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Re: predicates as verbs

From: Jakub Kotowski <jakubkotowski@gmx.net>
Date: Thu, 01 Jul 2010 18:07:17 +0200
Message-ID: <4C2CBD35.9030403@gmx.net>
To: paoladimaio10@googlemail.com
CC: Henry Story <henry.story@gmail.com>, semantic-web at W3C <semantic-web@w3c.org>
Dear Paola,

Paola Di Maio schrieb:
> 
> relations need to be verbs if you want the data model to be sound in an
> economical way
> and possibly within my lifetime
> 
No, this is obviously  just a kind of best practice to help people, to
guide them and to make the intended meaning more accessible, as Henry
mentioned. It has nothing to do with the specification of RDF as a
formal knowledge representation famework.

Regards,
Jakub

> 
> of course, everything else is possible too, you ll just have to find the
> time to make it work
> 
> let me know when you do?
> 
> 
> P
> 
> 
> 
> 
> 
> 
> On Thu, Jul 1, 2010 at 4:21 PM, Henry Story <henry.story@gmail.com
> <mailto:henry.story@gmail.com>> wrote:
> 
>     relations need not be verbs at all. Eg: +
> 
>     (2 2) plus 4.
> 
>     Rules such as the one you mention are just useful guides to help
>     people get going.
>     Verbs are actions and actions are events, and events can also be named
> 
>     2010Olymbpics contains springing20234 . spinging20234 speed 24s .
> 
>     or something like that.
> 
>     Henry
> 
>     On 1 Jul 2010, at 17:13, Paola Di Maio wrote:
> 
>     > I am not following close enough the discussion on subjects as
>     literals , and
>     > whtere they contribute
>     > to the awkwardness of RDF
>     >
>     > One thing I remember finding it disorienting though, is that there
>     is no
>     > rule that a predicate must be a verb
>     > (when I was looking at triple as if it were a subject- predicate-
>     object
>     > model )
>     >
>     > In standard modelling practices  (E/R modeling) the relations tend
>     to be
>     > verbs
>     >
>     >
>     > CF PAGE 196
>     >
>     http://books.google.co.uk/books?id=1ftCwG4K-HEC&lpg=PA196&ots=FBX42Ms9Ys&dq=ENTITY%20RELATIONSHIP%20MODEL%20SENTENCE%20VERB%20RULE&pg=PA196#v=onepage&q&f=false
>     <http://books.google.co.uk/books?id=1ftCwG4K-HEC&lpg=PA196&ots=FBX42Ms9Ys&dq=ENTITY%20RELATIONSHIP%20MODEL%20SENTENCE%20VERB%20RULE&pg=PA196#v=onepage&q&f=false>
>     >
>     > I did bring this up on another list, and the engineers thought it
>     would be
>     > good practice to
>     > restrict predicates to verbs for obvious reasons (obvious to
>     anyone who does
>     > data models)
>     >
>     > Not sure how that would play if RDF is shown as  EAV (entity attribute
>     > value) rather thant SPO (subject predicate object)
>     >
>     > Just thought I d mention this, in case someone wants to fix RDF
>     thats the
>     > first crack I spottend a while back
>     >
>     > cheers
>     > PDM
> 
> 
Received on Thursday, 1 July 2010 16:08:55 UTC

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