RDF Extraction Tool

This command line tool accepts a URI on the command line and produces a set of RDF files that can be fed to a standard parser.

Actually this is a generous description. Currently it extracts a set of blurbs of RDF and a list of URI's it believes contain RDF. Currently the only documents parsed are HTML.

There are a great many ways to include RDF in HTML files. I located one summary of possible methods. I am also aware that Creative Commons advocates storing the RDF that describes the license for a page in a comment tag.

I have created a list of methods of storing RDF in HTML which I want to support with RET,

• In a comment
• Jammed in the head
• Use new dtd and stick it in the head
• In an object
• In a script
• In a link tag
• In a meta tag
  • I can extract these meta tags but I don't convert them to RDF yet
• hyperRDF
• Augmented Metadata
  • I don't handle hrefs, and don't turn these into RDF yet
• Create a <metadata> tag

You can download RET from this page.