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RSS 0.9 backwards semantic compatibility?   Message List  
Reply | Forward Message #1009 of 7450 |
Re: [RSS-DEV] Re: (Motion) rdf:about for channel

Ken MacLeod wrote:
>
> To summarize what I think I've heard said, and put that in to terms I
> think most important for RSS 1.0, then:
>
> * the explicit connection between <link> and rdf:about should be
> undone, so that at some time in the future they can be used
> seperately.
>
> * the only hard requirement, at this time, for rdf:about is that it
> be unique, globally (for items, channels, and might as well be for
> images and textinputs)
>
> * <link>, therefore, need not be unique (as some existing uses have
> shown)
>
> * recommended current practice is to copy <link> (<url>) to rdf:about
> iff it is unique, and otherwise to create a unique URI for
> rdf:about.
>
> * any more specific definition of rdf:about, at this time, is
> unspecified
>
> I believe I've also read that some think channel rdf:about should
> point to the RSS file, and I'd like to give a counter-argument for
> that: I would like to see the channel rdf:about to uniquely identify
> the *channel*, where there might be several versions of RSS, other
> site summary, topic maps, etc. that may also describe that channel.
> As such, there may (to be determined later) be statements that could
> be made about a channel that provide links to these other resources.
>
> "Uniquely identify the channel" (rdf:about) can mean the site URL if
> there's effectively only one channel to the site, a channel URL/URI if
> there's multiple channels to the site, or a virtual or query URI if
> this is a manufactured channel.
>
> Am I close?

I find it a good summary.

Eric

> -- Ken
>
> To unsubscribe from this group, send an email to:
> rss-dev-unsubscribe@egroups.com

--
------------------------------------------------------------------------
Eric van der Vlist Dyomedea http://dyomedea.com
http://xmlfr.org http://4xt.org http://ducotede.com
------------------------------------------------------------------------



Fri Oct 20, 2000 1:26 pm

vdv@...
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Message #1009 of 7450 |
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Hi. Looking at the RSS 0.9 spec [1], I noticed that it doesn't use rdf:about or rdf:ID on any of it's descriptions. Therefore, each RSS 0.9 file is NOT ...
Jason Diamond
jason@...
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Oct 17, 2000
4:28 pm

This issue is more difficult than it seems. We're making RDF assertions, that much is clear. The question then becomes about what. If we make them about items...
Aaron Swartz
aswartz@...
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Oct 17, 2000
11:14 pm

... When we are making assertions about 'items' it is fine to use the URL of the item in the rdf:about, because we are describing a particular Web resource at...
Andy Powell
lisap@...
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Oct 18, 2000
11:09 pm

... Agreed, for 1.0 I believe we should set rdf:about for the channel to "" and look towards a URI representation in a later version. This usage of "" is valid...
Aaron Swartz
aswartz@...
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Oct 19, 2000
8:32 pm

Hi Aaron, ... Yes, I have ;) While I agree that a good practice would be to set this attribute to a URI where you can usually find the channel, I don't think...
Eric van der Vlist
vdv@...
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Oct 19, 2000
9:16 pm

Due to the good points brought up by Eric and Dan (thanks guys!) I'd like to try proposing the opposite: The rdf:about attribute of the channel element is a...
Aaron Swartz
aswartz@...
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Oct 19, 2000
10:44 pm

... I'd much prefer an absolute URI, so that apps can ship the channel data around in text format without having to ship a bunch of 'where I found this'...
Dan Brickley
daniel.brickley@...
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Oct 19, 2000
9:50 pm

... Yes (I think, I'm just rereading the recent articles on this while updating the issues page). I don't recall us concluding that we're breaking the...
Ken MacLeod
ken@...
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Oct 19, 2000
11:03 pm

... I was just re-reading the spec on this point, and things are very unclear. First, the channel element only says "The {resource} URL of the channel ...
Aaron Swartz
aswartz@...
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Oct 19, 2000
11:14 pm

What is sure is that: 1) per RDF semantic, rdf:about is used as an identifier for the channel. 2) per RSS 0.9x usage, the link element is a URL (or URI)...
Eric van der Vlist
vdv@...
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Oct 20, 2000
6:32 am

... To summarize what I think I've heard said, and put that in to terms I think most important for RSS 1.0, then: * the explicit connection between <link> and...
Ken MacLeod
ken@...
Send Email
Oct 20, 2000
12:49 pm

... I find it a good summary. Eric ... -- ... Eric van der Vlist Dyomedea http://dyomedea.com http://xmlfr.org http://4xt.org...
Eric van der Vlist
vdv@...
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Oct 20, 2000
1:25 pm

... <http://www.egroups.com/message/rss-dev/1006> ... If this solves the immediate need, then the next step is to word it as specific changes to the spec, and...
Ken MacLeod
ken@...
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Oct 20, 2000
3:54 pm

... Before writing these up as spec changes, I'd like to see a poll and perhaps even a vote on the issue. I was under the impression that there might be some...
Aaron Swartz
aswartz@...
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Oct 20, 2000
6:34 pm

... No problem, the poll's been seconded (and now thirded :-). I believe we have determined, though the poll will surely help, that there is considerable...
Ken MacLeod
ken@...
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Oct 20, 2000
7:12 pm
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