W3C home > Mailing lists > Public > www-rdf-interest@w3.org > January 2001

Re: Dropping the redundant colon in N3

From: Sean B. Palmer <sean@mysterylights.com>
Date: Wed, 31 Jan 2001 21:24:04 -0000
Message-ID: <004301c08bcc$276b3320$403c073e@z5n9x1>
To: "Seth Russell" <seth@robustai.net>, "Tim Berners-Lee" <timbl@w3.org>
Cc: <jos.deroo.jd@belgium.agfa.com>, <www-rdf-interest@w3.org>, <champin@bat710.univ-lyon1.fr>
> define a subClass of URI and call them ProperNamespaceUri
> all of which end with #.

I note that if you use "bind" (still allowed in N3, but deprecated), it
automatically appends a # to a namespace URI. However, I think that is a
very bad idea, because not all namespaces end in a # (i.e. have the
properties contained as FragID's within them). For example Dublin Core uses
a "/", and a GET form could use an "=".

> Also I note that your <...> construct in N3 cannot be easily nested
inside of
> XML .. which i take as a real drag.

So do I, but you can't simply remove it because http: would be interpreted
as a namespace alias! There needs to be something there that says "this is
a URI". From the spec., it looks as though Tim considered an apostrophe,
and then DanC suggested <URI>. Also from the "specification":-

     Actually it is cool to use inverse <. for stings >this is a string<
     because then you end up being able to make pages which
     look like markup and which are functions in notation3.

That's quite an odd idea, don't you think? Using < and > to delimit
strings? I converted a bit of N3 to that, and it didn't look like any SGML
I'd ever seen before...

Kindest Regards,
Sean B. Palmer
@prefix : <http://webns.net/roughterms/> .
[ :name "Sean B. Palmer" ] :hasHomepage <http://infomesh.net/sbp/> .
# or maybe:-
<@prefix : 'http://webns.net/roughterms/ .
[ :name >Sean B. Palmer< ] :hasHomepage 'http://infomesh.net/sbp/ .>
Received on Wednesday, 31 January 2001 16:25:32 UTC

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