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  Collections ontology  ORE ontology
unordered and ordered collections are represented by two separate class constructs, Bag and List respectively+unordered and ordered collections are represented by the same class construct, Aggregation
+item property names are easy to understand (e.g., index, itemContent, nextItem)item property names are cryptic (e.g., proxyFor, proxyIn, next)
order is determined by an item property pointing to the next item, i.e.,  nextItemorder is determined by an item property pointing to the next item, i.e., next
URI for the item is not associated with the collection class (e.g., List, Bag).+URI for the item is associated with the collection class (i.e., Aggregation) via of the aggregates property.
+URI for the item is associated with the item class (i.e., Item) via the itemContent property.+URI for the item is associated with the item class (i.e., Proxy) via the proxyFor property.

 

 

Ordered Collection Examples

 

Example 1-co:  A Virtual Collection as an ordered collection of items using Collection Ontology's List with one item

 

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Code Block
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<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#List>
<http://localhost:3000/individual/vc155> <http://purl.org/co#size> "1"^^xsd:nonNegativeInteger
<http://localhost:3000/individual/vc155> <http://purl.org/co#firstItem> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#lastItem> <http://localhost:3000/individual/vci162>

<http://localhost:3000/individual/vci162> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci162> <http://purl.org/co#index> "1"^^xsd:positiveInteger
<http://localhost:3000/individual/vci162> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652730>

 

 

 

Code Block
languagenone
titleTurtle using Collection ontology's List class
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix co:      <http://purl.org/co> .
 
<http://localhost:3000/individual/vc155> a co:List ;
  co:size       "1"^^xsd:nonNegativeInteger ;
  co:firstItem  <http://localhost:3000/individual/vci162> ;
  co:item       <http://localhost:3000/individual/vci162> ;
  co:lastItem   <http://localhost:3000/individual/vci162> .
 
<http://localhost:3000/individual/vci162> a co:ListItem
  co:index        "1"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652730> .

 

 

 

Example 1-ore:  A Virtual Collection as an ordered collection of items using ORE Ontology's Aggregation with one item

 

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<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Aggregation>
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652730>

 

 

 

Code Block
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titleTurtle using ORE ontology's Aggregation class
@prefix ore:     <http://www.openarchives.org/ore/terms/> .
  
<http://localhost:3000/individual/vc155> a ore:Aggregation ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652730> .

 

 

 

Example 2-co: A Virtual Collection as an ordered collection of items using Collection Ontology's List with multiple ordered items

 

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titleExpand to see n-triples...
Code Block
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titlen-triples
<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#List>
<http://localhost:3000/individual/vc155> <http://purl.org/co#size> "4"^^xsd:nonNegativeInteger
<http://localhost:3000/individual/vc155> <http://purl.org/co#firstItem> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci163>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci164>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci165>
<http://localhost:3000/individual/vc155> <http://purl.org/co#lastItem> <http://localhost:3000/individual/vci165>

<http://localhost:3000/individual/vci162> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci162> <http://purl.org/co#index> "1"^^xsd:positiveInteger
<http://localhost:3000/individual/vci162> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652730>
<http://localhost:3000/individual/vci162> <http://purl.org/co#nextItem> <http://localhost:3000/individual/vci163>

<http://localhost:3000/individual/vci163> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci163> <http://purl.org/co#index> "2"^^xsd:positiveInteger
<http://localhost:3000/individual/vci163> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652234>
<http://localhost:3000/individual/vci163> <http://purl.org/co#nextItem> <http://localhost:3000/individual/vci164>

<http://localhost:3000/individual/vci164> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci164> <http://purl.org/co#index> "3"^^xsd:positiveInteger
<http://localhost:3000/individual/vci164> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652543>
<http://localhost:3000/individual/vci164> <http://purl.org/co#nextItem> <http://localhost:3000/individual/vci165>

<http://localhost:3000/individual/vci165> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci165> <http://purl.org/co#index> "4"^^xsd:positiveInteger
<http://localhost:3000/individual/vci165> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652884>

 

 

 

Code Block
languagenone
titleTurtle using Collection ontology's List class
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix co:      <http://purl.org/co> .

<http://localhost:3000/individual/vc155> a co:List ;
  co:size       "4"^^xsd:nonNegativeInteger ;
  co:firstItem  <http://localhost:3000/individual/vci162> ;
  co:item       <http://localhost:3000/individual/vci162> ;
  co:item       <http://localhost:3000/individual/vci163> ;
  co:item       <http://localhost:3000/individual/vci164> ;
  co:item       <http://localhost:3000/individual/vci165> ;
  co:lastItem   <http://localhost:3000/individual/vci165> .
 
<http://localhost:3000/individual/vci162> a co:ListItem ;
  co:index        "1"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  co:nextItem     <http://localhost:3000/individual/vci163> .

<http://localhost:3000/individual/vci163> a co:ListItem ;
  co:index        "2"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  co:nextItem     <http://localhost:3000/individual/vci164> .

