Announcing OpenLink Virtuoso, Open-Source Edition, v5.0.8

OpenLink Software is pleased to announce a new release of Virtuoso, Open-Source Edition, version 5.0.8.

This version focuses on performance optimizations and speed

* SQL compiler is now re-entrant
* Self-Join optimizations exposed at JDBC Driver level (as was already the case with ODBC)
* SPARQL engine and SPARQL-BI extension optimizations have been merged
* TriG serialization format for RDF is now supported alongside RDFa, N3, Turtle, and RDF/XML
* Additional Sponger Cartridges for Digg, FriendFeed, and CrunchBase
* Improved graph quality and fidelity from existing Cartridges (especially Freebase, eBay, Amazon, Google, Yahoo, and many others)
* Improved handling of and bug fixes relating to the `OPTIONAL' SPARQL keyword
* Self-Dereferencing fixes (e.g., Sponger was not properly dereferencing its own Proxy URIs)

On the ODS front, the following have been addressed:

* More flexible Mapping service model based on new OAT-based Mapping Control (which also includes a "province" locator)
* Improved SyncML integration with Briefcase folders
* Gem URL fixes for Atom, RSS, and RDF feeds

For more details, see the release notes:

Other links:

Virtuoso Open Source Edition:
Home Page:
Download Page:

OpenLink Data Spaces:
Home Page:
SPARQL Usage Examples (re. SIOC, FOAF, AtomOWL, SKOS):

OpenLink AJAX Toolkit (OAT):
Project Page:
Live Demonstration:
Interactive SPARQL Demo:

OpenLink Data Explorer (Firefox extension for RDF browsing):
Home Page:

Posted by Tim Haynes 2008-08-28

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