Introduction to Linked Data Linked Data: what cataloguers need to know #cigld CILIP Cataloguing and Indexing Group (CIG) 20 February 2015 Thomas Meehan [email protected] @orangeaurochs
Introduction to Linked Data
Jul 15, 2015
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Introduction to Linked Data
Linked Data: what cataloguers need to know #cigldCILIP Cataloguing and Indexing Group (CIG)
20 February 2015
Thomas [email protected] @orangeaurochs
Linked Open Data
Data
Linked
Open
linked open DATA
245 00 $a Models for decision :
$b a conference under the auspices of the United Kingdom Automation Council organised by the British Computer Society and the Operational Research Society /
$c edited by C.M. Berners-Lee.
260 __ $a London :
$b English Universities Press,
$c 1965.
300 __ $a x, 149 p. :
$b ill. ;
$c 23 cm.
504 __ $a Includes bibliographical references.
700 1_ $a Berners-Lee, C. M.
LINKED open data..
…LINKED open data
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr id="bib-author-row">
<th>Author:</th>
<td id="bib-author-cell">
<a href="/search?q=au%3ABerners-Lee%2C+C.+M.&qt=hot_author" title="Search for more by this author">C M Berners-Lee</a>;
<a href="/search?q=au%3ABritish+Computer+Society.&qt=hot_author" title="Search for more by this author">British Computer Society.</a>;
<a href="/search?q=au%3AInstitution+of+Electrical+Engineers.&qt=hot_author" title="Search for more by this author">Institution of Electrical Engineers.</a>;
<a href="/search?q=au%3AOperational+Research+Society.&qt=hot_author" title="Search for more by this author">Operational Research Society.</a?
</td>
</tr>
<tr id="bib-publisher-row">
<th>Publisher:</th>
<td id="bib-publisher-cell">London : English Universities Press, [1965]</td>
</tr>
…
</table>
linked OPEN data
The Web of Data
• Use URIs as names for things
• Use HTTP URIs so that people can look up those names.
• When someone looks up a URI, provide useful information, using the standards (RDF, SPARQL)
• Include links to other URIs so that they can discover more things.
Tim Berners-Lee (2006)
English sentence
Brideshead Revisited was written by Evelyn Waugh.
Entities and Relationship
Brideshead revisited created by Evelyn Waugh
Adding URIs: Brideshead revisited
http://id.loc.gov/authorities/names/no97080492
created by Evelyn Waugh
Adding URIs: Waugh
http://id.loc.gov/authorities/names/no97080492
created by
http://id.loc.gov/authorities/names/n79049248
Adding URIs: creator
http://id.loc.gov/authorities/names/no97080492
http://purl.org/dc/terms/creator
http://id.loc.gov/authorities/names/n79049248
RDF Statement
<http://id.loc.gov/authorities/names/no97080492>
<http://purl.org/dc/terms/creator>
<http://id.loc.gov/authorities/names/n79049248> .
RDF (Turtle)
@prefix lc_names: <http://id.loc.gov/authorities/names/> .
@prefix dct: <http://purl.org/dc/terms/> .
lc_names:no97080492 dct:creator lc_names:n79049248 .
Brideshead Revisited
@prefix lc_names: <http://id.loc.gov/authorities/names/> .
@prefix lc_languages: <http://id.loc.gov/vocabulary/languages> .
@prefix dct: <http://purl.org/dc/terms/> .
lc_names:no97080492 dct:creator lc_names:n79049248 ;
dct:created "1945" ;
dct:extent "1 volume" ;
dct:language lc_languages:eng ;
dct:title "Brideshead revisited" ;
dct:type <http://purl.org/dc/dcmitype/Text> .
Brideshead Revisited
@prefix lc_names: <http://id.loc.gov/authorities/names/> .
@prefix lc_languages: <http://id.loc.gov/vocabulary/languages/> .
@prefix dct: <http://purl.org/dc/terms/> .
lc_names:no97080492 dct:creator lc_names:n79049248 ;
dct:created "1945" ;
dct:extent "1 volume" ;
dct:language lc_languages:eng ;
dct:title "Brideshead revisited" ;
dct:type <http://purl.org/dc/dcmitype/Text> .
LC Name Authority for Waugh (excerpt)
@prefix lc_names: <http://id.loc.gov/authorities/names/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix mads: <http://www.loc.gov/mads/rdf/v1#> .
