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RDF

FEB 26th 2010

BuedaA large percentage of content that users deal with on a daily basis is created by other users. Every minute more than 90,000 videos and images are uploaded to YouTube, Flickr and other social media websites, yet this represents a relatively small revenue percentage when compared with traditional media. We believe that one reason for this is the publisher's lack of ability to understand high density content that lacks the adequate description. With mobile platforms providing users with easy methods for rich media upload, this problem will rapidly increase.

Continue reading Bueda API Turns Tags into RDF URIs

JAN 15th 2009

Oracle 11gOracle 10g Release 2 / Oracle 11g offers a robust, scalable, secure platform to store RDF and OWL data. It allows efficient storage, loading and querying of semantic data. Queries are enhanced by adding relationships (ontologies) to data and evaluated on the basis of semantics. Data storage is in the form of RDF triples (Subject, Predicate, Object) and can scale up to millions of triples. The triples stored in the semantic data store are modeled as a graphed structure. All the data is stored in a single central schema allowing access to users for loading and querying data.

Continue reading Semantic Data Storage in Oracle

DEC 18th 2008

Calling All RDF Dumps

Published 8 years ago by James Simmons

Today on the Linking Open Data mailing list, Kingsley Idehen of OpenLink Software announced that he is preparing to load the entire LOD cloud into Virtuoso 6.0 Cluster Edition. The datasets are being added to a table on the ESW wiki, making it convenient for anyone doing Semantic Web research to get a hold of the datasets. Once all the datasets are added we should have a better idea of how much linked data there really is out there. This may also raise the bar for other triple stores and force them to develop methods for storing several billion triples.

Continue reading Calling All RDF Dumps

semantic weltbild 2.0 wrote a short article about NEPOMUK-KDE, a project whose aim is to bring RDF's resource annotation to the KDE desktop environment. NEPOMUK-KDE is a sub-project of the Semantic-Desktop project Nepomuk which aims to provide a full implementation of the standards and APIs defined in Nepomuk on the KDE desktop. As a sub-project of Nepomuk the two main issues are the maintenance and intensive usage of metadata throughout the desktop and powerful peer-to-peer collaboration techiques. This is accomplished in part by ditching the simplistic, string-based tagging model in favor of using RDF. If only this was for GNOME. Check it out!

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NOV 14th 2007

Danny Ayers has updated the RDF Review Vocabulary with a handful of new terms (suggested by ITerating and Revyu, two entities currently deploying this vocabulary), and also made it OWL DL-friendly. He's also set it up as a GRDDL-enabled HTML meta data profile for the hReview microformat. He says still has some debugging to do, and wants to put together a diagram showing the classes and properties.

Continue reading Updates Made to RDF Review Vocabulary

SEP 21st 2007

Ping the Semantic WebPing the Semantic Web, the repository for RDF documents, has a page that lists every namespace they've come across as well as the number of references to each namespace. I've listed the top 20 namespaces and the number of references to each. It's interesting to see the sharp drop in references once you get past the top 5. Each of the links below point to a Zitgist Browser page for that namespace so that you can explore them further.

Continue reading Top 20 Namespaces via Ping the Semantic Web

JAN 27th 2007

Appmosphere RDF ClassesARC is a lightweight, SPARQL-enabled RDF system for mainstream Web projects. It is written in PHP and has been optimized for shared (or performance- or privilege-limited) Web environments. ARC facilitates the integration of RDF and SPARQL into PHP/MySQL frameworks.

ARC is a very well documented project, which I think is important for its success. Their documentation is clear, concise, and provides plenty of inline sample code to examine as you read and learn.

Continue reading ARC - RDF and SPARQL for PHP developers

JAN 14th 2007

SwoogleSwoogle describes itself as being the search engine for the Semantic Web. Swoogle crawls the web looking for RDF documents. At this time Swoogle offers the these services:

  • Search ontologies and instance data
  • Search terms (URIs that have been defined as classes and properties)
  • Provide metadata of Semantic Web documents
  • Support browsing the Semantic Web
  • Archive different versions of Semantic Web documents

Continue reading Swoogle - the Semantic Web search engine

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