W3C home > Mailing lists > Public > public-lod@w3.org > April 2009

Re: "humane" query editors for the data web?

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Wed, 22 Apr 2009 22:24:45 -0400
Message-ID: <49EFD16D.3070501@openlinksw.com>
To: David Huynh <dfhuynh@alum.mit.edu>
CC: public-lod@w3.org
David Huynh wrote:
> Kingsley,
>
> Thanks for the resources and the detailed explanation! Looks like all 
> the pieces are there!
Yes, and if you could be enticed into a generic UI for SPARQL QBE that 
applies to the Linked Data Web even better :-)
Of course, Freebase are Linked Data friendly, so even more of the pieces 
are in place :-)

Kingsley
>
> David
>
> Kingsley Idehen wrote:
>> David Huynh wrote:
>>> Thanks for the link, Juan.
>>>
>>> Just curious, even if I know SPARQL, how do I (as a new user) know 
>>> which properties and types there are in the data? And what URIs to 
>>> use for what?
>> David,
>>
>> Not speaking for Jaun, but seeking to answer the question you posed.
>>
>> Our iSPARQL interface takes the view that:
>>
>> 1. You lookup vocabularies and ontologies of interest before 
>> constructing triple patterns since the terms need to come from somewhere
>> 2. You then you use the ontology/vocabulary tree to drag and drop 
>> classes over Subject  and Object nodes
>> 3. Do the same thing re. properties by selecting them and dropping 
>> them over the connectors (predicates)
>> 4. Repeat the above until you've completely painted an SPO graph of 
>> what you seek.
>>
>> BTW - the pattern in steps 2-4 above originated from RDF Author, and 
>> we simply adopted it for SPARQL (following a skype session I had with 
>> Danbri years ago re. the need for SPARQL QBE). Note: RDF Author 
>> allowed you to write Triples directly into RDF information resources 
>> via their URLs. Which means the same UI works fine for SPARUL 
>> (writing to Quad Store via its internal Graph IRI or Web Information 
>> Resource URL).
>>
>> Links:
>>
>> 1.  http://rdfweb.org/people/damian/RDFAuthor/Tutorial/ -- RDF Author
>>
>> Kingsley
>>>
>>> David
>>>
>>> Juan Sequeda wrote:
>>>> You may want to check out a tool that we are working on: SQUIN
>>>>
>>>> http://squin.informatik.hu-berlin.de/SQUIN/
>>>>
>>>> Juan Sequeda, Ph.D Student
>>>> Dept. of Computer Sciences
>>>> The University of Texas at Austin
>>>> www.juansequeda.com <http://www.juansequeda.com>
>>>> www.semanticwebaustin.org <http://www.semanticwebaustin.org>
>>>>
>>>>
>>>> On Wed, Apr 22, 2009 at 9:18 PM, David Huynh <dfhuynh@alum.mit.edu 
>>>> <mailto:dfhuynh@alum.mit.edu>> wrote:
>>>>
>>>>     Hi all,
>>>>
>>>>     Admittedly this is somewhat of a tease and shameless
>>>>     self-promotion :-) but I think there are a few interesting
>>>>     concepts in the query editor for Freebase that I've been working
>>>>     on that can be very useful for querying and consuming LOD data 
>>>> sets:
>>>>
>>>>       http://www.freebase.com/app/queryeditor/about
>>>>
>>>>     Or maybe I missed it totally--is there anything similar for
>>>>     writing SPARQL queries over LOD?
>>>>
>>>>     Cheers,
>>>>
>>>>     David
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>
>


-- 


Regards,

Kingsley Idehen	      Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO 
OpenLink Software     Web: http://www.openlinksw.com
Received on Thursday, 23 April 2009 02:25:24 UTC

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