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Table of Contents

Table of Contents

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Name	Prefix	URL	Details	Comments
RDF	rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#	specification
RDF Schema	rdfs	http://www.w3.org/2000/01/rdf-schema#	specification
Dublin Core	dc	http://purl.org/dc/elements/1.1/	specification
Dublin Core Terms	dcterms	http://purl.org/dc/terms	specification	Required by OA
Dublin Core Types	dctype	http://purl.org/dc/dcmitype	specification	Required by OA
Content	cnt	http://www.w3.org/2011/content#	specification	Required by OA
ORE	ore	http://www.openarchives.org/ore/ 1.0 terms/ vocabulary#otherRelationships	specification	Recommended as an alternative to the Collections ontology by Rob. Represents both ordered and unordered items using the Aggregation class.
IANA	iana	http://www.iana.org/assignments/relation/	specification	ORE uses this ontology for first, last, next, and prev predicates.
Collections	co	http://purl.org/co	specification, examples	Can represent unordered items using the Bag class and ordered items using the List class.
Open Annotation	oa	http://www.w3.org/ns/oa	specification
Friend of a Friend	foaf	http://xmlns.com/foaf/0.1	specification	Also used by OA

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Virtual Collection's owner

Note: The owner is represented as dc:creator in the Virtual Collection's metadata.

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title	Expand to see n-triples...

Code Block

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title	n-triples

<http://vivo.cornell.edu/individual/individual24416> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<http://vivo.cornell.edu/individual/individual24416> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Agent> .

Code Block

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title	Turtle

@prefix foaf:    <http://xmlns.com/foaf/0.1> .

<http://vivo.cornell.edu/individual/individual24416> a foaf:Person, foaf:Agent .
<http://vivo.cornell.edu/individual/individual24416> a foaf:Agent .

NOTE:

ORE uses OR E uses foaf:Agent as the dc:creator.

QUESTIONS:

What URI do we use for a user?
ANSWER: Each university will determine what to use as the URI for users.
Cornell: Will use VIVO URI's for faculty and staff. Doesn't work for students.
Ex. VIVO URI - http://vivo.cornell.edu/individual/rjv23 – rjv23 is a netid
Ex. VIVO URI - http://vivo.cornell.edu/individual/individual24416 – 24416 is not a netid
Ex. VIVO URI - http://vivo.cornell.edu/individual/EleanorRayle - EleanorRayle is not a netid
For the purposes of our experiment, if the user doesn't exist in VIVO, then they can't create a Virtual Collection.
Harvard: ?
Stanford: ?

Expand

title	Reconciled Questions

Do we want to keep any other foaf properties beyond setting the type to foaf person?
- ANSWER: None extra needed in our triplestore. We can revisit this if it becomes clear by the implementation that we need to keep additional information.

Virtual Collection's metadata

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title	Expand to see n-triples...

Code Block

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title	n-triples

<http://localhost:3000/virtualcollectionindividual/changeme:155>vc155> <http://wwwpurl.w3.org/2000dc/01terms/rdf-schema#label>title> "My Virtual Collection" .
<http://localhost:3000/virtualcollectionindividual/changeme:155>vc155> <http://www.w3purl.org/2000dc/01terms/rdf-schema#comment>description> "These are resources I am gathering together for personal use." .
<http://localhost:3000/virtualcollectionindividual/changeme:155>vc155> <http://purl.org/dc/elements/1.1/creator> <http://vivo.cornell.edu/individual/individual24416> .

Code Block

language	none
title	Turtle

@prefix rdfsdc:         <http://wwwpurl.w3.org/2000/01/rdf-schema#>dc/elements/1.1/> .
@prefix dctdcterms:      <http://purl.org/dc/terms> .
 
<http://localhost:3000/virtualcollectionindividual/changeme:155>vc155>
  dctdcterms:title        "My Virtual Collection" ;
  dctdcterms:description  "These are resources I am gathering together for personal use." ;
  dc:creator           <http://vivo.cornell.edu/individual/individual24416> .

NOTE: Potential alternatives... Waiting for ontology group to weigh in and tell me which to use.

rdfs:label – dc:title
rdfs:comment – dc:description
dc:creator – dct:creator

QUESTIONS:

dc:creator is being used to identify the "owner" of the virtual collection. Should the owner relationship be more explicit? See Access Thoughts below for more info on what it means to be an owner. Consensus: For now, we will go with just dct:creator. When we have a use case requiring more complex (e.g. multiple creators) creator - owner relationships, we can revisit.

