Re: ISSUE-7 (linked-data): Linked Data aspects for mapping RDB2RDF [R2RML]

Harry,


> While this does not address all Linked Identifiers, my proposal allows R2RML
> to at least re-use the results from search engines.

This is a simple and effective proposal and I appreciate it. But one major
issue remains, and before we go down this route I'd like to see some
clarification on how you plan to address this.

Note: my experience is of practical nature with systems like Dbpedia lookup
or the Uberblic API and not so much of theoretical background as obviously
Harry has.

As long as the thing you're looking up is unambiguous, no problem. However,
what if the query (and here comes the old example again, sorry ;) looks as
follows:

 http://www.example.com/r2rml?string=Paris

Now, do you mean the capitol of France? Or maybe a more or less well-known
D-class celeb and offspring of the Hilton clan?

 http://www.example.com/r2rml?string=Paris&results=3

... would, btw, make no big difference, the burden is still on the end-user
to figure out which is the 'right' entity.

Thoughts?

Cheers,
      Michael

-- 
Dr. Michael Hausenblas, Research Fellow
LiDRC - Linked Data Research Centre
DERI - Digital Enterprise Research Institute
NUIG - National University of Ireland, Galway
Ireland, Europe
Tel. +353 91 495730
http://linkeddata.deri.ie/
http://sw-app.org/about.html



> From: Harry Halpin <hhalpin@w3.org>
> Date: Tue, 18 Jan 2011 16:28:54 -0000 (GMT)
> To: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
> Subject: Re: ISSUE-7 (linked-data): Linked Data aspects for mapping RDB2RDF
> [R2RML]
> Resent-From: RDB2RDF WG <public-rdb2rdf-wg@w3.org>
> Resent-Date: Tue, 18 Jan 2011 16:29:57 +0000
> 
>> 
>> ISSUE-7 (linked-data): Linked Data aspects for mapping RDB2RDF [R2RML]
>> 
>> http://www.w3.org/2001/sw/rdb2rdf/track/issues/7
> 
> While this does not address all Linked Identifiers, my proposal allows R2RML
> to at least re-use the results from search engines.
> 
> http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2010Dec/0026.html
> 
> I have to miss the call as well, but if this goes on the agenda I'd be
> happy to talk about it in detail next call, particularly if it gets some
> review, and would then feel confident in fleshing it out.
> 
>    cheers,
>       harry
> 
> 
>> 
>> Raised by: Michael Hausenblas
>> On product: R2RML
>> 
>> As per our charter [1] "the mapping language MUST allow for a mechanism to
>> create identifiers for database entities. The generation of identifiers
>> should be designed to support the implementation of the linked data
>> principles. Where possible, the language will encourage the reuse of
>> public identifiers for long-lived entities such as persons, corporations
>> and geo-locations."
>> 
>> Further, we have the Wiki page [2] that summarizes the requirements and
>> possible attempts to address this issue as well as the requirement as per
>> our UCR doc [3].
>> 
>> [1] http://www.w3.org/2009/08/rdb2rdf-charter
>> [2] http://www.w3.org/2001/sw/rdb2rdf/wiki/LinkedDataAspects
>> [3] http://www.w3.org/2001/sw/rdb2rdf/use-cases/#GUIDGEN
>> 
>> 
>> 
>> 
> 
>

Received on Tuesday, 18 January 2011 16:40:32 UTC