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Re: PROV-ISSUE-526: Data Model Section 5.5.2 [prov-dm]

From: Paolo Missier <Paolo.Missier@ncl.ac.uk>
Date: Tue, 25 Sep 2012 15:11:55 +0100
Message-ID: <5061BBAB.1080707@ncl.ac.uk>
To: Provenance Working Group <public-prov-wg@w3.org>
CC: Provenance Working Group Issue Tracker <sysbot+tracker@w3.org>
The definition is indeed vague to the point that making two entities alternates seems arbitrary.
To me this means that one can always assert the equivalence amongst two entities if *you* think they are aspects of the same thing, 
just like one can assert owl:sameAs, and then live with the consequences.
For instance
a alternateOf b
b alternateOf c
a specializationOf c
would not be consistent if you do the reasoning.

--Paolo



On 9/25/12 8:15 AM, Luc Moreau wrote:
> Hi all,
>
> Can someone make suggestions regarding "how to determine when two entities are considered alternates of each other, or when they 
> are not".
>
> Our definition states "Two alternate ◊ entities present aspects of the same thing. These aspects may be the same or different, and 
> the alternate entities may or may not overlap in time."
>
>
> Thanks,
> Luc
>
> On 10/09/12 09:51, Provenance Working Group Issue Tracker wrote:
>> PROV-ISSUE-526: Data Model Section 5.5.2 [prov-dm]
>>
>> http://www.w3.org/2011/prov/track/issues/526
>>
>> Raised by: Luc Moreau
>> On product: prov-dm
>>
>>
>>
>> http://www.w3.org/2011/prov/wiki/LC_Feedback#Data_Model_Section_5.5.2
>>
>> ISSUE-463
>>
>> It is not clear how to determine when two entities are considered alternates of each other, or when they are not. Please add more 
>> explanation, as this will be important for computational reasoning over provenance information.
>>
>> Through the definition of Influence (figure 8), the relationship "alternateOf" should require an ID and support an optional list 
>> of attributes.
>>
>>
>>
>>
>>
>>
>


-- 
-----------  ~oo~  --------------
Paolo Missier - Paolo.Missier@newcastle.ac.uk, pmissier@acm.org
School of Computing Science, Newcastle University,  UK
http://www.cs.ncl.ac.uk/people/Paolo.Missier
Received on Tuesday, 25 September 2012 14:22:06 GMT

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