McGibbney, Lewis John wrote:
OK Thank you for pointing out this information.
My work with Solr is not formally associated with the project, it is merely part of my ongoing research and is very much in production.
Very much in development or is it used in production systems?
Paolo
> To give you an indication I provide the link below which shows a previous
effort, this was used to provide query refinement based on data stored in a
Lucene index (which is now removed from the Nutch project as indexing and search
has been delegated to Solr)
http://wiki.apache.org/nutch/OntologyPlugin
When I have something more stable I will gladly get in touch and make the code
available for everyone.
Lewis
________________________________________
From: Paolo Castagna [[email protected]]
Sent: 17 March 2011 08:14
To: [email protected]
Subject: Re: ARQ + Lucene
McGibbney, Lewis John wrote:
Hi Paolo,
First and foremost I apologise upfront for talking off-subject here in regards
to Jena in specific.
I am currently working on a plug-in for Solr which refines user queries based
on ontology classes and I am using Jena to wrap around my ontology models to
provide this functionality.
Immediately I am interested in experimenting with LARQ and SARQ.
Out of curiosity, can you please provide some use case or personal usage for
these frameworks as it would enable me to get at least an abstract sense of how
I may be able to use LARQ,
prior to SARQ for my own needs.
The use cases for SARQ or EARQ are exactly the same as the ones for LARQ (since
they
implement exactly same functionalities but with a different indexing solution
behind).
One use case could be: you want to quickly find, for example, all the "things"
which
have the word "nuclear energy" in any of their literals.
Other RDF stores implement similar functionalities, see:
http://www.w3.org/wiki/SPARQL/Extensions/Computed_Properties
This is just pure and plain vanilla free text searches: given some keywords,
you retrieve
a ranked list of the first X literals containing those keywords/words. It's not
what some
call "semantic search", no ontologies are involved, no NLP, etc.
Can you point me at the Solr plug-in you are working on?
Thanks,
Paolo
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