Virtual Collection's list of items

Example 1: A Virtual Collection as a List with one Item

QUESTIONS:

Should dc:creator be used for ownership role?
ANSWER: NO - per Paolo
REASON: Muddy concept. Did the user create the resource or add the resource to the collection?
ALTERNATIVE: Under exploration. Paolo recommends looking at...
PROV ontology - provenance
PAV ontology - provenance, authoring, and versioning

Expand

title	Reconciled Questions

What properties should be used to express the virtual collection metadata? Possibilities and answer as Selected Property…

Concept	Potential Properties	Selected Property	Comments
Title	rdfs:label, dc:title, dcterms:title	dcterms:title	Based on ORE ontology specification
Description	rdfs:comment, dc:description, dcterms:description	dcterms:description	Based on ORE ontology specification
Owner	dc:creator, dcterms:creator	dc:creator	Based on ORE ontology specification

Virtual Collection's list of items

Two ontologies have been identified as potential candidates for representing a list of items. The pros and cons are listed below for each ontology, followed by examples using each ontology.

	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., nextItem.	–	order 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 can be associated directly to the collection class through co:element. co:element is defined through a chain: has sub-property chains [has item o has item content]. That means that the inference layer can resolve both (Paolo).	+	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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title	n-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

language	none
title	Turtle 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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title	Expand to see n-triples...

Code Block

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title	n-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

language	none
title	Turtle 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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title	Expand to see n-triples...

Code Block

language	none
title	n-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

language	none
title	Turtle 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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title	Expand to see n-triples...

Code Block

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title	n-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/vci162> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/vci162> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652730> .
<http://localhost:3000/individual/vci162> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .
<http://localhost:3000/individual/vci162> <http://www.iana.org/assignments/relation/next> <http://localhost:3000/individual/vci163> .

<http://localhost:3000/individual/vci163> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/vci163> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652234> .
<http://localhost:3000/individual/vci163> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .
<http://localhost:3000/individual/vci163> <http://www.iana.org/assignments/relation/next> <http://localhost:3000/individual/vci164> .

<http://localhost:3000/individual/vci164> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Proxy> .
<http://localhost:3000/individual/vci164> <http://www.openarchives.org/ore/terms/proxyFor> <http://da-rdf.library.cornell.edu/individual/b3652543> .
<http://localhost:3000/individual/vci164> <http://www.openarchives.org/ore/terms/proxyIn> <http://localhost:3000/individual/vc155> .

Code Block

language	none
title	Turtle 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/vci162> 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/vci163> .
 
<http://localhost:3000/individual/vci163> 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/vci164> .
 
<http://localhost:3000/individual/vci164> 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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title	Expand to see n-triples...

Code Block

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title	n-triples

<http://localhost:3000/individual/vc255> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#Bag> .
<http://localhost:3000/individual/vc255> <http://purl.org/co#size> "1"^^xsd:nonNegativeInteger .
<http://localhost:3000/individual/vc255> <http://purl.org/co#item> <http://localhost:3000/individual/vci162> .

<http://localhost:3000/individual/vci262> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#Item> .
<http://localhost:3000/individual/vci262> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652730> .

Code Block

language	none
title	Turtle 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/vc255> a co:Bag ;
  co:size       "1"^^xsd:nonNegativeInteger ;
  co:item       <http://localhost:3000/individual/vci262> .
 
<http://localhost:3000/individual/vci262> a co:Item ;
  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

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title	Expand to see n-triples...

Code Block

language	none
title	n-triples

<http://localhost:3000/individual/vc255> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Aggregation>
<http://localhost:3000/individual/vc255> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652730>

Code Block

language	none
title	Turtle using ORE ontology's Aggregation class

@prefix ore:     <http://www.openarchives.org/ore/terms/> .
  
<http://localhost:3000/individual/vc255> 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

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title	Expand to see n-triples...

Code Block

language	none
title	n-triples

<http://localhost:3000/individual/vc255> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#Bag> .
<http://localhost:3000/individual/vc255> <http://purl.org/co#size> "4"^^xsd:nonNegativeInteger .
<http://localhost:3000/individual/vc255> <http://purl.org/co#item> <http://localhost:3000/individual/vci262> .
<http://localhost:3000/individual/vc255> <http://purl.org/co#item> <http://localhost:3000/individual/vci263> .
<http://localhost:3000/individual/vc255> <http://purl.org/co#item> <http://localhost:3000/individual/vci264> .

