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Archiv für die Kategorie 'DSSN'

Planet Federated Social Web Launched

July 5, 2011 - 9:44 am by Sebastian Tramp - No comments »

Because we all like Planet RDF and the Federated Social Web Community does not have such a service at the moment, we’ve recently launched Planet Federated Social Web as a community service for the W3C Federated Social Web Incubator Group at http://planet-fsw.lod2.eu.

We are working since several years on applications and protocols for distributed social networking based on semantic technologies, so we are excited to contribute to this working group.

Planet FSW is a merge of all the latest Federated Social Web related activities fetched from personal and project blogs as well as from twitter feeds. It is supported by the LOD2 project and driven by Foafpress (a small linked data / FOAF presentation engine which was created by our associated partner / former student Michael Haschke).

Update: Thanks to Evan‘s fast response, Planet FSW is now available at the more official domain planet.federatedsocialweb.org.

OntoWiki 0.9.5 Available

June 14, 2010 - 4:55 pm by Sebastian Tramp - One comment »

The AKSW research group is pleased to announce that OntoWiki 0.9.5 is now available for download.

OntoWiki is a web-application enabling the collaborative creation and (linked data) publication of RDF knowledge bases.

More information about OntoWiki can be found at http://ontowiki.net. You can download OntoWiki in our google code file section.

Enhancements in this release include:

  • Support for Semantic Pingback, a protocol which enables OntoWiki to communicate named links from linked data resources or blog systems like WordPress.
  • Support for the publication of provenance information via Linked Data.
  • A new navigation module which support the configuration and usage of arbitrary navigation hierarchies (e.g. based on classes, SKOS elements, geospatial entities or FOAF groups).
  • A bookmarklet for collecting RDFa-based information into a specific OntoWiki knowledge base.
  • More editing widgets, e.g. for phone number and mailto: resources.
  • A new mapping module for the resource visualisation and filtering based on maps.
  • Attribute / Tag clouds based on selected RDF properties.
  • A GUI for complex SPARQL filter (contains, larger, smaller, between and bound)
  • A JSON/RPC server as an additional interface (e.g. for the command line client)
  • A plugin to create nice URIs based on the content of a new resource.

A detailed log of the over 200 enhancements and bug fixes of this release is available at our issue tracker.

Many thanks to the contributors of this OntoWiki release (in alphabetical order): Atanas Alexandrov, Christian Maier, Christoph Riess, Jonas Brekle, Marvin Frommhold, Michael Haschke, Michael Martin, Michael Niederstätter, Natanael Arndt, Norman Heino, Philipp Frischmuth and Tim Ermilov

best regards

Sebastian Tramp

Semantic Pingback

March 10, 2010 - 8:35 pm by Sebastian Tramp - No comments »

This is an announcement of the technical report as well as three different implementations of Semantic Pingback.

Semantic Pingback tackles the quality, timeliness and coherence as well as direct end user benefits of the emerging Linked Data Web. Semantic Pingback extends the well-known Pingback method, which is a technological cornerstone of the blogosphere.

It is based on the advertising of an RPC service for propagating typed RDF links between Data Web resources. It is downwards compatible with conventional Pingback implementations, thus allowing to connect and interlink resources on the Social Web with resources on the Data Web.

We implemented the Semantic Pingback mechanism in three different scenarios:

  • A Semantic Pingback server and client plugin for OntoWiki
  • A Semantic Pingback server integrated in Triplify, thus supporting the interlinking with relational data on the Data Web.
  • A standalone Semantic Pingback server was implemented in PHP, that can be utilized with arbitrary resources that do not provide a Pingback service themselves.

If you do not want to provide a Pingback service on your own, you can use the AKSW Semantic Pingback Service which notifies you via email.

Triplify 0.8 Released

March 5, 2010 - 3:43 pm by Philipp Frischmuth - No comments »

We just released version 0.8 of the Triplify script, which includes the following feature enhancements and fixes:

  • Triplify now supports the Semantic Pingback mechanism: It exposes a X-Pingback HTTP header field, it contains a XML-RPC service (also usable by conventional Pingback clients) and it exports Pingback statements along with the instance data.
  • Fix: The cache ID is now generated using the server name, port and request URI.
  • Fix: We added a 404 Resource not Found error message.
  • Fix: We added a config option to disable the use of mod_rewrite (for cases, where the module is available, but not configured).
  • Fix: Removed hard-coded MySQL settings to allow e.g. PostgreSQL servers (#2899948)
  • Fix: Duplicate triples in some cases (#2833620)
  • Fix: 404 when URI with query was requested (e.g. json output, #2631600)

The new features are documented on triplify.org.

Thanks to everybody contributing bug fixes or comments and code (especially Eric Feliksik).

xOperator Masters Thesis completed

March 12, 2009 - 9:23 pm by JoergUnbehauen - One comment »

Finally my Masters Thesis covering our xOperator project is finished and can be viewed here. The thesis covers the whole creation and implementation process and thus adds some Software Engineering to the ideas presented at ESWC08 and ISWC08.  I’ll happily continue my studies here at AKSW as a Ph.D. student. Thanks again for your help, Sebastian Hellmann and Sebastian Dietzold!