Federated SPARQL query options. For general solutions that don't rely on SPARQL 1.1 features there is Olaf Hartig's SQUIN or the Semantic Web Client Library from Chris Bizer et al which may be useful to you.
In terms of pure SPARQL solutions my own framework which I develop (dotNetRDF) also supports the SERVICE keyword in it's SPARQL engine just like ARQ does in Jena. Announcing the LATC Data Publication & Consumption Tools Library. A new resource is available for linked data professionals: “In order to support data set owners to publish their datasets as Linked Data on the Web, as well as to support data consumers to access and integrate Linked Data from the Web, the LATC project has compiled a library of open source toolkits that cover all stages of the Linked Data publication (modeling, linking, serving) and consumption process (discovery, consolidation, application).
By gathering high-quality open source tools in the form of a consistent library, we hope to lower the barriers to publishing Linked Data as well as to interacting with the Web of Data.” The announcement continues, “This website presents the initial version of the LATC Data Publication & Consumption Tools Library. The website gives an overview of the main steps of the Linked Data publication and consumption process and associates open source tools from the library to each step in the process.” Image: Courtesy LATC. Callimachus - Callimachus is a Semantic Web framework for easily building hyperlinked Web applications. ElasticSearch - Un moteur de recherche on the cloud basé sur Lucène. Elasticsearch est un moteur de recherche open source à la fois puissant et distribué (Cloud) basé sur Lucène.
Kwaga partners with Viadeo to add professional profiles to its semantic email filter. Kwaga, which offers a semantic toolkit to help manage email, is partnering with LinkedIn competitor Viadeo to make the social network’s 30m user profiles available within Gmail, with other email services to follow.
Specifically, Viadeo support is being rolled out first for Kwaga Context so that a sender’s Viadeo profile (if available) will be displayed, as well as other contextual information, at the bottom of each email inside of Gmail. Of note, Kwaga Context already supports LinkedIn and Twitter profiles. In addition to pulling in information about the sender from those supported social networks, Kwaga Context also offers a nifty feature that uses semantic technology to remind a user when important emails have been forgotten or to flag up emails that require more attention or a particular call to action.
Think Gmail’s Priority Inbox but a lot smarter. Kwaga’s flagship product, Evercontact, is an email assistant that… Learn More It includes the brands Viadeo, ApnaCircle, and Tianji. Kwaga partners with Viadeo to add professional profiles to its semantic email filter. The Semantic Web & THE POWER OF PULL » Introduction. How the pull paradigm and the semantic web combine to help businesses face the challenges of the future.
The Problem On the Web today, we see millions of web sites, each of which presents web pages and documents. These are simply electronic versions of the old paper-based ways of doing things: writing checks, filing taxes, looking at menus, catalog pages, magazines, etc. When you search for something on Google, you get a list of web sites that may or may not have what you’re looking for, based on keywords found in the text. You have to look at each one and decide whether it answers your question. Our information infrastructure isn’t scaling up very well at all.
The solution to our information problem is the semantic web and the pull paradigm. Realtime Social Semantic Web « Laurens goes semantic… In another similar project we are trying to bring realtime RDF annotation to the Social Web!
We have quite successfully implemented a basic client that uses the Twitter Streaming API filter to track tweets containing certain keywords. Anyway you can try it here: SEO, the Semantic Web and Information Discovery. The following is a transcript of a talk presented at a dual meetup of Vancouver Search Engine Marketing Group and the The Vancouver Semantic Web Meetup Group on 6 January 2011.
One SPARQL end point per dataset, One end point to query them all « Semantic Web world for you. Althought being commonly depicted as one giant graph, the Web of Data is not a single entity that can be queried.
Instead, it’s a distributed architecture made of different datasets each providing some triples (see the LOD Cloud picture and CKAN.net). Each of these data source can be queried separately, most often through an end point understanding the SPARQL query language. Looking for answers making use of information spanning over different data sets is a more challenging task as the mechanisms used internally to query one data set (database-like joins, query planning, …) do not scale easily over several data sources. When you want to combine information from, say DBPedia and the Semantic Web doog food site, the easiest and quickest workaround is to download the content of the two datasets, eventually filtering out triples you don’t need, and load the content retrieved into a single data store.
Let’s suppose you want to find some persons and the capital of the country they live in: Web² PR and Web 3.0. 6,012 views Featured in: Business The most exciting development in PR (and marketing) since the Cluetrain. ...
The most exciting development in PR (and marketing) since the Cluetrain. The presentation introduces and explains the Semantic Web (aka Web 3.0) and identifies why this is of critical importance, now, to the influence disciplines. It concludes by outlining two Semantic Web ontologies required of the PR industry in its contribution to the growth and usefulness of Linked Data and calls for collaborative support in their development. SalsaDev - When Information Makes Sense. Web 3.0. RDFaiser votre blog, 2ème partie : la pratique. Easy RDF and SPARQL for LAMP systems - ARC RDF Classes for PHP. Les RDA en RDF. Dans le dernier Dlib, on peut lire un article très intéressant de Karen Coyle, Diane Hillmann, Jon Phipps et Gordon Dunsire sur l'expression de RDA en RDF.
Il rend compte d'un travail effectué dans le cadre du groupe de travail DCMI/RDA qui comme son nom l'indique travaille sur le rapprochement entre Dublin Core et RDA. Pour mémoire, les RDA (Resource Description and Access) sont un ensemble de nouvelles règles de catalogage en cours d'élaboration dans la communauté anglo-saxonne, dont le principal caractère novateur est de prendre acte de la modélisation définie par les FRBR. En fait ce qu'ils présentent dans l'article c'est un premier travail pour exprimer les RDA sous la forme d'une ontologie en RDF, qui est disponible en ligne dans le répertoire de métadonnées de la NSDL. L'article rappelle qu'il s'agit d'un premier travail, qui arrive en avance de phase par rapport à la version définitive de RDA (prévue en juin). Le premier étant l'alignement avec les FRBR. Voilà pour l'article.
RDA Vocabularies: Process, Outcome, Use. D-Lib Magazine January/February 2010 Volume 16, Number 1/2Table of Contents RDA Vocabularies: Process, Outcome, Use Printer-friendly Version Abstract. Pearltrees, RDF & Perl.