Smob. Open Graph Protocol : Facebook se met au Web sémantique ? Retour le 21 avril au soir : Facebook organise l'événement F8 au cours duquel il va annoncer les évolutions de sa plate-forme à destination des développeurs.
A titre personnel, je n'ai pas vu l'annonce dont je n'ai a priori rien à attendre. Un premier twitt de Nicolas attire mon œil : « Mark Zuckerberg - 3 fois le mot semantic par phrase.. des graphs dans tous les sens avec des connections avec d'autres sites. hmm.. » Attiré, certes, mais sans grand espoir, je continue à vaquer à mes occupations numériques. Quelques minutes plus tard, première annonce concrète, Facebook met à disposition une « Graph API » . « Facebook propose une "Graph API" mais le format = JSON, les bras m'en tombent... Ce dernier essaye de me faire voir le bon côté des choses. . « I think Facebook just announced RDFa support (the Open Graph Protocol) at F8: #rdfa #html5 #f8 (look at the attributes) » Voilà, c'est fait.
Web sémantique : données liées et sémantique des schémas. Web Sémantique et Web Social. Advantages and Myths of RDF. A 10th Birthday Salute to RDF’s Role in Powering Data Interoperability There has been much welcomed visibility for the semantic Web and linked data of late.
Many wonder why it has not happened earlier; and some observe progress has still been too slow. But what is often overlooked is the foundational role of RDF — the Resource Description Framework. From my own perspective focused on the issues of data interoperability and data federation, RDF is the single most important factor in today’s advances. Sure, there have been other models and other formulations, but I think we now see the Goldilocks “just right” combination of expressiveness and simplicity to power the foreseeable future of data interoperability. So, on this 10th anniversary of the birth of RDF [1], I’d like to re-visit and update some much dated discussions regarding the advantages of RDF, and more directly address some of the mis-perceptions and myths that have grown up around this most useful framework.
A Simple Intro to RDF. Comprendre RDF en moins de cinq minutes. L’avenir de l’information : le web de données. Christian Fauré — Vers les “Semantic RIA” La question d’une interface graphique (IHM) pour la navigation et la consultation des données au format RDF est une question lancinante pour tout ceux qui veulent participer à la promotion et à la progression du nombre de triplets RDF au sein du Web.
Mondeca.pdf (Objet application/pdf) Folksemantic. Design an ontology for domain chosen from the list below. - StudentOfFortune.com. Edelweiss:Demos. Semantic Search: The Myth and Reality - ReadWriteWeb. For a few years now people have been talking about semantic search.
Any technology that stands a chance to dethrone Google is of great interest to all of us, particularly one that takes advantage of long-awaited and much-hyped semantic technologies. But no matter how much progress has been made, most of us are still underwhelmed by the results. In head-to-head comparisons with Google, the results have not come out much different. What are we doing wrong? For example, when asked, What is the capital of France? The mistake is that semantic search engines present us with Google-like search box and allow us to enter free form queries. What Problem Are We Trying to Solve? The first confusion in the space comes from the fact that semantic search is being positioned as the answer to all possible problems - from modern search, currently dominated by Google, to problems that are computationally impossible.
As shown in the diagram above basic queries are easily handled by Google. Ideas to Markets: Will We Convey the Meaning of Semantics? The semantic web for publishers and bloggers. The semantic web is often referred to as the “next phase” of the world wide web.
It’s also sometimes referred to — perhaps pretentiously — as “Web 3.0″. Wrapped up in this semantic web is an appearance of artificial intelligence as it involves computers “understanding” content (eg: teaching a machine that “Africa” is a continent and that “Barack Obama” is person and politician). Semantic tagging for dummies Adding semantic power to your website content essentially involves adding machine-readable metadata to your articles or posts that denote relationships and meaning.
This could involve tagging your content according to various categories, such as certain words in an article referring to people, places, companies and/or types of technologies. This metadata could appear as a database field or XML RSS attached to the content. Easy RDF and SPARQL for LAMP systems - ARC RDF Classes for PHP. Freebase Parallax Taunts Us With Awesome Semantic Web Video - ReadWriteWeb.
Staff researcher David François Huynh has created an interesting tool for browsing semantic database Freebase, called Freebase Parallax.
Written up by ZDNet's Oliver Marks, the video Huynh recorded demonstrating Parallax (below) will knock your socks off. Unfortunately, actually using Parallax demonstrates just how far from solid Freebase, one of the semantic web's poster children, really is. The idea is to allow you to apply multiple filters for your searches and embed live charts in a blog. It's a beautiful idea, check out the video. Here's the video below, if you find yourself saying "get to the point already," then skip to about 1:30 in the timeline.
Freebase Parallax: A new way to browse and explore data from David Huynh on Vimeo. Unfortunately, when we tried out a number of searches in Parallax, very few subjects were well populated at all. The example above is nice, but let's say I want to find out something about black women scientists. This ought to work. Semantic web « About the social semantic web. Will The Semantic Web Have a Gender? - ReadWriteWeb. One academic warns that it might and says we need to pay attention to it.
As machines learn to understand what the web means, what perspective will they understand it from? Who is teaching them? "Objective" descriptions of the world and the relationships in it can cause real problems, particularly for people with little power in those relationships. C RDF Validation Service. Sindice - The semantic web index. Semantic Radar. 4. Quelques applications et outils RDF.