<http://localhost:3000/individual/vci164> a co:ListItem ;
  co:index        "3"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652543> ;
  co:nextItem     <http://localhost:3000/individual/vci165> .

<http://localhost:3000/individual/vci165> a co:ListItem ;
  co:index        "4"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652884> .

 

 

 

Example 2-ore:  A Virtual Collection as an ordered collection of items using ORE Ontology's Aggregation with multiple ordered items

 

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Code Block
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<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Aggregation> .
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652730> .
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652234> .
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652543> .

<http://localhost:3000/individual/pxy162> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/pxy162> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652730> .
<http://localhost:3000/individual/pxy162> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .
<http://localhost:3000/individual/pxy162> <http://www.iana.org/assignments/relation/next> <http://localhost:3000/individual/pxy163> .

<http://localhost:3000/individual/pxy163> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/pxy163> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652234> .
<http://localhost:3000/individual/pxy163> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .
<http://localhost:3000/individual/pxy163> <http://www.iana.org/assignments/relation/next> <http://localhost:3000/individual/pxy164> .

<http://localhost:3000/individual/pxy164> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/pxy164> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652543> .
<http://localhost:3000/individual/pxy164> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .

 

 

 

Code Block
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titleTurtle using ORE ontology's Aggregation class
@prefix ore:     <http://www.openarchives.org/ore/terms/> .
@prefix iana:    <http://www.iana.org/assignments/relation/> .
 
<http://localhost:3000/individual/vc155> a ore:Aggregation ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652543> .
 
<http://localhost:3000/individual/pxy162> a ore:Proxy ;
  ore:proxyFor <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  ore:proxyIn <http://localhost:3000/individual/vc155> ;
  iana:next <http://localhost:3000/individual/pxy163> .
 
<http://localhost:3000/individual/pxy163> a ore:Proxy ;
  ore:proxyFor <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  ore:proxyIn <http://localhost:3000/individual/vc155> ;
  iana:next <http://localhost:3000/individual/pxy164> .
 
<http://localhost:3000/individual/pxy164> a ore:Proxy ;
  ore:proxyFor <http://da-rdf.library.cornell.edu/individual/b3652543> ;
  ore:proxyIn <http://localhost:3000/individual/vc155> .

 

 

Unordered Collection Examples

Example 3-co:  A Virtual Collection as an unordered collection of items using Collection Ontology's Bag with one item
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titleExpand to see n-triples...
Code Block
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titlen-triples
<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#List>
<http://localhost:3000/individual/vc155> <http://purl.org/co#size> "1"^^xsd:nonNegativeInteger
<http://localhost:3000/individual/vc155> <http://purl.org/co#firstItem> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#lastItem> <http://localhost:3000/individual/vci162>

<http://localhost:3000/individual/vci162> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci162> <http://purl.org/co#index> "1"^^xsd:positiveInteger
<http://localhost:3000/individual/vci162> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652730>
Code Block
titleTurtle using Collection ontology's Bag class
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix co:      <http://purl.org/co> .
 
<http://localhost:3000/individual/vc155> a co:Bag ;
  co:size       "1"^^xsd:nonNegativeInteger ;
  co:firstItem  <http://localhost:3000/individual/vci162> ;
  co:item       <http://localhost:3000/individual/vci162> ;
  co:lastItem   <http://localhost:3000/individual/vci162> .
 
<http://localhost:3000/individual/vci162> a co:ListItem
  co:index        "1"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652730> .

 

Example 3-ore:  A Virtual Collection as an unordered collection of items using ORE Ontology's Aggregation with one item
Expand
titleExpand to see n-triples...
Code Block
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titlen-triples
<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Aggregation>
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652730>
Code Block
languagenone
titleTurtle using ORE ontology's Aggregation class
@prefix ore:     <http://www.openarchives.org/ore/terms/> .
  
<http://localhost:3000/individual/vc155> a ore:Aggregation ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652730> .

 

Example 4-co: A Virtual Collection as an unordered collection of items using Collection Ontology's Bag with multiple unordered items
Expand
titleExpand to see n-triples...
Code Block
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titlen-triples
<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#List>
<http://localhost:3000/individual/vc155> <http://purl.org/co#size> "4"^^xsd:nonNegativeInteger
<http://localhost:3000/individual/vc155> <http://purl.org/co#firstItem> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci162>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci163>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci164>
<http://localhost:3000/individual/vc155> <http://purl.org/co#item> <http://localhost:3000/individual/vci165>
<http://localhost:3000/individual/vc155> <http://purl.org/co#lastItem> <http://localhost:3000/individual/vci165>

<http://localhost:3000/individual/vci162> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci162> <http://purl.org/co#index> "1"^^xsd:positiveInteger
<http://localhost:3000/individual/vci162> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652730>
<http://localhost:3000/individual/vci162> <http://purl.org/co#nextItem> <http://localhost:3000/individual/vci163>

