Web sémantique RDF Data & Metadata

Facebook Twitter

Le web à venir par Tim Berners-Lee. Raw data. Raw datas (also known as primary data) is a term for data collected from a source.

Raw data

Raw data has not been subjected to processing or any other manipulation, and are also referred to as primary data. Raw data is a relative term (see data). Raw data can be input to a computer program or used in manual procedures such as analyzing statistics from a survey. The term can refer to the binary data on electronic storage devices such as hard disk drives (also referred to as low-level data). In computing, raw data may have the following attributes: possibly containing errors, not validated; in different (colloquial) formats; uncoded or unformatted; and suspect, requiring confirmation or citation.

Semantic Web. W3C's Semantic Web logo The Semantic Web is a collaborative movement led by international standards body the World Wide Web Consortium (W3C).[1] The standard promotes common data formats on the World Wide Web.

Semantic Web

By encouraging the inclusion of semantic content in web pages, the Semantic Web aims at converting the current web, dominated by unstructured and semi-structured documents into a "web of data". The Semantic Web stack builds on the W3C's Resource Description Framework (RDF).[2] According to the W3C, "The Semantic Web provides a common framework that allows data to be shared and reused across application, enterprise, and community boundaries. Linked data. An introductory overview of Linked Open Data in the context of cultural institutions.

Linked data

In computing, linked data (often capitalized as Linked Data) describes a method of publishing structured data so that it can be interlinked and become more useful. It builds upon standard Web technologies such as HTTP, RDF and URIs, but rather than using them to serve web pages for human readers, it extends them to share information in a way that can be read automatically by computers. This enables data from different sources to be connected and queried.[1] Tim Berners-Lee, director of the World Wide Web Consortium, coined the term in a design note discussing issues around the Semantic Web project.[2] Principles[edit] Linked Data. What is Linked Data?

Linked Data

The Semantic Web is a Web of Data — of dates and titles and part numbers and chemical properties and any other data one might conceive of. The collection of Semantic Web technologies (RDF, OWL, SKOS, SPARQL, etc.) provides an environment where application can query that data, draw inferences using vocabularies, etc. However, to make the Web of Data a reality, it is important to have the huge amount of data on the Web available in a standard format, reachable and manageable by Semantic Web tools. Furthermore, not only does the Semantic Web need access to data, but relationships among data should be made available, too, to create a Web of Data (as opposed to a sheer collection of datasets).

This collection of interrelated datasets on the Web can also be referred to as Linked Data. W3C Standards. Wiki.dbpedia.org : About. DBpedia is a crowd-sourced community effort to extract structured information from Wikipedia and make this information available on the Web.

wiki.dbpedia.org : About

DBpedia allows you to ask sophisticated queries against Wikipedia, and to link the different data sets on the Web to Wikipedia data. We hope that this work will make it easier for the huge amount of information in Wikipedia to be used in some new interesting ways. Furthermore, it might inspire new mechanisms for navigating, linking, and improving the encyclopedia itself. How RDF Databases Differ from Other NoSQL Solutions - The Datagraph Blog. This started out as an answer at Semantic Overflow on how RDF database systems differ from other currently available NoSQL solutions.

How RDF Databases Differ from Other NoSQL Solutions - The Datagraph Blog

I've here expanded the answer somewhat and added some general-audience context. RDF database systems are the only standardized NoSQL solutions available at the moment, being built on a simple, uniform data model and a powerful, declarative query language. These systems offer data portability and toolchain interoperability among the dozens of competing implementations that are available at present, avoiding any need to bet the farm on a particular product or vendor. In case you're not familiar with the term, NoSQL ("Not only SQL") is a loosely-defined umbrella moniker for describing the new generation of non-relational database systems that have sprung up in the last several years.

What is RDF and what is it good for? Go! (langage de programmation) Keyword. Heritrix. Robot d'indexation. FR: La nature de la toile ? LinkedData vs Ontology. Metaweb. Over time we’ve improved search by deepening our understanding of queries and web pages.

Metaweb

The web isn’t merely words—it’s information about things in the real world, and understanding the relationships between real-world entities can help us deliver relevant information more quickly. Today, we’ve acquired Metaweb, a company that maintains an open database of things in the world. Working together we want to improve search and make the web richer and more meaningful for everyone. With efforts like rich snippets and the search answers feature, we’re just beginning to apply our understanding of the web to make search better. Introduction à RDFa.

FR: Comment publier des données liées. JSON to RDF. Sometimes, if you stand in the right place and squint, JSON and RDF line up perfectly.

JSON to RDF

Each time I notice this, I badly want a way to make them line up all the time, no matter where you’re standing. And, actually, I think it’s pretty easy. I’ve seen a few proposals for how to work with RDF data in JSON, but the ones I’ve seen put too much burden on JSON folks to accomodate RDF. De Web 1.0 à Web 2.0 & Web 3.0. LinkedData vs Ontologies. Screencast: DBpedia & W3C Linking Open Data. DBpedia. DBpedia ( from "DB" for "database" ) is a project aiming to extract structured content from the information created as part of the Wikipedia project.

DBpedia

This structured information is then made available on the World Wide Web.[1] DBpedia allows users to query relationships and properties associated with Wikipedia resources, including links to other related datasets.[2] DBpedia has been described by Tim Berners-Lee as one of the more famous parts of the decentralized Linked Data effort.[3] Background[edit] The project was started by people at the Free University of Berlin and the University of Leipzig, in collaboration with OpenLink Software,[4] and the first publicly available dataset was published in 2007. Linked Data. RDF Web Applications Working Group.

Current and Upcoming Events Teleconferences: The first Thursday of each month at 10am US Eastern time.

RDF Web Applications Working Group

An agenda is sent to rdfa-wg 24 hours in advance; minutes follow within a day or two. Will be monitoring comments on any specification or test cases. Web sémantique : Google, Yahoo et Bing font enfin route commune. FAQ - schema.org. What is the purpose of schema.org? Why are Google, Bing, Yandex and Yahoo! Collaborating? Aren't you competitors? There are lots of schemas out there. Why create a new one? Semantic Web roadmap. Up to Design Issues A road map for the future, an architectural plan untested by anything except thought experiments. This was written as part of a requested road map for future Web design, from a level of 20,000ft. It was spun off from an Architectural overview for an area which required more elaboration than that overview could afford.

Necessarily, from 20,000 feet, large things seem to get a small mention. Linked Data - Design Issues. Up to Design Issues The Semantic Web isn't just about putting data on the web. 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. Semantic Web History: Nodes and Arcs 1989-1999 (the WWW Proposal. Initial version: 1999-11-12, Dan Brickley danbri@w3.org Revised: March 2001 Status: This is a work in progress, and an early release of the document for feedback from the RDF Interest Group.

It is intended as an informal discussion document, and is not a formal publication of any working group, or of the W3C itself. The Semantic Web - on the respective Roles of XML an. BibTeX Bookmark OpenURL Abstract. Métadonnée de photos - Valorisation/Récupération. Web thinkers. Web sémantique.