Expand

title	Expand to see n-triples...

Code Block

language	none
title	n-triples

<http://localhost:3000/virtualcollection/changeme:155> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#List>
<http://localhost:3000/virtualcollection/changeme:155> <http://purl.org/co#size> "1"^^xsd:nonNegativeInteger
<http://localhost:3000/virtualcollection/changeme:155> <http://purl.org/co#firstItem> <http://localhost:3000/virtualcollection/item/changeme:156>
<http://localhost:3000/virtualcollectionindividual/changeme:155>vc255> <http://purl.org/co#item> <http://localhost:3000/virtualcollection/item/changeme:156>individual/vci265> .

<http://localhost:3000/virtualcollectionindividual/changeme:155>vci262> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#lastItem>co#Item> .
<http://localhost:3000/virtualcollection/item/changeme:156>individual/vci262> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652730> .

<http://localhost:3000/virtualcollection/item/changeme:156>individual/vci263> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#ListItem>
<http://localhost:3000/virtualcollection/item/changeme:156> <http://purl.org/co#index> "1"^^xsd:positiveIntegerco#Item> .
<http://localhost:3000/virtualcollection/item/changeme:156>individual/vci263> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652730>

Code Block

language	none
title	Turtle

@prefix rdf:

b3652234> .

<http://localhost:3000/individual/vci264> <http://www.w3.org/1999/02/22-rdf-syntax-

ns#>

ns#type> <http://purl.org/co#Item> .

@prefix co:

<http://localhost:3000/individual/vci264> <http://purl.org/

co>

co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652543> .


<http://localhost:3000/

virtualcollection

individual/

changeme:155> a co:List ; co:size "1"^^xsd:nonNegativeInteger ; co:firstItem

vci265> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#Item> .
<http://localhost:3000/individual/vci265> <http://purl.org/co#itemContent> <http://da-rdf.library.cornell.edu/individual/b3652884> .

Code Block

language	none
title	Turtle using Collection ontology's Bag class

@prefix rdf:/virtualcollection/item/changeme:156> ;
  co:item       <http://localhost:3000/virtualcollection/item/changeme:156> ;
  co:lastItemwww.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix co:      <http://localhost:3000/virtualcollection/item/changeme:156>purl.org/co> .
 
<http://localhost:3000/virtualcollection/item/changeme:156> a co:ListItemindividual/vc255> a co:Bag ;
  co:size       "4"^^xsd:nonNegativeInteger ;
  co:indexitem        "1"^^xsd:positiveInteger<http://localhost:3000/individual/vci262> ;
  co:itemContentitem       <http://da-rdf.library.cornell.edulocalhost:3000/individual/b3652730> .

Example 2: A Virtual Collection as a List with multiple ordered Items

vci263> ;
  co:item       <http://localhost:3000/

virtualcollection/changeme:155>
individual/vci264> ; co:item <http://
www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/co#List>
localhost:3000/individual/vci265> . <http://localhost:3000/
virtualcollection/changeme:155> <http://purl.org/co#size> "4"^^xsd:nonNegativeInteger
individual/vci262> a co:ListItem ; co:itemContent <http://da-rdf.library.cornell.edu/individual/b3652730> . <http://localhost:3000/
virtualcollection/changeme:155>
individual/vci263> a co:ListItem ; co:itemContent <http://
purl.org/co#firstItem>
da-rdf.library.cornell.edu/individual/b3652234> . <http://localhost:3000/
virtualcollection/item/changeme:156> <http://localhost:3000/virtualcollection/changeme:155>
individual/vci264> a co:ListItem ; co:itemContent <http://
purl.org/co#item>
da-rdf.library.cornell.edu/individual/b3652543> . <http://localhost:3000/
virtualcollection/item/changeme:156> <http://localhost:3000/virtualcollection/changeme:155>
individual/vci265> a co:ListItem ; co:itemContent <http://
purl.org/co#item> <http://localhost:3000/virtualcollection/item/changeme:157>
da-rdf.library.cornell.edu/individual/b3652884> .

Expand

title	Expand to see n-triples...

Code Block

language	none
title	n-triples

(Paolo) This can be simplified to (see https://code.google.com/p/collections-ontology/wiki/SetExample1) :

<http://localhost:3000/

...

individual/vc255> a co:Bag ;
  co:element    <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  co:element    <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  co:element    <http://da-rdf.library.cornell.edu/individual/b3652543> ;
  co:element    <http://da-rdf.library.cornell.edu/individual/b3652884> .

