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Web sémantique

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Visual RDF. RDF Translator. RDF 1.1 Concepts and Abstract Syntax. Abstract The Resource Description Framework (RDF) is a framework for representing information in the Web.

RDF 1.1 Concepts and Abstract Syntax

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. Status of This Document. RDF 1.1 Primer. Abstract This primer is designed to provide the reader with the basic knowledge required to effectively use RDF.

RDF 1.1 Primer

It introduces the basic concepts of RDF and shows concrete examples of the use of RDF. Secs. 3-5 can be used as a minimalist introduction into the key elements of RDF. Changes between RDF 1.1 and RDF 1.0 (2004 version) are summarized in a separate document: "What's New in RDF 1.1" [RDF11-NEW]. Status of This Document. Semantic Web. I have an idea that I think is very important but I haven’t yet polished to the point where I’m comfortable sharing it.

Semantic Web

I’m going to share it anyway, unpolished, because I think it’s that useful. So here I am, handing you a dull, gray stone, and I’m saying there’s a diamond inside. Maybe even a dilithium crystal. My hope is that a few experts will see what I see and help me safely extract it. Or maybe someone has already extracted it, and they can just show me.

The problem I’m trying to solve is at the core of decentralized (or loosely-coupled) systems. RDF offers a solution to this, but it turns out to be pretty hard to put into practice. Cern.info.ch - Tim Berners-Lee's proposal. Tools - Semantic Web Standards. Overview This Wiki contains a collection of tool references that can help in developing Semantic Web applications.

Tools - Semantic Web Standards

These include complete development environments, editors, libraries or modules for various programming languages, specialized browsers, etc. The goal is to list such tools and not Semantic Web applications in general (the interested reader may consider looking at the W3C SW Use Case Collection for those.) The tool content of this wiki is still to be maintained by the community and not by the W3C staff.

If you are interested in adding to and/or modifying the relevant pages, please consult the separate Tool Contributors’ page. Search possibilities The current Wiki contains references to 336 tools. Search through categories, i.e., reasoners, programming environments, browsers, etc. Last modified/added Tool Data in RDF There is also an option to get one RDF/XML graph for all tools. Other resources Sweet Tools maintained by Michael K. History. W3C Data Activity - Building the Web of Data. More and more Web applications provide a means of accessing data.

W3C Data Activity - Building the Web of Data

From simple visualizations to sophisticated interactive tools, there is a growing reliance on the availability of data which can be “big” or “small”, of diverse origin, and in different formats; it is usually published without prior coordination with other publishers — let alone with precise modeling or common vocabularies. The Data Activity recognizes and works to overcome this diversity to facilitate potentially Web-scale data integration and processing. It does this by providing standard data exchange formats, models, tools, and guidance. The overall vision of the Data Activity is that people and organizations should be able to share data as far as possible using their existing tools and working practices but in a way that enables others to derive and add value, and to utilize it in ways that suit them.

Linked Data - Design Issues. Up to Design Issues The Semantic Web isn't just about putting data on the web.

Linked Data - Design Issues

It is about making links, so that a person or machine can explore the web of data. With linked data, when you have some of it, you can find other, related, data. Like the web of hypertext, the web of data is constructed with documents on the web. However, unlike the web of hypertext, where links are relationships anchors in hypertext documents written in HTML, for data they links between arbitrary things described by RDF,. Use URIs as names for things Use HTTP URIs so that people can look up those names. Simple. The four rules. Linked Data: Evolving the Web into a Global Data Space.

The Linking Open Data cloud diagram. The W3C Markup Validation Service. Berners-Lee: Weaving the Web. Supplementary material to the book The original design and ultimate destiny of the World Wide Web, by its inventor Buy: from Amazon.com (paperback), Barnes & Noble (paperback), Booksamillion (paperback), Borders (paperback), Powells (paperback), or Wordsworth(paperback). * This book is written to address the questions most people ask - From "What were you thinking when you invented it?

Berners-Lee: Weaving the Web

" How It All Started. A Little History of the World Wide Web. See also How It All Started presentation materials from the W3C 10th Anniversary Celebration and other references. from 1945 to 1995 Vannevar Bush writes an article in Atlantic Monthly about a photo-electrical-mechanical device called a Memex, for memory extension, which could make and follow links between documents on microfiche.

A Little History of the World Wide Web

Standards. W3C standards define an Open Web Platform for application development that has the unprecedented potential to enable developers to build rich interactive experiences, powered by vast data stores, that are available on any device.

Standards

Although the boundaries of the platform continue to evolve, industry leaders speak nearly in unison about how HTML5 will be the cornerstone for this platform. But the full strength of the platform relies on many more technologies that W3C and its partners are creating, including CSS, SVG, WOFF, the Semantic Web stack, XML, and a variety of APIs. World Wide Web Consortium Process Document. W3C HTML. In October 2014, the HTML Working Group published HTML5 as W3C Recommendation.

W3C HTML

This specification defines the fifth major revision of the Hypertext Markup Language (HTML), the format used to build Web pages and applications, and the cornerstone of the Open Web Platform. “Today we think nothing of watching video and audio natively in the browser, and nothing of running a browser on a phone,” said Tim Berners-Lee, W3C Director. “We expect to be able to share photos, shop, read the news, and look up information anywhere, on any device.

Though they remain invisible to most users, HTML5 and the Open Web Platform are driving these growing user expectations.” The HTML5 test suite, which includes over 100,000 tests and continues to grow, is strengthening browser interoperability. URL. Cern.info.ch - Tim Berners-Lee's proposal. FileStructure65.pdf. As We May Think. As Director of the Office of Scientific Research and Development, Dr. Vannevar Bush has coordinated the activities of some six thousand leading American scientists in the application of science to warfare. In this significant article he holds up an incentive for scientists when the fighting has ceased. He urges that men of science should then turn to the massive task of making more accessible our bewildering store of knowledge. For years inventions have extended man's physical powers rather than the powers of his mind.