@prefix viaf: <http://viaf.org/viaf/sourceID/> .
lc_names:n79049248 rdf:type mads:PersonalName ;
rdf:type mads:Authority ;
mads:authoritativeLabel "Waugh, Evelyn, 1903-1966"@en ;
mads:hasExactExternalAuthority viaf:68937142 .
RDF SerialisationsN Triples
<http://id.loc.gov/authorities/names/n79049248> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.loc.gov/mads/rdf/v1#PersonalName>. <http://id.loc.gov/authorities/names/n79049248> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.loc.gov/mads/rdf/v1#Authority>. <http://id.loc.gov/authorities/names/n79049248> <http://www.loc.gov/mads/rdf/v1#authoritativeLabel> "Waugh, Evelyn, 1903-1966"@en. <http://id.loc.gov/authorities/names/n79049248> <http://www.loc.gov/mads/rdf/v1#hasExactExternalAuthority> <http://viaf.org/viaf/sourceID/68937142>.
RDF SerializationsTurtle and N3
@prefix lc_names: <http://id.loc.gov/authorities/names/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix mads: <http://www.loc.gov/mads/rdf/v1#> .
@prefix viaf: <http://viaf.org/viaf/sourceID/> .
lc_names:n79049248 rdf:type mads:PersonalName ;
rdf:type mads:Authority ;
mads:authoritativeLabel "Waugh, Evelyn, 1903-1966"@en ;
mads:hasExactExternalAuthority viaf:68937142 .
RDF SerialisationRDF/XML
<?xml version="1.0"?>
<rdf:RDF xmlns:lc_names="http://id.loc.gov/authorities/names/" xmlns:mads="http://www.loc.gov/mads/rdf/v1#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:viaf="http://viaf.org/viaf/sourceID/">
<mads:PersonalName rdf:about="http://id.loc.gov/authorities/names/n79049248">
<rdf:type rdf:resource="http://www.loc.gov/mads/rdf/v1#Authority" />
<mads:authoritativeLabel xml:lang="en">Waugh, Evelyn, 1903-1966</mads:authoritativeLabel>
<mads:hasExactExternalAuthority rdf:resource="http://viaf.org/viaf/sourceID/68937142" />
</mads:PersonalName>
</rdf:RDF>
RDF SerialisationRDF/JSON
{
"http://id.loc.gov/authorities/names/n79049248": {
"http://www.loc.gov/mads/rdf/v1#hasExactExternalAuthority": [
{
"type": "uri",
"value": "http://viaf.org/viaf/sourceID/68937142"
}
],
"http://www.w3.org/1999/02/22-rdf-syntax-ns#type": [
{
"type": "uri",
"value": "http://www.loc.gov/mads/rdf/v1#PersonalName"
},
{
"type": "uri",
"value": "http://www.loc.gov/mads/rdf/v1#Authority"
}
],
"http://www.loc.gov/mads/rdf/v1#authoritativeLabel": [
{
"lang": "en",
"type": "literal",
"value": "Waugh, Evelyn, 1903-1966"
}
]
}
}
RDF SerialisationRDFa
<div xmlns="http://www.w3.org/1999/xhtml"
prefix="
rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns#
mads: http://www.loc.gov/mads/rdf/v1#
rdfs: http://www.w3.org/2000/01/rdf-schema#"
>
<div typeof="mads:PersonalName" about="http://id.loc.gov/authorities/names/n79049248">
<div rel="rdf:type" resource="http://www.loc.gov/mads/rdf/v1#Authority"></div>
<div property="mads:authoritativeLabel" xml:lang="en" content="Waugh, Evelyn, 1903-1966"></div>
<div rel="mads:hasExactExternalAuthority" resource="http://viaf.org/viaf/sourceID/68937142"></div>
</div>
</div>
Microdata, RDFa, Schema.org
OCLC Worldcat uses embedded Schema.org:
http://www.worldcat.org/oclc/221944758
Schema.org RDFa on Worldcat
Schema.org RDFa on Worldcat
Schema.org RDFa on Worldcat<div xmlns="http://www.w3.org/1999/xhtml" id="microdata" prefix="xml: http://www.w3.org/XML/1998/namespace skos: http://www.w3.org/2004/02/skos/core# library: http://purl.org/library/ gen-ont: http://www.w3.org/2006/gen/ont# pto: http://www.productontology.org/id/ madsrdf: http://www.loc.gov/mads/rdf/v1# void: http://rdfs.org/ns/void# schema: http://schema.org/ oclc: http://www.worldcat.org/oclc/ rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# umbel: http://umbel.org/umbel# bibo: http://purl.org/ontology/bibo/ foaf: http://xmlns.com/foaf/0.1/ cc: http://creativecommons.org/ns# awol: http://bblfish.net/work/atom-owl/2006-06-06/# owl: http://www.w3.org/2002/07/owl# dct: http://purl.org/dc/terms/ blterms: http://www.bl.uk/schemas/bibliographic/blterms# rdfs: http://www.w3.org/2000/01/rdf-schema#"><div resource="http://www.worldcat.org/oclc/221944758" typeof="http://schema.org/Book"><<a href="http://www.worldcat.org/oclc/221944758">http://www.worldcat.org/oclc/221944758</a>><table border="0" cellspacing="0"><tr><td><a href="http://purl.org/library/oclcnum">library:oclcnum</a></td><td>"<span property="library:oclcnum">221944758</span>"</td></tr><tr><td><a href="http://purl.org/library/placeOfPublication">library:placeOfPublication</a></td><td><div property="library:placeOfPublication" typeof="http://schema.org/Place"><table