The document discusses using XSLT to transform RDF/XML documents. It provides examples of RDF/XML code representing relationships between characters from the TV show Family Guy. It then discusses some of the challenges of using XSLT to process RDF/XML directly due to the many different syntactic ways the same graph can be expressed in RDF/XML. The presentation concludes by introducing a tool that allows operating on the abstract graph model rather than the RDF/XML syntax to more easily transform RDF graphs.

1. graphthinking
RDF Transformations
Felix Ostrowski (graphthinking, @literarymachine)
(Virtual) Lightning Talk
ELAG, June 13th 2014, University of Bath

2. graphthinking
Using XSLT to process RDF(/XML)?
<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF
xmlns:foaf="http://xmlns.com/foaf/0.1/"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns="file:///home/fo/tmp/griffins.ttl#">
<foaf:Person rdf:about="file:///home/fo/tmp/griffins.ttl#peter"
foaf:familyName="Griffin" foaf:givenName="Peter">
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#brian"/>
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#chris"/>
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#lois"/>
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#megan"/>
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#stewie"/>
</foaf:Person>
</rdf:RDF>
<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF
xmlns:foaf="http://xmlns.com/foaf/0.1/"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns="file:///home/fo/tmp/griffins.ttl#">
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Person"/>
</rdf:Description>
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<foaf:givenName>Peter</foaf:givenName>
</rdf:Description>
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<foaf:familyName>Griffin</foaf:familyName>
</rdf:Description>
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#lois"/>
</rdf:Description>
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#megan"/>
</rdf:Description>
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#chris"/>
</rdf:Description>
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#stewie"/>
</rdf:Description>
<rdf:Description rdf:about="file:///home/fo/tmp/griffins.ttl#peter">
<foaf:knows rdf:resource="file:///home/fo/tmp/griffins.ttl#brian"/>
</rdf:Description>
</rdf:RDF>
And anything inbetween...

3. graphthinking
xsl:template match="what?"
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="rdf:Description">
...
</xsl:template>
<xsl:template match="foaf:Person">
...
</xsl:template>
</xsl:stylesheet>

4. graphthinking
No, thank you!
(Too many syntactically different ways to express
the same graph in RDF/XML)

5. graphthinking
Idea: operate on the abstract graph model

6. graphthinking
http://demo.graphthinking.com/rdft/

7. graphthinking

8. graphthinking
Tada!

9. graphthinking
Question: does this make sense?