Web sémantique & formats standards

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Warning: The microdata syntax has changed (e.g. item="foo" is now itemscope itemtype="foo") since this blog post was written. Don’t copy the examples. I spent last weekend with my good friend Emil sketching a REST-style interface for his graph database Neo4j. Microformats vs RDFa vs Microdata « Philip Jägenstedt Microformats vs RDFa vs Microdata « Philip Jägenstedt

Microformats

Last week the microformats.org community celebrated its 7th birthday at a gathering hosted by Mozilla in San Francisco and recognized accomplishments, challenges, and opportunities. Humans First: Admin Emeriti & New Admins The microformats tagline “humans first, machines second” forms the basis of many of our principles, and in that regard, we’d like to recognize a few people and thank them for their years of volunteer service as community admins: They’ve each been essential positive community contributors and guides over the years, and as admin emeriti are always welcome back should they decided to become admins again. Microformats
developerWorks : XML : Exploring Semantic Web Technologies
developerWorks : XML : Technical library view
Cette page vient d'être traduite, mais elle a besoin d'un relecteur différent du traducteur. Pensez également à toujours vérifier le contenu avec sa toute dernière version en anglais. Les microformats permettent aux sites Web de fournir des données sémantiques au navigateur afin que celui-ci puisse présenter un résumé des informations présentes sur une page sans avoir à connaître de manière particulière d'analyser son contenu. Utilisation de microformats - MDC Utilisation de microformats - MDC
Using microformats - MDC Microformats allow web sites to provide semantic data to the browser in order to make it possible to present summaries of the information on a page without having to know how to parse the document itself. Firefox 3 implements a global Microformats object that provides access to microformats. This object and its API make finding and reading microformats easy to do. Loading the microformats API Using microformats - MDC
Operator - Modules pour Firefox
Tails Export :: Modules pour Firefox Tails Export :: Modules pour Firefox An extension for Showing and Exporting Microformats. Currently it supports the following formats:* hCard [export to .vcf file]* hCalendar [export to .ics file]* hReview* xFolk* Rel-license The statusbar contains a microformat logo that lights up when it detects known microformats. It is grey when it could detect none. Clicking on the logo opens up the sidebar with a list of all microformats on the page. For hcards and hcalendar microformats these contain an export button.
MozCC :: Modules pour Firefox
list of microformats

poshformats are data formats constructed from the use of semantic class names. microformats are the proper subset of poshformats which have been developed via the microformats process and principles. origin Given that web designers have been making up their own controlled vocabularies for class names as part of POSH modern web design practices for quite some time, and that there continues to be a strong tendency for folks to want to invent their own a-priori formats by starting with a set of class names (rather than following the microformats process), it makes sense to provide a label for such class names. poshformats poshformats
xmdp
XMDP - XHTML Meta Data Profiles XMDP™ (XHTML Meta Data Profiles) is a simple XHTML-based format for defining HTML meta data profiles easy to read and write by both humans and machines. The markup is a profile of XHTML. To find out how to write and use XMDP, read the following sections: Introduction, Description and Example XMDP - XHTML Meta Data Profiles
XMDP: Introduction and Format Description XMDP: Introduction and Format Description Author(s) Tantek Çelik Introduction HTML4 has several mechanisms for describing meta data, the most well known being the <meta> element. <meta> is often used to denote the author of a document:
xmdp-fr

microformats

microformats microformats are extensions to HTML for marking up people , events , blog posts , reviews , recipes etc. Introduction This wiki is the central resource of the microformats community and provides microformats authoring guides, references, specifications, drafts, publishing patterns, research, brainstorming, and issue tracking. Get Started
microformats-fr Les microformats sont des extensions au HTML pour marquer les personnes et organisations, événements, endroits, billets de blog, produits, critiques, C.V., recettes etc. Les sites utilisent les microformats pour publier une API standard qui est consommée et utilisée par les moteurs de recherche, navigateurs et d'autres outils. Regardez C'est Quoi les Microformats pour en savoir plus. nouveau !

microformats-fr

Microdata (HTML5) Microdata is a WHATWG HTML specification used to nest metadata within existing content on web pages.[1] Search engines, web crawlers, and browsers can extract and process Microdata from a web page and use it to provide a richer browsing experience for users. Search engines benefit greatly from direct access to this structured data because it allows search engines to understand the information on web pages and provide more relevant results to users.[2][3] Microdata uses a supporting vocabulary to describe an item and name-value pairs to assign values to its properties.[4] Microdata is an attempt to provide a simpler[citation needed] way of annotating HTML elements with machine-readable tags than the similar approaches of using RDFa and microformats. Microdata vocabularies provide the semantics, or meaning of an Item. Web developers can design a custom vocabulary or use vocabularies available on the web.
This site provides a collection of schemas, i.e., html tags, that webmasters can use to markup their pages in ways recognized by major search providers. Search engines including Bing, Google, Yahoo! and Yandex rely on this markup to improve the display of search results, making it easier for people to find the right web pages.

schema.org

Getting Started

Most webmasters are familiar with HTML tags on their pages. Usually, HTML tags tell the browser how to display the information included in the tag. For example, <h1>Avatar</h1> tells the browser to display the text string "Avatar" in a heading 1 format. However, the HTML tag doesn't give any information about what that text string means—"Avatar" could refer to the hugely successful 3D movie, or it could refer to a type of profile picture—and this can make it more difficult for search engines to intelligently display relevant content to a user.
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? FAQ
Schema.org Discussions
Data-Vocabulary.org | Official Website
HTML Microdata Abstract This specification defines the HTML microdata mechanism. This mechanism allows machine-readable data to be embedded in HTML documents in an easy-to-write manner, with an unambiguous parsing model.
5 Microdata — HTML5 (including next generation additions still i
HTML Microdata
Microdata rdf
list of microdatas / RDFa

Microdata support for Rich Snippets
RDFa
RDFa Primer
About RDFa
Introduction to RDFa
RDFa
Comparisons between semantic web formats

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