Indexing arbitrary RDF resources

[re...@gmx.net]

Hey, all!

I'm planning a project where I want to write software that takes an RDF class and uses that information to dynamically support indexing and faceted searching of resources of that type. This would (as I imagine it) function with dynamic fields in all required data types and multiplicities and a mapping from properties to field names.
The project will be part of the open CMS software drupal which already has a working Solr integration module. You can find details about my project idea here:
http://groups.drupal.org/node/20589

Has something like this already been done or thought of by anyone her? Does anyone here have hints or remarks regarding the idea?

Thanks in advance for any comments!
-- 
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Re: Indexing arbitrary RDF resources

[Renaud Delbru <re...@deri.org>]

Hi,

Here in DERI [1], we are working on an extension for Lucene / Solr to 
handle RDF data and structured queries. The engine is currently in use 
in the Sindice [2] search engine. We are planning to release our 
extension, called SIREn (for Semantic Information Retrieval Engine), as 
open source in the following month.

The approach with dynamic fields could work, but it has strong 
limitations when dealing with a large number of fields. Among them, it 
will lead to data duplication in the dictionary (the dictionary will 
become quickly very large since multiple fields / predicate can have 
identical terms) and it will be very inefficient to ask queries across 
all the fields. Our work overcomes such problems. We are also currently 
working on supporting join queries among entities / documents that are 
not of the most simple kind.

If you want to know more, you can contact our team (or send me directly 
an email). Maybe, it could be a good idea to join our efforts.

[1] http://www.deri.ie/
[2] http://www.sindice.com/
-- 
Regards,
Renaud Delbru

remus@gmx.net wrote:
> Hey, all!
>
> I'm planning a project where I want to write software that takes an RDF class and uses that information to dynamically support indexing and faceted searching of resources of that type. This would (as I imagine it) function with dynamic fields in all required data types and multiplicities and a mapping from properties to field names.
> The project will be part of the open CMS software drupal which already has a working Solr integration module. You can find details about my project idea here:
> http://groups.drupal.org/node/20589
>
> Has something like this already been done or thought of by anyone her? Does anyone here have hints or remarks regarding the idea?
>
> Thanks in advance for any comments!
>