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Re: From embedded structured data to queryable websites

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 27 Jan 2017 16:10:09 -0500
To: public-lod@w3.org
Message-ID: <b482895f-8325-5a4a-adf2-cd44d2149093@openlinksw.com>
On 1/27/17 12:08 PM, Ruben Verborgh wrote:
> Hi Kingsley,
>> That is too broad a claim to make.
> You're right, I should've been more exact.
> I use the word "queryable" in the wrong way;
> everything is queryable, sometimes with zero results.

Yes, that's true .

> With the statement
>>> I have provided one simple way for my own website
>>> to make itself queryable, i.e., a TPF interface instead of LD documents.
> I mean the following:
> If one wants to evaluate a SPARQL query
> with full completeness with respect to all data on a given website,
> then LD documents cannot provide that for all SPARQL queries.

Yes, but I don't believe folks have that assumption about RDF documents
published in accordance with Linked Data principles.

Linked Data docs are the basis for creating Data Webs that come in
various shapes, sizes, and forms. Thus, what can be achieved is quite
diverse, in line with equally diverse needs.

> This requires different interfaces,
> such as a data dump, SPARQL endpoint, TPF interface, 

Maybe, but as per  my comments above, that isn't the focal point. 

I understand that a lot of commentary has swirled around large dataset
publication for years, but I wouldn't use that to define this space. It
just so happens that data has to be in place for client activity to

> For an example of completeness differences, see:
> https://ruben.verborgh.org/articles/queryable-research-data/#queries
>> You can build applications today that use Web Pages as structured data sources.
> Yes, but only those that crawl all pages
> will be able to guarantee full completeness
> with regard to the entire website.

You can't query the entire web, and I really don't think that's been the
goal of SPARQL, Linked Data, and the LOD Cloud. There are going to be
lots of smart clients working with chunks of Linked Data is very
intelligent ways, courtesy of SPARQL and the principles behind web-like
structured data representation (a/k/a Linked Data).

For instance, I see the LOD Cloud more like an Electric Grid that
facilitates the flow of electricity (Data) :)


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Received on Friday, 27 January 2017 21:10:37 UTC

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