We've released the latest version of dotNetRDF which is 0.1.1 Alpha (Official build number is 0.1.1.18640) today. This release adds many bug fixes and improvements to the library some of which are summarised below:

• General Improvements
  • Many minor bug fixes and optimisations
  • Improved in-memory storage for Nodes and Triples which facilitates the Parser improvements
• Parsing Improvements
  • All parsers are now around 20x faster
  • Added parsers for RDF/JSON and TriG
  • Support for parsing directly from Strings with format auto-detection
• Serialization Improvements
  • All NTriple type writers are around 200x faster
  • Added an additional RDF/XML writers which is around 80x faster (old serializers for this are still quite slow)
  • Added writers for RDF/JSON and TriG
  • Support for writing to any TextWriter rather than just to a StreamWriter
• Storage Improvements
  • Support for Talis Platform
  • Support for Virtuoso Universal Server
  • Revised dotNetRDF Store format offers improved read speeds and improved write speeds in some situations
• ASP.Net Integration
  • Added some SPARQL Handlers allowing for the easy integration of SPARQL Endpoints into websites
  • Added some Resource lookup Handlers allowing for easy integration of linked data publishing into websites

You can go ahead and Download dotNetRDF to get the latest version of the library or Download dotNetRDF Source if you want the latest source code.

We've also now got some useful articles up in the API section which include a new User Guide with various topics guiding you through the use of dotNetRDF.

Tags: 0.1.1, Alpha, Download, Downloads, Release, Releases

I've been busy working on the next release of the Library which I hope to release in the next couple of weeks and have made some major improvements which include the following:

• Parsers now up to 20x Faster
  • Read Speeds of around 8,000 triples/second for RDF/XML up to around 18,000 triples/second for Turtle. Even with a large input size such as a 1 million triple Turtle file created by the Berlin SPARQL Benchmark Test Data generator a speed of around 6,000 triples/seconds is still achieved.
• Improved dotNetRDF Store format gives 10-30x faster write speeds (dependent on threading used) and slight boost to read speeds
  • Read Speeds are around 14,000 triples/second for single threaded read and 25,000 triples/second for multi-threaded read
  • Writes speeds are up to 1,500 triples/second but vary depending on usage

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