removed commented text
authorLuc Moreau <l.moreau@ecs.soton.ac.uk>
Wed, 18 Jan 2012 09:05:16 +0000
changeset 1393 1c7cc7f85e6d
parent 1392 d30d7cbfa587
child 1395 8810239ed350
child 1396 fa687552fc00
removed commented text
model/ProvenanceModel.html
--- a/model/ProvenanceModel.html	Tue Jan 17 23:20:40 2012 +0000
+++ b/model/ProvenanceModel.html	Wed Jan 18 09:05:16 2012 +0000
@@ -2207,37 +2207,7 @@
 
 -->
 
-<!-- 
-<section>
-<h4>Transitive Derivation Record</h4>
-
-
-<p>
-If <span class="name">wasDerivedFrom(e2,e1)</span> holds because attribute <span class="name">a2.1</span> of <span class="name">e2</span> is determined by attribute <span class="name">a1.1</span> of <span class="name">e1</span>,
-and if <span class="name">wasDerivedFrom(e3,e2)</span> holds because attribute <span class="name">a3.1</span>of <span class="name">e3</span> is determined by  attribute <span class="name">a2.2</span> of <span class="name">e1</span>, it is not necessarily the case that an attribute of <span class="name">e3</span> is determined by an attribute of <span class="name">e1</span>; so, an asserter may not be able to assert <span class="name">wasDerivedFrom(e3,e1)</span>, since it would fail to satisfy constraint <a href="#derivation-attributes">derivation-attributes</a>.  Hence, the constraint on attributes as expressed in <a href="#derivation-attributes">derivation-attributes</a> invalidates transitivity in the general case.
-</p>
-
-<p>However, there is sense that <span class="name">e3</span> still depends on <span class="name">e1</span>, since <span class="name">e3</span> could not be generated without <span class="name">e1</span> existing. Hence, we introduce a weaker notion of derivation record, which is transitive.</p>
-
-A transitive derivation record, written <span class="name">dependedOn(e2, e1)</span> in PROV-ASN:
-<ul>
-<li> contains an identifier <span class="name">e2</span>, denoting an entity record, which represents the entity that is the result of the derivation;
-<li> contains an identifier <span class="name">e1</span>, denoting an entity record, which represents the entity that the derivation relies upon.
-</ul>
-<p>The record <span class="name">dependedOn</span> can only be inferred; in other words, it cannot be asserted. It is
-transitive by definition and relies on the previously defined derivation assertions for its
-base case.</p>
-
-<div class='constraint' id='transitive-derivation'>
-<ul> 
-<li><span class='conditional'>If</span> <span class="name">wasDerivedFrom(e2,e1)</span> or <span class="name">wasDerivedFrom(e2,e1,pe,attrs2,attrs1)</span> holds, <span class='conditional'>then</span> <span class="name">dependedOn(e2,e1)</span> holds.</li>
-<li><span class='conditional'>If</span> <span class="name">wasEventuallyDerivedFrom(e2,e1)</span> holds, <span class='conditional'>then</span> <span class="name">dependedOn(e2,e1)</span> holds.</li>
-<li><span class='conditional'>If</span> <span class="name">dependedOn(e3,e2)</span> and <span class="name">dependedOn(e2,e1)</span> hold, <span class='conditional'>then</span> <span class="name">dependedOn(e3,e1)</span> holds.</li>
-</ul>
-</div>
-
-</section>
--->
+