misc prep
authorLuc Moreau <l.moreau@ecs.soton.ac.uk>
Fri, 09 Mar 2012 13:59:17 +0000
changeset 1851 c0ce300cbb57
parent 1850 3761c08dbcd9
child 1852 dffdb1ec2e67
child 1854 909b61e16109
misc prep
model/working-copy/wd5-prov-dm-misc.html
--- a/model/working-copy/wd5-prov-dm-misc.html	Fri Mar 09 08:41:22 2012 -0500
+++ b/model/working-copy/wd5-prov-dm-misc.html	Fri Mar 09 13:59:17 2012 +0000
@@ -322,7 +322,7 @@
 The motivation for introducing  agents in prov-dm is to denote the agent's responsibility for activities. It is however impossible to describe the start/end of an activity without  introducing agents, and therefore assigning responsibility.
 </p>
 
-<p id="proposal3"><b>PROPOSED</b>: to formulate start and end of activities independently of responsibility and agents. Hence, start and end of activity would no longer be a form of activity association. Instead of an agent, an optional entity trigger would be allowed.</p>
+<p id="proposal2"><b>PROPOSED</b>: to formulate start and end of activities independently of responsibility and agents. Hence, start and end of activity would no longer be a form of activity association. Instead of an agent, an optional entity trigger would be allowed.</p>
 
 <p><em>The text would include the following.</em></p>
 
@@ -384,30 +384,48 @@
 </pre>
 </div>
 
+<div class="anexample">
+<p>
+In the following example, a race is started by a bang, and responsibility for this trigger is attributed to an agent 
+ <span class="name">ex:DarthVader</span>.
+<pre class="codeexample">
+activity(ex:foot_race)
+wasStartedBy(ex:foot_race,ex:bang,2012-03-09T08:05:08-05:00)
+entiy(ex:bang)
+agent(ex:DarthVader)
+wasAttributedTo(ex:foot_race,ex:DarthVader)
+</pre>
+</div>
+
+
+
 <div class="note">
 Constraints need to be added to part II, to ensure that time information on activity matches time information on Start/End.
 </div>
 
 </section>
 
-<section id="Open Issues/Questions">
-<h4>Open Issues</h4>
+<section id="Proposal 3: Activity Started/Ended by Another Activity">
+<h4>Proposal 3: Activity Started/Ended by Another Activity</h4>
 
-<ul>
-<li>If Proposal 3 is accepted, how do I assert that an agent started an activity not merely as a triggering entity but also had responsibility for doing so.
-Then, one can assert
-<pre>
-activity(a1)
-agent(ag)
-wasStartedBy(a1,ag)
-wasAssociatedWith(a1,ag)
+<b>Context:</b>
+The name wasStartedBy is overloaded.
+There is
+<pre class="codeexample">
+wasStartedBy(activity,entity)         
+wasStartedBy(activity,activity)       
 </pre>
+This overloading is problematic in the ontology.
+</p>
 
-<li>
-How would wasStartedBy/wasEndedBy relate to wasInformedBy?
+<p id="proposal3"><b>PROPOSED</b>: to rename wasStartedBy(activity,activity) in wasStartedByActivity(activity,activity)</p>
 
-<li>Should we drop startTime/endTime from Activity now that it present in Start/End
-</ul>
+
+<div class="note">
+It was suggested that we could drop the relation wasStartedBy(activity,activity) and mandate explicit declaration of 
+entity: wasStartedBy(a2,entity) wasGeneratedBy(entity,a1).
+Thoughts?
+</div>
 
 
 </section>