border="0" cellspacing="0"><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Place" property="rdf:type" resource="http://schema.org/Place">schema:Place</a></td></tr><tr><td><a href="http://schema.org/Place">schema:name</a></td><td>"<span property="schema:name">London</span>"</td></tr></table></div></td></tr><tr><td><a href="http://purl.org/library/placeOfPublication">library:placeOfPublication</a></td><td><div property="library:placeOfPublication" resource="http://id.loc.gov/vocabulary/countries/enk" typeof="http://schema.org/Country"><<a href="http://id.loc.gov/vocabulary/countries/enk">http://id.loc.gov/vocabulary/countries/enk</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Country" property="rdf:type" resource="http://schema.org/Country">schema:Country</a></td></tr></table></div></td></tr><tr><td><a href="http://www.w3.org/2002/07/owl#sameAs">owl:sameAs</a></td><td><<a href="info:oclcnum/221944758" property="owl:sameAs" resource="info:oclcnum/221944758">info:oclcnum/221944758</a>></td></tr><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Book" property="rdf:type" resource="http://schema.org/Book">schema:Book</a></td></tr><tr><td><a href="http://schema.org/Book">schema:about</a></td><td><div property="schema:about" typeof="http://schema.org/Intangible"><table border="0" cellspacing="0"><tr><td><a href="http://www.loc.gov/mads/rdf/v1#isIdentifiedByAuthority">madsrdf:isIdentifiedByAuthority</a></td><td><<a href="http://id.loc.gov/authorities/subjects/sh85042288" property="madsrdf:isIdentifiedByAuthority" resource="http://id.loc.gov/authorities/subjects/sh85042288">http://id.loc.gov/authorities/subjects/sh85042288</a>></td></tr><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Intangible" property="rdf:type" resource="http://schema.org/Intangible">schema:Intangible</a></td></tr><tr><td><a href="http://schema.org/Intangible">schema:name</a></td><td>"<span property="schema:name">Electronic data processing.</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:about</a></td><td><div property="schema:about" resource="http://dewey.info/class/658.4033/" typeof="http://schema.org/Intangible"><<a href="http://dewey.info/class/658.4033/">http://dewey.info/class/658.4033/</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Intangible" property="rdf:type" resource="http://schema.org/Intangible">schema:Intangible</a></td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:about</a></td><td><div property="schema:about" resource="http://id.worldcat.org/fast/1081992" typeof="http://schema.org/Intangible"><<a href="http://id.worldcat.org/fast/1081992">http://id.worldcat.org/fast/1081992</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Intangible" property="rdf:type" resource="http://schema.org/Intangible">schema:Intangible</a></td></tr><tr><td><a href="http://schema.org/Intangible">schema:name</a></td><td>"<span property="schema:name">Public administration--Data processing</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:about</a></td><td><div property="schema:about" resource="http://id.worldcat.org/fast/906956" typeof="http://schema.org/Intangible"><<a href="http://id.worldcat.org/fast/906956">http://id.worldcat.org/fast/906956</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Intangible" property="rdf:type" resource="http://schema.org/Intangible">schema:Intangible</a></td></tr><tr><td><a href="http://schema.org/Intangible">schema:name</a></td><td>"<span property="schema:name">Electronic data processing</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:about</a></td><td><div property="schema:about" typeof="http://schema.org/Intangible"><table border="0" cellspacing="0"><tr><td><a href="http://www.loc.gov/mads/rdf/v1#isIdentifiedByAuthority">madsrdf:isIdentifiedByAuthority</a></td><td><<a href="http://id.loc.gov/authorities/subjects/sh2008110032" property="madsrdf:isIdentifiedByAuthority" resource="http://id.loc.gov/authorities/subjects/sh2008110032">http://id.loc.gov/authorities/subjects/sh2008110032</a>></td></tr><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Intangible" property="rdf:type" resource="http://schema.org/Intangible">schema:Intangible</a></td></tr><tr><td><a href="http://schema.org/Intangible">schema:name</a></td><td>"<span property="schema:name">Public administration--Data processing.