Hi Daniel,
no, unfortunately not...it is definitely one of the interesting
challenges of this "wedding": inference in responses or crazy things
like "inferential faceting".
It's all in the "grocery" list :) but I never thought about the concrete
implementation. Thanks for your suggestions.
Best,
Andrea
On 04/28/2015 04:26 PM, Davis, Daniel (NIH/NLM) [C] wrote:
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
