Re: "Microsoft Access" for RDF?

On 2/19/15 4:52 AM, Michael Brunnbauer wrote:
> Hello Paul,
>
> an interesting aspect of such a system is the ordering of triples - even
> if you restrict editing to one subject. Either the order is predefined and the
> user will have to search for his new triple after doing an insert or the user
> determines the position of his new triple.
>
> In the latter case, the app developer will want to use something like
> reification - at least internally. This is the point when the app developer
> and the Semantic Web expert start to disagree ;-)

Not really, in regards to "Semantic Web expert starting to disagree" per 
se. You can order by Predicate or use Reification.

When designing our RDF Editor, we took the route of breaking things down 
as follows:

Book (Named Graph Collection e.g. in a Quad Store or service that 
understands LDP Containers etc..)  --> (contains) --> Pages (Named 
Graphs) -- Paragraphs (RDF Sentence/Statement Collections).

The Sentence/Statement Collections are the key item, you are honing 
into, and yes, it boils down to:

1. Grouping sentences/statements by predicate per named graph to create 
a paragraph
2. Grouping sentences by way of reification where each sentence is 
identified and described per named graph.

Rather that pit one approach against the other, we simply adopted both, 
as options.

Anyway, you raise a very important point that's generally overlooked. 
Ignoring this fundamental point is a shortcut to hell for any editor 
that's to be used in a multi-user setup, as you clearly understand :)


Kingsley

>
> Maybe they can compromise on a system with a separate named graph per triple
> (BTW what is the status of blank nodes shared between named graphs?).
>
> Regards,
>
> Michael Brunnbauer
>
> On Wed, Feb 18, 2015 at 03:08:33PM -0500, Paul Houle wrote:
>> I am looking at some cases where I have databases that are similar to
>> Dbpedia and Freebase in character,  sometimes that big (ok,  those
>> particular databases),   sometimes smaller.  Right now there are no blank
>> nodes,  perhaps there are things like the "compound value types" from
>> Freebase which are sorta like blank nodes but they have names,
>>
>> Sometimes I want to manually edit a few records.  Perhaps I want to delete
>> a triple or add a few triples (possibly introducing a new subject.)
>>
>> It seems to me there could be some kind of system which points at a SPARQL
>> protocol endpoint (so I can keep my data in my favorite triple store) and
>> given an RDFS or OWL schema,  automatically generates the forms so I can
>> easily edit the data.
>>
>> Is there something out there?
>>
>> -- 
>> Paul Houle
>> Expert on Freebase, DBpedia, Hadoop and RDF
>> (607) 539 6254    paul.houle on Skype   ontology2@gmail.com
>> http://legalentityidentifier.info/lei/lookup


-- 
Regards,

Kingsley Idehen	
Founder & CEO
OpenLink Software
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