Samuel's Tech Blog

I just created a new release of the RDFIO MediaWiki extension. A somewhat detailed list of the changes can be found in the change log. The relevant links:

• Download tarball
• Svn repo url: http://smwrdfio.googlecode.com/svn/branches/0.3.x
• Install instructions

New for this release is a "export by ontology" feature, that - when possible - restricts the URIs used for a wiki page to only those that appears in an ontology that the user points to. To give an idea of this feature see the following screenshot:

On the page "Samuel", I have one fact:

[[has blog::http://saml.rilspace.org]]

... and on the page "Property:has_blog", there are a number of facts, including:

[[Equivalent URI::http://xmlns.com/foaf/0.1/weblog]]
[[Equivalent URI::http://example.org/ExampleOntology/weblog]]

What will happen when submitting the form in the screenshot is; if I click only "Output Equivalent URIs", then both of the above facts will be exported, but by enabling "Filter by Vocabulary" and setting the URL to FOAF:s definition file, the export will be filtered to only contain the first fact, which is included in the FOAF definition.

Current GSoC status

From the "remaining TODO list" from my last blog post, the following are finished with this release:

1. In the SPARQL endpoint, enable querying by any URI specified as equivalent URI
2. For RDF export, implement an "export by ontology" option, that - when possible - restricts the URIs used for a wiki page to only those that appears in an ontology that the user points to.

The remaining items ones are now:

1. Create an HTML interface for interactively configureing how wiki titles should be chosen for RDF entities for which no preferred "wiki title property" (such as rdfs:label, dc:title etc.) was found.
2. Add "pseudo namespaces" as an option for choosing wiki titles from general RDF URIs (not only properties!). I.e, the possibility to abbreviate a part of an URI into a pseudo-namespace, making the URI more fit for use as wiki title. (For properties, there if often a well known abbreviation for the corresponding vocabulary/ontology's base URI, but this is often not the case for general RDF entities, which can often be from some user defined data etc).
3. If time permits:

• Implement filter by "export rdf" property.