(Lynette) My understanding of the difference between Set and Bag is that Set cannot have repeating items, but Bag can.

Can set have repeating items?
Do we need to have repeating items?
Use Case: A professor creates a reading list which includes a work early in the semester and then repeats it later in the semester.

(Paolo) I apologize that should have been a co:Set to be clearer. For Bags you need to have an instance of Item to support for repeated elements. Once you flatten down to co:element the repeated items become one. The idea of the co:element (defined as chain) in general is to provide a shortcut to the elements. In that case we are interested in finding the existence (one of them), the repetitions are irrelevant at that level.

(Rebecca) I see on the description of the Collections Ontology that "the Collections Ontology (CO) defines unordered collections (Set and Bag) and ordered collections (or List)." It seems awkward to select an ontology in which the type of the collection has to change if ordering is added to an originally unordered collection, or vice versa. That seems to me an advantage of the ORE ontology.

(Paolo) that is a fair point but the description is not accurate, the approach has been described in the paper, here it is:

The relationships between the mathematical entities and those defined by Collections Ontology - and detailed in the following sections of the paper - can be defined as follow:

co:Set ⊂ Set

co:Bag ⊂ Bag

co:Set ∩ co:Bag = ∅

co:List = co:Bag ∩ Sequence

There are precise pragmatic reasons motivating this design choice. First of all, we chose not to model the mathematical identity function in CO for a specific reason: to allow one to use CO even when modelling scenarios that describe “collections in terms of the constructive boundaries of those plural entities that form themselves a whole". Therefore, it is possible to consider two sets of people, composed exactly by the same people, as two different research groups without contradictions. .... Second, from an implementation standpoint, the data structures managing co:Set and co:Bag are very different.

In other words, if you define a Bag and you add ordering you get a List. See axioms here: http://www.essepuntato.it/lode/owlapi/http://purl.org/co/#d4e499

Set is all another story though. That is correct.

(Rob) The repeating items case makes ORE very strange, as it means creating two proxies for the same resource such that it can be in the chain twice.

<x> a ore:Aggregation ;
ore:aggregates <a> ; // should be repeated at the end
ore:aggregates <b> ;
ore:aggregates <c> .

<p1> a ore:Proxy ;
ore:proxyFor <a> ;
ore:proxyIn <x> ;
iana:next <p2> .
<p2> a ore:Proxy ;
ore:proxyFor <b> ;
ore:proxyIn <x> ;
iana:next <p3> .
<p3> a ore:Proxy ;
ore:proxyFor <c> ;
ore:proxyIn <x> ;
iana:next <p4> .
<p4> a ore:Proxy ;
ore:proxyFor <a> ;
ore:proxyIn <x> .

(Rebecca) I don't actually find this so strange. If proxies are the means to specify relationships, such as sequencing, among the aggregated resources, then if an aggregated resource has more than one relationship to other resources, as in occurring at multiple positions in a sequence, it seems natural that it would have a proxy for each.

(Paolo) I do find it strange but not 'that strange'. In CO you can infer the top part so the co:element will have only three objects (with no repetition). But the actual declarative structure will list all of them.

Example 4-ore: A Virtual Collection as an unordered collection of items using ORE Ontology's Aggregation with multiple unordered items

Expand

title	Expand to see n-triples...

Code Block

language	none
title	n-triples

<http://localhost:3000/individual/vc255> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.openarchives.org/ore/terms/Aggregation> .
<http://localhost:3000/individual/vc255> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652730> .
<http://localhost:3000/individual/vc255> <http://www.openarchives.org/ore/terms/aggregates> <http://da-rdf.library.cornell.edu/individual/b3652234> .
<http://localhost:3000/individual/vc255> <http://www.openarchives.org/ore/terms/aggregates>

Code Block

language	none
title	Turtle

@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix co: <http://purl.org/co> . <http://localhost:3000/virtualcollection/changeme:155> a co:List ; co:size "4"^^xsd:nonNegativeInteger ; co:firstItem <http://localhost:3000/virtualcollection/item/changeme:156> ; co:item <http://localhost:3000/virtualcollection/item/changeme:156> ; co:item <http://localhost:3000/virtualcollection/item/changeme:157> ; co:item <http://localhost:3000/virtualcollection/item/changeme:158> ; co:item <http://localhost:3000/virtualcollection/item/changeme:159> ; co:lastItem <http://localhost:3000/virtualcollection/item/changeme:159> . <http://localhost:3000/virtualcollection/item/changeme:156> a co:ListItem ; co:index "1"^^xsd:positiveInteger ; co:itemContent

 <http://da-rdf.library.cornell.edu/individual/

b3652730>

b3652543> .

