clauwa.info

I will quickly try to summarize the state of my work for my supervision meeting today.

*) Identified and described Data Portability problems in the Social Web –> argued that Semantic Web Technologies provide the required mechanisms to overcome the identified limitations

*) Developed Use Cases and derived requirements

*) Checked if existing Portability Tools can answer my requirements

Develop demonstrator which shows how Semantic Web technologies can be used to overcome the identified limitations

Demonstrator consists of:

*) Browser Extension which allows to extract and reuse content and resources of an source application site on a specific target application site. The target application site must be a Wordpress Blog, because the Browser extension implements the WP API. The source application site must embed the semantic metadata via RDFa. External semantic metadata are not used by the Browser Extension, because its difficult to find out to which resource of an external RDF file a selected content part belongs. The positional information provided via the RDFa serialization makes it easy to find out to which resource a selected content part belongs.  For Wordpress only an RDF/XML exporter exist, but no RDFa Exporter or Embedder.

*) Wordpress Plugin which embeds RDFa into selected theme. If also external semantic metadata exists in an RDF file, the RDFa metadata can simply link to it.

*) Modify Wordpress Press-This component to allow reuse selected content by value and reuse resources by embedding references. If content is reused by value the Press-This component should expose from which resource (not page!) the content originates from. If the content is reused by reference the Press-This components embeds the URI of the external resource to the Post content and marks it via a sioc:embeds attribute.

*) Wordpress Plugin (simple Filter) which allows to reuse embedded resources by reference. Whenever a sioc:embeds RDFa attribute is found inside the content of a posting, the description of the posting is fetched and at least the content of the external post is displayed.