Update of the features' document (was Re: F2F resolutions and document changes)

Hi Christine,

thanks for the quick reactions!

Christine Golbreich wrote:
[skip]
> 
>> - 2.2.5: I wonder whether it is possible to give a short (though not
>> necessarily complete) description of the global restrictions on how to
>> use property chains. The current text refers to the syntax document
>> which is, well, not really easy to read and certainly on the level of
>> the readers of this document....
> 
> Agree,  but it's rather challenging : global restrictions are not
> trivial ... and as said in the syntax, it's rather technical, it's why
> I refered to it :-)
> I'll see whether I might add something simple, and still correct
> without going into too much details, but it's not sure.
> 

Yes, it is challenging. Maybe one of our DL experts could help in some
clean formulation...

[snip]
> 
>> - 2.5.1: it might be good to have examples for the (new) possibilities
>> of defining ranges and domains for annotations and defining sub
>> properties for annotations. I am not sure any of the use cases have
>> that, though...
> 
> I'm waiting for their inclusion in the syntax doc, to give an example
> in the right syntax.
> 

fair enough!

>> - It may be worth adding the top and bottom object properties to
>> features. Boris had some great example for the type of expression one
>> might have with those around.
> 
> I don't remember Boris' examples.  But an example from a real UC might
> be the top property used for the RO ontology (ontology of relations)
> as a root of the relations ?
> However, as some members said at the F2F, their use is a little
> dangerous. So do we really want  to stress these properties in adding
> a new feature for them ?
> 

I may be wrong (others should comment, please) but I believe the
'dangerous' aspect of top and bottom properties was discussed in the
context of OWL RL. I do not believe they are dangerous in other
profiles, but I might be wrong.

Thanks

Ivan

-- 

Ivan Herman, W3C Semantic Web Activity Lead
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