Code Block

language	none
title	Turtle using ORE ontology's Aggregation class

@prefix ore:     <http://www.openarchives.org/ore/terms/> .
@prefix iana:;
  co:nextItem     <http://localhost:3000/virtualcollection/item/changeme:157>www.iana.org/assignments/relation/> .
 
<http://localhost:3000/virtualcollection/item/changeme:157>individual/vc255> a coore:ListItemAggregation ;
  coore:index        "2"^^xsd:positiveIntegeraggregates <http://da-rdf.library.cornell.edu/individual/b3652730> ;
  coore:itemContentaggregates  <http://da-rdf.library.cornell.edu/individual/b3652234> ;
  co:nextItem     <http://localhost:3000/virtualcollection/item/changeme:158> .

 ore:aggregates <http://localhost:3000/virtualcollection/item/changeme:158> a co:ListItem ;
  co:index        "3"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652543> ;
  co:nextItem     <http://localhost:3000/virtualcollection/item/changeme:159> .

<http://localhost:3000/virtualcollection/item/changeme:159> a co:ListItem ;
  co:index        "4"^^xsd:positiveInteger ;
  co:itemContent  <http://da-rdf.library.cornell.edu/individual/b3652884> .

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 :

Comments

Comments as Free Form Text Annotation

da-rdf.library.cornell.edu/individual/b3652543> .

Expand

title	Reconciled Questions

Should Virtual Collection's type be a subclass of co:List instead of a co:List?
- Discussion:
  - If so, what is the type? Perhaps: 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 :
- ANSWER:
  - NO - from Rob in Ontology group
  - Reason - When only adding a few extra properties from other existing ontologies, you do not make a new subclass to formally specify that those properties are expected in the subclass. Only create a new subclass if new properties not existing in another ontology are required.

...

Comments

Comments as Free Form Text Annotation

Expand

title	Expand to see n-triples...

Code Block

language	none
title	n-triples

<http://localhost:3000/individual/vci165/comment/changeme:93> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#Annotation> .
<http://localhost:3000/individual/vci165/comment/changeme:93> <http://www.w3.org/ns/oa#hasTarget>

Expand

title	Expand to see n-triples...

Code Block

language	none
title	n-triples

<http://localhost:3000/virtualcollection/changeme:155/item/changeme:159individual/vci162> .
<http://localhost:3000/individual/vci165/comment/changeme:93> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>ns/oa#hasBody> <http://www.w3.org/ns/oa#Annotation>localhost:3000/individual/ab205> .
<http://localhost:3000/virtualcollection/changeme:155/item/changeme:159individual/vci165/comment/changeme:93> <http://www.w3.org/ns/oa#hasTarget>oa#annotatedBy> <http://localhost:3000/virtualcollection/item/changeme:156>vivo.cornell.edu/individual/individual24416> .
<http://localhost:3000/virtualcollection/changeme:155/item/changeme:159individual/vci165/comment/changeme:93> <http://www.w3.org/ns/oa#hasBody> <http://localhost:3000/annotations/bodies/3652730_changeme:93>oa#annotatedAt> "2014-07-21T12:00:00Z"^^xsd:dateTime .
<http://localhost:3000/virtualcollection/changeme:155/item/changeme:159individual/vci165/comment/changeme:93> <http://www.w3.org/ns/oa#annotatedBy>oa#motivatedBy> <http://vivowww.cornellw3.eduorg/individualns/individual24416>oa#commenting> .

<http://localhost:3000/individual/vci165/virtualcollectioncomment/changeme:155/item/changeme:159/comment/changeme:93>93/body> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3purl.org/ns/oa#annotatedAt> "2014-07-21T12:00:00Z"^^xsd:dateTimedc/dcmitype/Text> .
<http://localhost:3000/virtualcollectionindividual/changeme:155vci165/itemcomment/changeme:159/comment/changeme:93>93/body> <http://www.w3.org/ns/oa#motivatedBy>1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns2011/oa#commenting>content#ContentAsText> .