<http://localhost:3000/individual/vci163> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci163> <http://purl.org/co#index> "2"^^xsd:positiveInteger
<http://localhost:3000/individual/vci163> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652234>
<http://localhost:3000/individual/vci163> <http://purl.org/co#nextItem> <http://localhost:3000/individual/vci164>

<http://localhost:3000/individual/vci164> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci164> <http://purl.org/co#index> "3"^^xsd:positiveInteger
<http://localhost:3000/individual/vci164> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652543>
<http://localhost:3000/individual/vci164> <http://purl.org/co#nextItem> <http://localhost:3000/individual/vci165>

<http://localhost:3000/individual/vci165> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/individual/vci165> <http://purl.org/co#index> "4"^^xsd:positiveInteger
<http://localhost:3000/individual/vci165> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652884>

Code Block
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titleTurtle using Collection ontology's List class
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix co:      <http://purl.org/co> .

<http://localhost:3000/individual/vc155> a co:List ;
  co:size       "4"^^xsd:nonNegativeInteger ;
  co:firstItem  <http://localhost:3000/individual/vci162> ;
  co:item       <http://localhost:3000/individual/vci162> ;
  co:item       <http://localhost:3000/individual/vci163> ;
  co:item       <http://localhost:3000/individual/vci164> ;
  co:item       <http://localhost:3000/individual/vci165> ;
  co:lastItem   <http://localhost:3000/individual/vci165> .
 
<http://localhost:3000/individual/vci162> a co:ListItem ;
  co:index        "1"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  co:nextItem     <http://localhost:3000/individual/vci163> .

<http://localhost:3000/individual/vci163> a co:ListItem ;
  co:index        "2"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  co:nextItem     <http://localhost:3000/individual/vci164> .

<http://localhost:3000/individual/vci164> a co:ListItem ;
  co:index        "3"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652543> ;
  co:nextItem     <http://localhost:3000/individual/vci165> .

<http://localhost:3000/individual/vci165> a co:ListItem ;
  co:index        "4"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652884> .

 

Example 4-ore:  A Virtual Collection as an unordered collection of items using ORE Ontology's Aggregation with multiple unordered items
Expand
titleExpand to see n-triples...
Code Block
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titlen-triples
<http://localhost:3000/individual/vc155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Aggregation> .
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652730> .
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652234> .
<http://localhost:3000/individual/vc155> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652543> .

<http://localhost:3000/individual/pxy162> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/pxy162> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652730> .
<http://localhost:3000/individual/pxy162> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .
<http://localhost:3000/individual/pxy162> <http://www.iana.org/assignments/relation/next> <http://localhost:3000/individual/pxy163> .

<http://localhost:3000/individual/pxy163> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/pxy163> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652234> .
<http://localhost:3000/individual/pxy163> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .
<http://localhost:3000/individual/pxy163> <http://www.iana.org/assignments/relation/next> <http://localhost:3000/individual/pxy164> .

<http://localhost:3000/individual/pxy164> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/pxy164> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652543> .
<http://localhost:3000/individual/pxy164> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .
Code Block
languagenone
titleTurtle using ORE ontology's Aggregation class
@prefix ore:     <http://www.openarchives.org/ore/terms/> .
@prefix iana:    <http://www.iana.org/assignments/relation/> .
 
<http://localhost:3000/individual/vc155> a ore:Aggregation ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  ore:aggregates <http://da-rdf.library.cornell.edu/individual/b3652543> .
 
<http://localhost:3000/individual/pxy162> a ore:Proxy ;
  ore:proxyFor <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  ore:proxyIn <http://localhost:3000/individual/vc155> ;
  iana:next <http://localhost:3000/individual/pxy163> .
 
<http://localhost:3000/individual/pxy163> a ore:Proxy ;
  ore:proxyFor <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  ore:proxyIn <http://localhost:3000/individual/vc155> ;
  iana:next <http://localhost:3000/individual/pxy164> .
 
<http://localhost:3000/individual/pxy164> a ore:Proxy ;
  ore:proxyFor <http://da-rdf.library.cornell.edu/individual/b3652543> ;
  ore:proxyIn <http://localhost:3000/individual/vc155> .

 XXX

QUESTIONS:

  • Should Virtual Collection's type be a subclass of co:List instead of a co:List?
    • If so, what is the type?  Consensus:   Subclass of co:List  Ontology to be defined by ontology group.
    • Is it LD4L specific?  Consensus:  YES to be defined by ontology group.
    • How is LD4L defining new types?  Naming convention, namespace, etc.?  Final definitions by ontology group.
      • For now, use namespace=LD4L in Ruby with link <http://ld4l.org/ontology/...  – to be defined by ontology group
      • Class name=ld4l:VirtualCollection
      • type URI=<http://ld4l.org/ontology/VirtualCollection>
      • instance URI=<http://localhost:3000/individual/vc123> –
        • what ever I want for now
        • suggest use of individual in URI meaning an instance of a class (used by VIVO too)
        • id starts with alpha because syntax something:vc123 – cannot have number directly after :

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