Both cool and interesting. Andrea, does your Solr RDF indexing project support inference? If so, is inference done by Jena or ahead of time before indexing by Solr?
-----Original Message----- From: Andrea Gazzarini [mailto:a.gazzar...@gmail.com] Sent: Tuesday, April 28, 2015 7:31 AM To: solr-user@lucene.apache.org Subject: Re: Solr + RDF = SolRDF Hi Charlie, definitely cool and interesting. Best, Andrea On 04/28/2015 10:20 AM, Charlie Hull wrote: > On 27/04/2015 21:41, Andrea Gazzarini wrote: >> Hi guys, >> I'd like to share with you a project (actually a hobby for me) where >> I'm spending my free time, maybe someone could get some idea or >> benefit from it. >> >> https://github.com/agazzarini/SolRDF >> >> I called it SolRDF (Solr + RDF): It is a set of Solr extensions for >> managing (indexing and querying) RDF data. >> >> As a first step I wrote a set of classes for injecting Apache Jena >> RDF cababilities in Solr. > > Hi Andrea, > > Interesting...we've been working with Jena and SPARQL queries as part > of our BioSolr project: we presented on this in London last week > (includes links to slides and code): > http://www.flax.co.uk/blog/2015/04/24/lucenesolr-london-meetup-biosolr > -and-query-deep-dive/ > > Cheers > > Charlie > > >> >> That allows to >> >> - index RDF data using one of the standard formats (n-triples, >> rdf+xml, >> turtle) >> - query those data using SPARQL, the RDF query language >> >> Trying all of that is just a matter of two minutes, as illustrated in >> this post [1]. Follow those five steps and Solr will quickly act as a >> fully compliant SPARQL 1.1 endpoint. >> >> On top of that, I'm going further with the development of what I >> called "Hybrid mode", where Solr capabilities, like faceting, can be >> applied to an RDF Dataset queried using SPARQL. You can read more >> about this in this post [2] or in the project Wiki [3]. Two kinds of >> facets (object and range object faceting) are already working and >> available in the master; I'd like to integrate pivot and interval >> facets, too. >> >> As I said this is just an amusement for me (and a great chance to >> explore how Solr works behind the scenes) so I'm gradually and slowly >> going ahead, making available only "stable" features. >> >> Any feedback / idea / comment / question is warmly welcome ;) >> >> Best, >> >> Andrea >> >> [1] >> http://andreagazzarini.blogspot.it/2014/12/a-solr-rdf-store-and-sparq >> l-endpoint-in.html >> >> >> [2] >> http://andreagazzarini.blogspot.it/2015/04/rdf-faceting-with-apache-s >> olr-solrdf.html >> >> >> [3] https://github.com/agazzarini/SolRDF/wiki/Faceted%20search >> > >