</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:contributor</a></td><td><div property="schema:contributor" resource="http://viaf.org/viaf/149407214" typeof="http://schema.org/Organization"><<a href="http://viaf.org/viaf/149407214">http://viaf.org/viaf/149407214</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.loc.gov/mads/rdf/v1#isIdentifiedByAuthority">madsrdf:isIdentifiedByAuthority</a></td><td><<a href="http://id.loc.gov/authorities/names/n79056431" property="madsrdf:isIdentifiedByAuthority" resource="http://id.loc.gov/authorities/names/n79056431">http://id.loc.gov/authorities/names/n79056431</a>></td></tr><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Organization" property="rdf:type" resource="http://schema.org/Organization">schema:Organization</a></td></tr><tr><td><a href="http://schema.org/Organization">schema:name</a></td><td>"<span property="schema:name">British Computer Society.</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:contributor</a></td><td><div property="schema:contributor" resource="http://viaf.org/viaf/130073090" typeof="http://schema.org/Organization"><<a href="http://viaf.org/viaf/130073090">http://viaf.org/viaf/130073090</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.loc.gov/mads/rdf/v1#isIdentifiedByAuthority">madsrdf:isIdentifiedByAuthority</a></td><td><<a href="http://id.loc.gov/authorities/names/n85076053" property="madsrdf:isIdentifiedByAuthority" resource="http://id.loc.gov/authorities/names/n85076053">http://id.loc.gov/authorities/names/n85076053</a>></td></tr><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Organization" property="rdf:type" resource="http://schema.org/Organization">schema:Organization</a></td></tr><tr><td><a href="http://schema.org/Organization">schema:name</a></td><td>"<span property="schema:name">Operational Research Society.</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:contributor</a></td><td><div property="schema:contributor" resource="http://viaf.org/viaf/137135158" typeof="http://schema.org/Organization"><<a href="http://viaf.org/viaf/137135158">http://viaf.org/viaf/137135158</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.loc.gov/mads/rdf/v1#isIdentifiedByAuthority">madsrdf:isIdentifiedByAuthority</a></td><td><<a href="http://id.loc.gov/authorities/names/n79063901" property="madsrdf:isIdentifiedByAuthority" resource="http://id.loc.gov/authorities/names/n79063901">http://id.loc.gov/authorities/names/n79063901</a>></td></tr><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Organization" property="rdf:type" resource="http://schema.org/Organization">schema:Organization</a></td></tr><tr><td><a href="http://schema.org/Organization">schema:name</a></td><td>"<span property="schema:name">Institution of Electrical Engineers.</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:contributor</a></td><td><div property="schema:contributor" resource="http://viaf.org/viaf/36887201" typeof="http://schema.org/Person"><<a href="http://viaf.org/viaf/36887201">http://viaf.org/viaf/36887201</a>><table border="0" cellspacing="0"><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Person" property="rdf:type" resource="http://schema.org/Person">schema:Person</a></td></tr><tr><td><a href="http://www.w3.org/2000/01/rdf-schema#label">rdfs:label</a></td><td>"<span property="rdfs:label">Berners-Lee, C. M.</span>"</td></tr></table></div></td></tr><tr><td><a href="http://schema.org/Book">schema:datePublished</a></td><td>"<span property="schema:datePublished">1965</span>"</td></tr><tr><td><a href="http://schema.org/Book">schema:inLanguage</a></td><td>"<span property="schema:inLanguage">en</span>"</td></tr><tr><td><a href="http://schema.org/Book">schema:name</a></td><td>"<span property="schema:name">Models for decision : a conference under the auspices of the United Kingdom Automation Council organised by the British Computer Society and the Operational Research Society</span>"</td></tr><tr><td><a href="http://schema.org/Book">schema:numberOfPages</a></td><td>"<span property="schema:numberOfPages">149</span>"</td></tr><tr><td><a href="http://schema.org/Book">schema:publisher</a></td><td><div property="schema:publisher" typeof="http://schema.org/Organization"><table border="0" cellspacing="0"><tr><td><a href="http://www.w3.org/TR/rdf-schema/#ch_type">rdf:type</a></td><td><a href="http://schema.org/Organization" property="rdf:type" resource="http://schema.org/Organization">schema:Organization</a></td></tr><tr><td><a href="http://schema.org/Organization">schema:name</a></td><td>"<span property="schema:name">English Universities Press</span>"</td></tr></table></div></td></tr></table></div></div>
Worldcat Schema.org data for a book
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix schema: <http://schema.org/> .
