OWL ART Language Search
This extension of the OWL ART library allows for free-text indexing and search over RDF repositories accessed through the OWL ART API. The approach is not based on a full indexing of all RDF, and relies instead on the creation of (a number of) dedicated indexes through convenience methods. While this approach surely lacks of the generality of a full indexed RDF repository the index of which can (for instance) serve a SPARQL endpoint, surely it provides an easy support for the realization of fast-performing dedicated indexes, where arbitrarily extracted list of rdf resources can be associated via a direct link to the values of desired properties (even a few hops away in the RDF graph) which are then indexed. The advantage is clear: no need to realize full repository indexing if the desired target is much smaller, and no need to perform complex SPARQL queries by linking concepts with thei lexicalizations which are a few hops away (as for the case of skos extension for labels: skos-xl, where labels are reified and are a medium between the concepts they're connected to and their literal form)