W3C home > Mailing lists > Public > public-lod@w3.org > January 2017

Re: making our HTML+RDFa queryable

From: Ruben Verborgh <Ruben.Verborgh@UGent.be>
Date: Tue, 24 Jan 2017 16:22:42 +0000
To: Kingsley Idehen <kidehen@openlinksw.com>
CC: "public-lod@w3.org" <public-lod@w3.org>
Message-ID: <6329F12A-F62F-48C2-9B24-D474C2DCC6CD@ugent.be>
>> That's indeed a pressing issue:
>> who is able to query our data?
> 
> Our data or data published using Linked Data principles? 

Both.

> Linked Data is already everywhere

Sure, and the big crawlers can query it.
Now the question is: can we?

> More people will always publish using a variety of document types. Thus, in keeping with RDF's abstract nature, we should embrace RDF document type heterogeneity with regards to Linked Data (publication and consumption). 

+1, and also heterogeneity in vocabs etc.

But embracing that heterogeneity is hardest for consumers.
It's easy for anyone to publish whatever they want;
it's harder for consumers to make sense of that in a uniform way.

Heterogeneity goes against
Be liberal in what you accept,
but conservative in what you publish.
And that's fine with me, I like heterogeneity
and we will always have it on the Web.
But it also means we need solutions for consumers,
such as the pipeline I propose (which is only one possible small step).

>> we can query across multiple pages easily.
> 
> Yes, because humans or machine can follow links. 

Links following is great,
but that alone won't cut it because of unidirectionality.
So if we don't want to please just the harvesters,
we need to do more.

>> Linked Data is a good start,
>> but cannot offer completeness for SPARQL queries.
> 
> SPARQL query services can follow links, and they can do that very intelligently too!

Certainly, but are limits:
https://ruben.verborgh.org/articles/queryable-research-data/#queries

Best,

Ruben
Received on Tuesday, 24 January 2017 16:23:16 UTC

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