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Linked Open Data
Presented for the Penn Humanities Forum
by Corey A Harper
2013-04-11
Tools and techniques for putting
Metadata, Context, & Narrative
On the Web
@chrpr–[�ݺ�ߣshare]

2014-04-11 Harper - Penn Humanities Forum - LODLAM 2
The Web Becomes Semantic
●
Originally:
●
Metadata about “Web” things (documents)
●
Eventually:
●
Metadata about all sorts of things
●
And about relationships between things
●
TBL’s original vision (Weaving the Web – 1999)
●
Then: Focus on Machine Reasoning
●
Scientific American Article
●
Now: Focus on things & links
●
Reasoning & Inferencing less central

Semantic Web Terminology
●
Resource: Any “thing”
●
Class: Abstraction of a type of thing
●
Individual: An instance of a class
●
Property: An attribute of an individual
●Statement/Triple:
●
A Resource (subject)
●
A Property (predicate / verb)
●
A Value (object) - Nodes
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Graph: Visual Representation of statements
●
Ontology/Vocabulary: A domain specific collection
of classes and properties

Linked Open Data
●
Use URIs as names for things
●
Use HTTP URIs so that people can look up those
names.
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When someone looks up a URI, provide useful
information.
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Include links to other URIs. so that they can
discover more things.
http://www.w3.org/DesignIssues/LinkedData.html

Linked Data
●
Metadata as a Graph
●
Typed “things”, named by URIs
●
The relationships between those things,
also built on URIs
●
Ease of integration *across* data
sources – “merging graphs”

Publish Publish Publish!
http://www.ted.com/talks/tim_berners_lee_on_the_next_web.html

DBpedia
Structured Wikipedia Data
●
Partial basis in data entry conventions
●
InfoBox’s, and InfoBox Templates
●
Metadata Entry Format
●
Partial source of Ontology
●
Class Structure
●
Vocabulary Design

DBpedia
●
3.4 Million “things” described
●
Ontology based on “infoboxes”
●
1.5 million things classified
●
http://wiki.dbpedia.org/Ontology
●
Approx. 50,000 “Properties”
●
Approx. 1,200 defined in ontology

http://thinkbase.cs.auckland.ac.nz/start.jsp

Google Knowledge Graph

RelFinder
http://www.visualdataweb.org/relfinder.php

Linked Jazz
http://linkedjazz.org/network/

Social Networks of Archival Context
Image From: http://inkdroid.org/journal/2010/08/12/archival-context-on-the-web/

Linking Lives – Screenshots from P. Johnston

http://viewshare.org/

DM2E
http://dm2e.eu/

Pundit
Imagefrom:http://summit2013.lodlam.net/2013/04/03/pundit/

Annotations
●
The Pundit (thepund.it)
●
Hypothesis: Peer Review for the Web (hypthos.is)
●
Open Annotation Collaboration
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Distributed bibliographic control environment
●
Focus on identification over description
“In short, by treating values as non-literal resources and
assigning URIs to them we give ourselves (and others) the
hooks on which to hang further descriptions.” - Andy Powell

Context
Narrative
Story telling
The Library's story,
and the Archives story,
but also…

Users’ stories
Scholars' stories
Adding context through recombinant metadata

Scholars & Users Stories – Tim Sherratt
(@wragge)
Also: http://discontents.com.au/a-map-and-some-pins-open-data-and-unlimited-horizons/

Linked Data Based UI Design
For Boutique Collections

FuzzyWuzzy & SeatGeek!
FuzzyWuzzy–AwesomeLibraryfromSeatGeek
https://github.com/seatgeek/fuzzywuzzy
http://seatgeek.com/blog/dev/fuzzywuzzy-fuzzy-string-matching-in-python

�ݺ�ߣ courtesy of Doug Oard
University of Maryland

Reconciliation & NER
http://freeyourmetadata.org/
Watch for their book
http://www.amazon.com/Linked-Data-Libraries-Archives-Museums/dp/1856049647/

Open Refine RDF Skeleton

And onward...
• Rethinking UI Design
 Aggregate data from more sources
 Provide more context
• Building proofs of concept
• Improving Search Engine Optimization
(JSON-LD, Schema.org, RDFa, &c.)
• Use cases!
• Experimentation!

Thanks!
corey.harper@nyu.edu
212.998.2479
@chrpr

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