chung wrote:
> On Fri, 2010-06-18 at 15:07 +0300, Nina Jeliazkova wrote:
>   
>>> Is there any kind of information in the representation of a model which
>>> should be hidden/protected? I think the model representations as they
>>> are now do not have anything about the model itself such as its
>>> equation, coefficients etc...
>>>   
>>>       
>> No, but you have this in PMML / TEXT representation .  I would say the
>> current model API is a bit inconsistent, since RDF is actually a
>> metadata of the model, not the model itself.  
>> It might be reasonable to introduce additional URIs to retrieve model
>> content, where applicable, e.g.  /model/1 retrieves metadata,
>> but /model/1/content retrieves the model itself. 
>>     
>
> If you need model's metadata, ask for RDF otherwise ask for
> application/xml and you get the PMML representation of the model, i.e.
> its content. So I don't think we really need to separate these. What is
> more there are models with no content such as leverages or even some
> lazy ones (like kNN), so /model/{id}/content will be redundant.
>   
This is true in case policies are not involved - but policies don't
account for media type - there is no way to protect PMML , but allow RDF
representation.

Regards,
Nina
> Best Regards,
> Pantelis
>