A new QuadStore which combines the best of two worlds (Lucene/Fulltext search engines & TripleStores/RDF/SPARQL) is out and can be evaluated online.

TuQs offers the following feature:

• SAIL accessible
• True QuadStore with GraphSupport
• HighSpeed regex SPARQL filters
• Userrights on TripleBasis
• Extendable to a QuintStore (or more generally to an n-Store)
• Cachable SPARQL Queries for further speed improvement
• Clusterable
• Federationable
• FullTextSearchable

Some queries are really complex and high-speed, e.g.:

SELECT ?s ?o
WHERE {
?s <http://www.w3.org/2004/02/skos/core#definition> ?o .
?o <http://www.turnguard.com/tuqs/function#BooleanTerm> ‘Computer AND (java* OR HTML)’
}

The best starting point to find out, what´s the speciality of TuQS is here: Just click the sample queries on the right side and see how fast they perform even on very simple hardware.

Next steps: The developer of TuQS, Jürgen Jakobitsch (aka Turnguard), is currently working on SAIL inferencing.

Michael Hausenblas & Chris Bizer

ESWC 2009 is not over yet – but I am happy to announce: The Semantic Web Community is more alive than ever before! We had four days of brilliant talks, vibrant meetings, and great atmosphere so far. Some highlights:

• Chris Bizer presentation of Berlin SPARQL Benchmark (BSBM) or Enrico Minacks´s talk about benchmarking RDF stores showed that base technologies of the semantic web are mature enough for real-world applications.
• Use cases from many domains like biodiversity, astronomy or multi-media showed clearly the trend that the semantic web becomes “ubiquitous” and has left the labs.
• The idea of Linking (Open) Data became pre-dominant in the community, many projects are built around this infrastructure already. But there is a clear demand for improved ontology matching or brokering services like the recently released <sameAs>
• Martin Hepp´s lightning talk about “What makes for a good ontology?” and emotional reactions from the audience on that showed, that grass-root approaches and top-down approaches for ontology building still haven´t grown together, but they are getting closer
• Weather and food here in Crete is great!