@prefix worldcat: <http://www.worldcat.org/oclc/> .
@prefix library: <http://purl.org/library/> .
@prefix viaf: <http://viaf.org/viaf/> .
@prefix lc_authorities: <http://id.loc.gov/authorities/names/> .
@prefix mads: <http://www.loc.gov/mads/rdf/v1#> .
worldcat:221944758
rdf:type schema:Book;
library:oclcnum "221944758";
schema:name "Models for decision : a conference under the auspices of the United Kingdom Automation Council organised by the British Computer Society and the Operational Research Society";
library:placeOfPublication _:1;
schema:publisher _:4 .
schema:datePublished "[1965]";
schema:numberOfPages "149";
schema:contributor viaf:149407214;
schema:contributor viaf:130073090;
schema:contributor viaf:137135158;
schema:contributor viaf:36887201;
_:1 rdf:type schema:Place;schema:name "London :" .
_:4 rdf:type schema:Organization;schema:name "English Universities Press" .
viaf:149407214rdf:type schema:Organization;madsrdf:isIdentifiedByAuthority lc_authorities:n79056431;schema:name "British Computer Society." .
viaf:130073090rdf:type schema:Organization;madsrdf:isIdentifiedByAuthority lc_authorities:n85076053;schema:name "Operational Research Society." .
viaf:137135158rdf:type schema:Organization;madsrdf:isIdentifiedByAuthority lc_authorities:n79063901;schema:name "Institution of Electrical Engineers." .
viaf:36887201rdf:type schema:Person;schema:name "Berners-Lee, C. M." .
Lots of Ways To Do It
@prefix schema: <http://schema.org/> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix viaf: <http://viaf.org/viaf/> .
@prefix rdau: <http://rdaregistry.info/Elements/u/> .
@prefix cam: <http://data.lib.cam.ac.uk/id/entity/> .
@prefix bnb_person: <http://bnb.data.bl.uk/id/person/> .
@prefix foaf: <http://xmlns.com/foaf/spec/#> .
example:book0001 dct:creator cam:cambrdgedb_eeacef63d900c2acffc3daa400f3d4e4 .
example:book0001 dct:creator bnb_person:WaughEvelyn1903-1966 .
example:book0001 schema:creator viaf:68937142 .
example:book0001 rdau:#P60672 viaf:68937142 .
example:book0001 dct:creator lc_names:n79049248 .
example:book0001 dct:creator _:bnode001 .
_:bnode001 foaf:name "Waugh, Evelyn, 1903-1966" .
example:book0001 example:author example:author0001
Blank Nodes
@prefix lc_names: <http://id.loc.gov/authorities/names/> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/spec/#> .
lc_names:no97080492 dct:creator _:bnode01 .
_:bnode01 a foaf:Person .
_:bnode01 foaf:name "Evelyn Waugh" .
lc_names:no97080492 dc:creator [
a foaf:Person ;
foaf:name "Evelyn Waugh"
] .
Introduction to Linked Data
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix bibo: <http://purl.org/ontology/bibo/> .
cigld_intro dct:creator _:bnode001 ;
dct:created "2015" ;
dct:title "Introduction to Linked Data" ;
dct:isPartOf _:bnode003 .
_:bnode001 a foaf:person ;
foaf:name "Thomas Meehan" ;
foaf:mbox <[email protected]> ;
foaf:account _:bnode002 .
_:bnode002 a foaf:OnlineAccount ;
foaf:accountServiceHomepage "https://twitter.com/" ;
foaf:accountName "@orangeaurochs" .
_:bnode003 a bibo:Series ;
dct:title "Linked data: what cataloguers need to know" .
References
• Worldcat record for Models for decision / C. Berners-Lee. http://www.worldcat.org/title/models-for-decision-a-conference-under-the-auspices-of-the-united-kingdom-automation-council-organised-by-the-british-computer-society-and-the-operational-research-society/oclc/221944758
• What is open data? / The Open Data Institute. http://theodi.org/guides/what-open-data
• Linked Data : design issues / Tim Berners-Lee. http://www.w3.org/DesignIssues/LinkedData
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