Research Log of Web Science Students

Computer Science is not simply programming

Problems with making our pages RDF

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I don’t how to call it but that’s exactly what we want to do. We want to be able to describe Hard-Wire, its webpages, using RDF:

The Resource Description Framework (RDF) is a W3C standard for describing Web resources, such as the title, author, modification date, content, and copyright information of a Web page.

RDF is written in XML. At this point I am wondering how different it is from a SOAP envelope and how it is used. Both of them describe things, although RDF is more for webpages a.k.a resources. SOAP is used for web-services while RDF is not transmitted. It remains where it is (I think) and some sort of search engine crawls the web for RDF documents using an sql like query language called SPARQL.

We want to use RDF to be able to describe Hard-Wire and the courses that (resources) made by its users using Common Tags and then too its users using Friend of a Friend (FOAF).

When I read the documentation on Common-Tags, I thought it would be easy to implement this because the examples were cut and paste:

<body xmlns:ctag="http://commontag.org/ns#" rel="ctag:tagged">
    <span typeof="ctag:Tag" 
             rel="ctag:means" 
             resource="http://rdf.freebase.com/ns/en.u2" 
             property="ctag:label" content="U2"/>
    </span>
</body>

It’s a good thing that we’re using Eclipse in our dev work. It’s telling us that something is wrong with our markup. It’s underlining the common-tags markup with yellow returning:

Undefined attribute name

Something is wrong and that I think the markup displayed in the Common-Tags website is malformed. Going on with the wrong markup completely defeats the purpose of describing our webpages with common tags in the first place. First of because it won’t be searchable by SPARQL or the search engines that support searching Common Tags like Yahoo!.

What to do? Call for help.

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Written by Jose Asuncion

October 9, 2009 at 5:27 am

Posted in Hardwire

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