W3C home > Mailing lists > Public > semantic-web@w3.org > August 2011

Re: ANN: Sparallax! - Browse sets of things together (now those on your SPARQL endpoint)

From: Giovanni Tummarello <giovanni.tummarello@deri.org>
Date: Thu, 18 Aug 2011 01:37:30 +0100
Message-ID: <CAHHRs7hUs3gS_gWTAXCaem4=0ga+tRQjBrn2qGiaqAUJ8Mukfw@mail.gmail.com>
To: Danny Ayers <danny.ayers@gmail.com>
Cc: Semantic Web at W3C <semantic-web@w3.org>, Linking Open Data <public-lod@w3.org>, Andy Seaborne <andy.seaborne@gmail.com>
Hi Danny,

i liked sparallax a lot, problem is its hard to maintain. David didnt
upgrade parallax any longer and the intern who did the "sparql to MQL"
conversion that allows sparallax to operate on sparql is now not
working with us anymore. Hard to say how difficult it would be to
progress on that project

On the other hand in terms of browser i am going to be sponsoring
development of TFacets , which is pretty good IMO, so we might be
releasing a new version in a few months together with the original
developer of course. What do you think of that?


On Thu, Aug 18, 2011 at 12:03 AM, Danny Ayers <danny.ayers@gmail.com> wrote:
> Nice work!
>> Due to requirements of query functionalities and aggregates, Sparallax
>> currently only works on Virtuoso SPARQL endpoints. (do other
>> triplestores have aggregates? if so please let us know and we'll try
>> to support other syntaxes as well)
> Which aggregate functions are needed?
> ARQ has some support (very possibly more than) listed here:
> http://jena.sourceforge.net/ARQ/group-by.html
> [Andy, are there any more query examples around? I can't seem to get
> count(*) working here]
> I see there are Graph and Dataset fields on the form - how are they
> used? What happens with an endpoint that only has a default, unnamed
> graph?
>> Try sparallax on our test datasets or put just the URL of your SPARQL
>> endpoint (but make sure you have materialized your RDFs triples, it's
>> needed)
> materialized?
> (I assume that's not the httpRange-14 extension for dogs :)
> What else can be done to the data to make it more Sparallax friendly?
> I noticed clues in the form boxes for abstractprop and imageprop, also
> the config file -
> http://code.google.com/p/freebase-parallax/source/browse/app-parallax/sparallax/scripts/config.xml
> Do I take it from the rdfs:Class entry there that it uses RDFS to
> decide on collections?
> Sorry for the raft of questions, but I recently put LD browser on my
> todo list, completely forgetting about Parallax and all the boxes that
> already ticks, and now Sparallax... so I want to get an idea of how it
> works to avoid reinventing the wheel (in a square shape).
> Cheers,
> Danny.
> --
> http://dannyayers.com
Received on Thursday, 18 August 2011 00:38:21 UTC

This archive was generated by hypermail 2.4.0 : Tuesday, 5 July 2022 08:45:25 UTC