<http://localhost:3000/virtualcollectionindividual/changeme:155/item/changeme:159/vci165/comment/changeme:93/body> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>/body> <http://purlwww.w3.org/dc/dcmitype/Text>2011/content#chars> "This is my favorite book." .
<http://localhost:3000/virtualcollectionindividual/changeme:155/item/changeme:159/vci165/comment/changeme:93/body> <http://www.w3purl.org/dc/1999/02/22-rdf-syntax-ns#type>terms/format> "text/plain" .

Code Block

language	none
title	Turtle

Code Block

language	none
title	Turtle

@prefix rdf:      <http://www.w3.org/1999/

2011/content#ContentAsText>

02/22-rdf-syntax-ns#> .

<http://localhost:3000/virtualcollection/changeme:155/item/changeme:159/comment/changeme:93/body>

@prefix dcterms:  <http://

www

purl.

w3.

org/

2011

dc/

content#chars> "This is my favorite book." .

terms> .
@prefix dctypes:   <http://

localhost:3000/virtualcollection/changeme:155/item/changeme:159/comment/changeme:93/body>

purl.org/dc/dcmitype> .
@prefix cnt:      <http://

purl

www.w3.org/

dc

2011/

terms/format> "text/plain" .

@prefix rdfcontent#> .
@prefix oa:       <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms:  <http://purl.org/dc/terms> .
@prefix dctypes:   <http://purl.org/dc/dcmitype> .
@prefix cnt:      <http://www.w3.org/2011/content#> .
@prefix oa:       <http://www.w3.org/ns/oa> .
 /ns/oa> .
 
<http://localhost:3000/individual/cm93> a oa:Annotation ;
  oa:hasTarget <http://localhost:3000/individual/vci162> ;
  oa:hasBody <http://localhost:3000/individual/ab205> ;
  oa:annotatedBy <http://vivo.cornell.edu/individual/individual24416> ;
  oa:annotatedAt "2014-07-21T12:00:00Z"^^xsd:dateTime
  oa:motivatedBy oa:commenting .

<http://localhost:3000/virtualcollection/changeme:155/item/changeme:159/comment/changeme:93> a oa:Annotation ;
  oa:hasTarget <http://localhost:3000/virtualcollection/item/changeme:156> ;
  oa:hasBody <httpindividual/ab205> a dctypes:Text, cnt:ContentAsText ;
  cnt:chars      "This is my favorite book." ;
  dcterms:format "text/plain" .

...

URI Generation

BaseURI

Environment	Base URI
development	http://localhost:3000/individual/
testing	TBA
production	TBA

Identifier

_BASE_URI_ + _CONCEPT_ABBR_CODE_ + _GENERATED_NUMBER_

CONCEPT	ABBR_CODE	Example URI	Comments
Virtual Collection	vc	http://localhost:3000/individual/vc155
Virtual Collection Item	vci	http://localhost:3000/

...

individual/vci262
Comment	cm	http://localhost:3000/individual/cm394
Tag	tg	http://localhost:3000/

...

individual/tg328
Annotation Body	ab	http://localhost:3000/individual/ab325

QUESTIONS:

Is it best practice to use the format specified for identifier?
The alternative could be to use the URL for the webpage with a .nt extension if a webpage representation exists AND use the above format if a webpage does not exist.
OR force the webpage URL to match this format whenever possible AND continue to use the .nt extension to show the triples.
We can punt the final decision on this question until implementation is further along.

...

Access Thoughts

QUESTIONS:

...

NOTE: This doesn't really come into play until Use Case 1.2, but I want to think about the other access issues with this in mind.min

Page tree

Versions Compared

Old Version 36

New Version Current

Key

Virtual Collection's owner

Virtual Collection's metadata

Virtual Collection's list of items

Virtual Collection's list of items

Ordered Collection Examples

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

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

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

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

Unordered Collection Examples

Example 3-co: A Virtual Collection as an unordered collection of items using Collection Ontology's Bag with one item

Example 3-ore: A Virtual Collection as an unordered collection of items using ORE Ontology's Aggregation with one item

Example 4-co: A Virtual Collection as an unordered collection of items using Collection Ontology's Bag with multiple unordered items

Example 2: A Virtual Collection as a List with multiple ordered Items

Example 4-ore: A Virtual Collection as an unordered collection of items using ORE Ontology's Aggregation with multiple unordered items

Comments

Comments as Free Form Text Annotation

Comments

Comments as Free Form Text Annotation

URI Generation

BaseURI

Identifier

Access Thoughts