le Web d’une part d’intelligence qui lui fait défaut aujourd’hui.
SemanticTweet - twitter meets the semantic web. Présentation Web3. L'association des professionnels de l'information et de la docum. SweoIG/TaskForces/CommunityProjects/LinkingOpenData - ESW Wiki. News 2014-12-03: The 8th edition of the Linked Data on the Web workshop will take place at WWW2015 in Florence, Italy.
The paper submission deadline for the workshop is 15 March, 2015. 2014-09-10: An updated version of the LOD Cloud diagram has been published. Linked Data - Connect Distributed Data across the. RDF Book Mashup. The RDF book mashup demonstrates how Web 2.0 data sources like Amazon, Google or Yahoo can be integrated into the Semantic Web.
The RDF book mashup makes information about books, their authors, reviews, and online bookstores available on the Semantic Web. This information can be used by RDF tools and you can link to it from your own Semantic Web data. Contents News 2009/07/17: GoodRelations support added. Main Page - Tetherless World Wiki. Semantic Web Client Library. The Sematic Web Client Library represents the complete Semantic Web as a single RDF graph.
The library enables applications to query this global graph using SPARQL- and find(SPO) queries. To answer queries, the library dynamically retrieves information from the Semantic Web by dereferencing HTTP URIs, by following rdfs:seeAlso links, and by querying the Sindice search engine. The library is written in Java and is based on the Jena framework. Contents. Seven Pillars of the Open Semantic Enterprise. Semantic Web Dog Food. Web sémantique : quand le Web devient données : Introduction.
SPARQL Query Language for RDF. W3C Recommendation 15 January 2008 New Version Available: SPARQL 1.1 (Document Status Update, 26 March 2013) The SPARQL Working Group has produced a W3C Recommendation for a new version of SPARQL which adds features to this 2008 version.
Resource Description Framework (RDF) / W3C Semantic Web Activity. Overview 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.
This linking structure forms a directed, labeled graph, where the edges represent the named link between two resources, represented by the graph nodes. Recommended Reading The RDF 1.1 specification consists of a suite of W3C Recommendations and Working Group Notes, published in 2014. Notation3 (N3): A readable RDF syntax. Up to Design Issues An RDF language for the Semantic Web This article gives an operational semantics for Notation3 (N3) and some RDF properties for expressing logic.
These properties, together with N3's extensions of RDF to include variables and nested graphs, allow N3 to be used to express rules in a web environment. Resource Description Framework (RDF) Schema Specification 1.0. W3C Candidate Recommendation 27 March 2000 This Version: Latest Version: Previous Version: Editors: Dan Brickley, University of Bristol.
Primer - Getting into the semantic web and RDF using N3. [translations into other languages ] The world of the semantic web, as based on RDF, is really simple at the base.
This article shows you how to get started. It uses a simplified teaching language -- Notation 3 or N3 -- which is basically equivalent to RDF in its XML syntax, but easier to scribble when getting started. Subject, verb and object In RDF, information is simply a collection of statements, each with a subject, verb and object - and nothing else. <#pat><#knows><#jo> . Everything, be it subject, verb, or object, is identified with a Uniform Resource Identifier. There is one exception: the object (only) can be a literal, such as a string or integer: <#pat><#knows><#jo> . RDF Automation Ushering in Semantic Web. Researchers with the Rensselaer Polytechnic Institute (RPI) have thrown themselves head over heels into the semantic web. At this year's 8th International Semantic Web Conference, they presented a paper (download the PDF) focused on the problem of automatically generating the metadata that many semantic web functionalities rely on.
Talking about RDF closures can cause eyelids to flutter, but the RPI folks aren't living in some theoretical world. They've been digging hard into large, public data sets and have learned some important lessons about making data more useful.
SWSE. Tools. This page gives an overview of software tools related to the Semantic Web or to semantic technologies in general. Due to the large amount of tools being created in the community, this site is always somewhat outdated. Contributions and updates are welcomed. See also: Tool Chains Adding your own Adding your own tool is as easy as creating a page. Do not forget to use a suitable category to classify the tool, otherwise it will not appear below. If your tool is an OWL 2 implementation or a RIF implementation not yet listed here, please consider to add it. Data viewer directory. OpenCyc.org. The Tabulator (1) Tim Berners-Lee Tim coded up the original version at odd times in November and December 2005. Tabulator: Generic data browser.
The Tabulator project is a generic data browser and editor. Using outline and table modes, it provides a way to browse RDF data on the web. RDF is the standard for inter-application data exchange. You can use it in two ways. Web 3.0.