W3C home > Mailing lists > Public > public-prov-wg@w3.org > June 2011

Re: PROV-ISSUE-19: is this observable or not observable?

From: Paolo Missier <Paolo.Missier@ncl.ac.uk>
Date: Tue, 07 Jun 2011 17:07:24 -0700
Message-ID: <4DEEBD3C.6090008@ncl.ac.uk>
To: Khalid Belhajjame <Khalid.Belhajjame@cs.man.ac.uk>
CC: "public-prov-wg@w3.org" <public-prov-wg@w3.org>
yes, I guess so, in the sense of events -> state transitions.
Not sure this captures everything though:  "Alice  forwarding an online post." is an observable event, but does it map to a state 
change? in a natural way? or does that view force you to think of the world in terms of state machines :-)

Cheers, -Paolo

On 6/7/11 11:32 AM, Khalid Belhajjame wrote:
> Hi Paolo
>> it's a good start, in that it subsumes observing value of data, and
>> therefore the state of a database, for example.
>> But we also need to observe /events/, don't we. For example, data that
>> moves along a communication channel that connects two processors.
>> Someone forwarding an online post. Or  responding to the post.
>    I was wondering if, instead, 'events' can be seen as a means for
> observing (or monitoring) changes, in particular changes in state.
> Would that be fair?
> khalid
Received on Wednesday, 8 June 2011 00:08:03 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:58:05 UTC