W3C home > Mailing lists > Public > public-rdf-comments@w3.org > February 2013

Re: Hashes and Turtle

From: Mo McRoberts <Mo.McRoberts@bbc.co.uk>
Date: Sat, 16 Feb 2013 16:41:43 +0000
To: Henry Story <henry.story@bblfish.net>
CC: "public-rdf-comments@w3.org" <public-rdf-comments@w3.org>
Message-ID: <7BE3B7B6-10B6-43A6-9105-4D1AF504169C@bbc.co.uk>
that's covering a somewhat different issue, though — that's principally about ease of writing the URI once you've settled on what sort to use.

while I appreciate that it *is* a consideration, I would sincerely hope that more accessible and friendly tooling over time means it's increasingly only for those of us who insist on hand-crafting triples while the rest of the world moves on…

M.

On Sat 2013-Feb-16, at 16:29, Henry Story <henry.story@bblfish.net>
 wrote:

>
> On 16 Feb 2013, at 16:27, Henry Story <henry.story@bblfish.net> wrote:
>
>>
>> On 16 Feb 2013, at 16:04, Mo McRoberts <Mo.McRoberts@bbc.co.uk> wrote:
>>
>>> As should be blindingly obvious to anybody who's worked with them, hash-based URIs are principally useful where a document describes a _single_ entity within its sphere of reference (though the nature of triples and many ontologies is that there may well be parts of descriptions of other things).
>>>
>>> Ontologies/vocabs are a one solid case where it's really not a good idea to use them because it's hard to split them up into separately-served resources later.
>>
>> I don' think that quite locates the problem at the right place.
>> It would be completely feasible to have one #uri per vocabulary element, each at
>> a different location. For example all of DBPedias resource URIs could just return
>> the content inside so one could have
>>
>>  http://dbpedia.org/resource/Whiskey#x
>>
>> defined by
>>
>>  http://dbpedia.org/resource/Whiskey
>>
>> That would have the advantage of required half the requests on DBPedia to get
>> the information. The only problem I see with that is a syntactic one. I sent
>> this to the WebArch and RDF-Comments group as a mail and RDF group in November,
>> but got no  answer there yet
>>
>> http://lists.w3.org/Archives/Public/public-rdf-comments/2012Nov/0009.html
>>
>> I suppose one would need to propose a solution to the problem.
>> Something allong the lines of requesting a new @prefix in Turtle
>> so that one could write:
>>
>> @pre db: ("http://dbpedia.org/resource/" _ "#x")
>>
>> This would allow one then to have
>>
>> :j :likes db:Whiskey .
>>
>> which would be equivalent to
>>
>> :j :likes <http://dbpedia.org/resource/Whiskey#x> .
>
> So the current turtle spec allows one to write
>
> :j :likes db:Whiskey\#x , db:Organges\#x, db:MashedPotatoes\#x .
>
> But that is pretty awkward, clearly, especially if one
> is teaching it, or writing it out by hand, as one may do
> when writing queries.
>
> Henry
>
> Social Web Architect
> http://bblfish.net/
>

--
Mo McRoberts - Technical Lead - The Space
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Received on Saturday, 16 February 2013 16:42:16 UTC

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