Ruby and the Semantic Web

This evening, I gave a talk on using Ruby RDF.rb and assorted gems at the Lotico San Francisco Semantic Meetup. I’ve uploaded slides to Slide Share.

I also showed a simple demo using the GitHub API to create FOAF and DOAP records for accounts and repositories, and to do some simple navigation. The demo is running at https://greggkellogg.net/github-lod, and source is (of course) available on GitHub.

The demo is not intended to be a complete application, but it shows some basic capabilities [Ruby LinkedData][(http://rubygems.org/gems/linkeddata) for generating RDF in a variety of formats from Active Record models (which cache the GitHub API calls). The Web-pages are, of course, marked up with RDFa, and you can use content-negotiation, or append an appropriate extension to the URLs, to retrieve the data in alternative RDF formats.