]> 2.0 March 19, 2012 Marco Ocana Paolo Ciccarese Silvio Peroni application/rdf+xml en The Collections Ontology (CO) has element The link to the members of a collection is element of The link to a collection in which the object is member. has first item The link to the first item of the list. 0 1 is first item of The link to a list in which the item is first item. is followed by Given the list (I[1], I[2], ... , I[i-1], I[i], I[i+1], ... , I[n-1], I[n]), the item I[i] is followed by I[i+1], ... , I[n-1] and I[n]. The link to the following item in a list. has item The link to every item of the bag has item content The link to the actual resource to which the item refers. is item content of The link to the item that refers to the resource. is item of The link to a bag in which the item is member. has last item The link to the last item of the list. 0 is last item of The link to a list in which the item is last item. has next item Given the list (I[1], I[2], ... , I[i-1], I[i], I[i+1], ... , I[n-1], I[n]), the next item of I[i] is I[i+1]. The link to the next item in a list. is preceded by Given the list (I[1], I[2], ... , I[i-1], I[i], I[i+1], ... , I[n-1], I[n]), the item I[i] is preceded by I[i-1], ... , I[2] and I[1]. The link to the preceding item in a list. has previous item Given the list (I[1], I[2], ... , I[i-1], I[i], I[i+1], ... , I[n-1], I[n]), the previous item of I[i] is I[i-1]. The link to the previous item in a list. has index A number identifying the position, starting from 1, of a particular list item within a list. has size CO defines the size of a collection as the sum of the number of times entities that are part of the collection appear in it. This means that co:size considers how much each entity is involved by a particular collection, i.e.: - the size of the set {a, b, c} is three - the size of the bag [a, a, b, b, b, c] is five - the size of the list (a, b, c, b, a, b, c, c) is seven The number of item belonging to a collection. bag Collection that can have a number of copies of each object collection 1 A group of objects that can be considered as a whole. item Element belonging to a bag list 1 1 An ordered array of items, that can be present in multiple copies list item 1 element belonging to a list set A collection that cannot contain duplicate elements. 1 A list item cannot be preceded by itself A list item cannot be followed by itself 1 1