Submissions:Symmetric n-ary relationship - Revision history

ValentinaPresutti: Review has been created. Annotation 'assigned' has been removed. Annotation 'waiting' has been removed.

2010-09-16T12:54:56Z

Review has been created. Annotation 'assigned' has been removed. Annotation 'waiting' has been removed.

EvaBlomqvist: Review has been assigned.

2010-09-06T09:58:37Z

Review has been assigned.

EvaBlomqvist: Review has been assigned.

2010-09-06T09:58:15Z

Review has been assigned.

EvaBlomqvist: Review has been assigned.

2010-09-06T09:34:33Z

Review has been assigned.

EvaBlomqvist: Review has been assigned.

2010-09-06T09:34:07Z

Review has been assigned.

EvaBlomqvist: Article is waiting for review.

2010-09-06T09:33:43Z

Article is waiting for review.

MariCarmenSuarezFigueroa at 17:25, 1 September 2010

2010-09-01T17:25:23Z

MariaPoveda at 16:58, 1 September 2010

2010-09-01T16:58:05Z

MariaPoveda at 14:15, 1 September 2010

2010-09-01T14:15:29Z

MariaPoveda at 14:14, 1 September 2010

2010-09-01T14:14:55Z

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 {{Logical OP Description Template
-|Motivation=The symmetric n-ary relationship pattern emerged from the need of modelling distances among two points..This problem is a clear case of an n-ary relationship where the relation between two places needs a further argument to represent the distance. Once we have applied the n-ary pattern for this use case (http://www.w3.org/TR/swbp-n-aryRelations/#useCase1), we can realize that the origin and the destination of the n-ary relation belong to the same class. Moreover, the value for the relationship is the same to represent the distance from A to B and vice-versa. Then, if we want to represent both distances we should instanciate the pattern twice, from A to B and vice-versa, resulting in a redundant representation.
+|Motivation=The symmetric n-ary relationship pattern emerged from the need of modelling distances among two points.
-|Aim=This pattern allows representing symmetric n-ary relationships, i.e. binary relationships between two elements that need a further argument that has the same value for both directions of the relationship. If SNAry is the symmetric n-ary relationship and z is its value for the elements x and y, then:
+This problem is a clear case of an n-ary relationship where the relation between two points needs a further argument to represent the distance between such points.
 SNAry(x,y)=z iff SNAry(y,x)=z
-|Solution=Create a class to represent the n-ary relationship which will contain the value for the further needed argument (Relationship or Attribute). Create a relationship between this class and the classes involved in the symmetric n-ary relationship.
+|Solution=A class to represent the n-ary relationship together with the value for the further needed argument (Relationship or Attribute) has been created.
 |Elements=Class, Relationship, Attribute
 Axioms: cardinality and equivalentClass
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 |ProblemExample=For example, we might want to represent the distance expressed in kilometres between two places.
 |SolutionExample=http://ontologydesignpatterns.org/wiki/images/b/bd/Symmetric_n-ary_relationship_distance.jpg
-|Consequences=The main advantage of this pattern is that allows representing distance between places without being redundant.
+|Consequences=The main advantage of this pattern is that allows representing distance between places without including redundancy in the ontology.
 }}
 {{Logical OP Reference Template

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 {{Logical OP Reference Template
-|Origin=modelling distance between stages of St James Way during the Geobuddies ontology network development (http://geobuddies.dia.fi.upm.es).
+|Origin=Modelling distance between stages of St James Way during the Geobuddies ontology network development (http://geobuddies.dia.fi.upm.es).
 |KnownUse=Geobuddies ontology network
 |RelatedTo=N-ary Relation: New Class (LP-NR -01)