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Re: alternate example in primer

From: Ivan Herman <ivan@w3.org>
Date: Tue, 13 Nov 2012 15:09:26 -0500
Cc: W3C provenance WG <public-prov-wg@w3.org>
Message-Id: <CF72251F-D788-49BB-B77C-1E52D31B5E0F@w3.org>
To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
(also echoing the concerns some others had...)

Question: What is the percentage of the expected audience of this primer who really understand what content negotiation is all about? My answer is: not very high:-(

Seriously, content negotiations and mime time may be a black art for many who would want to use our ontology.

(I may be wrong, I did not make some sort of a scientific study...)

On Nov 13, 2012, at 09:46 , Luc Moreau wrote:

> Hi,
> When preparing the PROV tutorial at ISCW'12, we discussed the example for alternate in the primer.
>   , if a file is copied from one directory to another, we may want to say that (according to our model) these are both the same file, just in a different location. We may say that the file in the first directory, F1, is an alternate of the file in the second directory, F2. Note that it is the context (location) rather than content of the file that differs between the entities in this case.
> We didn't find this example as the most compelling. 
>  I don't think that in general, copying a file creates  an alternate. If file f2 is a copy of file f1, I don't know what same thing, f1 and f2 present a same aspect of. And while there is some form of caveat "accordign to our model", this example may be confusing for readers.
> Instead of this example, we decided to use a content negotiation example:
> Dereferencing a url requesting different mime types eg. turtle or rdf/xml, returns two entities that are alternate of each other.
> If we are in agreement, can we change the primer accordingly?
> thanks,
> Luc
> -- 
> Professor Luc Moreau
> Electronics and Computer Science   tel:   +44 23 8059 4487
> University of Southampton          fax:   +44 23 8059 2865
> Southampton SO17 1BJ               email: 
> l.moreau@ecs.soton.ac.uk
> United Kingdom                     
> http://www.ecs.soton.ac.uk/~lavm

Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
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Received on Tuesday, 13 November 2012 20:09:56 GMT

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