Tuning SPARQL Queries for Performance

There is often a perception that RDF/SPARQL based systems are not performant compared to traditional RDBMS based systems. Personally, I think this is a spurious and inaccurate portrayal of the technology for a couple of reasons: 1. Often people ... [ Read More ]

Extending SPARQL with CONSTRUCT Sub-queries

Recently myself and some of my colleagues were discussing something that we consider a key limitation of SPARQL right now which is that is provides no direct mechanism to create a temporary graph from the existing data to use in your query. Yes, you ... [ Read More ]

Hitting the Moving Target

The W3C [1] is a fantastic organization that has done more than any organization to help promote standards and interoperability on the web. It is also the body responsible for many of the core standards that our uRiKA system utilizes such as RDF [2] ... [ Read More ]

Practical SPARQL Benchmarking

There is a certain amount of misguided belief in the market that Semantic Web technologies simply aren't performant enough for the needs of a business and I often hear this presented as a reason for not choosing these technologies over a traditional ... [ Read More ]