Re: Bundles explained

Thanks, Daniel.  You make a great point about the "trust" I have in my
observers, I keep forgetting that is one of the key motivators here.

Thank you.

--
Mike Loll


On Mon, Oct 28, 2013 at 7:58 AM, Daniel Garijo <
dgarijo@delicias.dia.fi.upm.es> wrote:

> Hi Mike,
> yes, bundles are mainly for describing the provenance of provenance.
> Regarding example 40, it would be usesul to know how the different
> observers saw the creation of the reports if you trust more one of them.
> Should all provenance assertions be contained in a bundle? Ideally yes,
> but take into account that describing who is the creator of a bundle is
> itself a provenance assertion, and at some point you may not be interested
> in recording the provenance of provenance of provenance.
>
> I hope this helps,
> Best,
> Daniel
>
>
> 2013/10/28 Mike Loll <mike.loll@gmail.com>
>
>> I'm having some difficulty wrapping my head around when bundles would be
>> used.  Is it so we can describe how a set of provenance records came to be
>> (the provenance of the provenance)?
>>
>> I'm having a little difficulty wrapping my head around the use cases.
>>
>> Example 40 from
>> http://www.w3.org/TR/2013/REC-prov-dm-20130430/#component4 shows two
>> reports (r1, r2) being generated with r2 derived from r1.  It then
>> describes a bundle describing that "Bob" witnessed r1 being generated.  The
>> example goes on to show a bundle for "Alice" observing the generation of r2.
>>
>> How is this useful?  I think my real question is shouldn't all provenance
>> events be contained in a bundle?
>>
>> Any insight is appreciated.
>>
>> I'm working on a clojure implementation of the provenance model as an
>> exercise and I want to be sure I have my understanding set.
>>
>> Thanks.
>>
>>
>> --
>> Mike Loll
>>
>
>