Comparison of RDF Query Languages.

The purpose of this paper is to provide a rigorous comparison
of six query languages for RDF. We outline and categorize features
that any RDF query language should provide and compare the individual
languages along these features. We describe several practical usage
examples for RDF queries and conclude with a comparison of the expressiveness
of the particular query languages. The usecases, sample data and
queries for the respective languages are available on the web.

More on: http://www.aifb.uni-karlsruhe.de/WBS/pha/rdf-query/rdfquery.pdf#search=%22RDF%20query%20language%20comparison%22

http://www.aifb.uni-karlsruhe.de/WBS/pha/rdf-query/