loc-chronicling-map / docs / presentation.otl

Eric Rochester d438598 















































































































introduction
the vision
	http://www.foundation3d.com/gallery/data/506/medium/Terminator_Eyes.jpg
	human-readable web
	machine-readable web
break it apart
	http://blogs.ecs.soton.ac.uk/webteam/2011/07/17/linked-data-vs-open-data-vs-rdf-data/
	http://blogs.ecs.soton.ac.uk/webteam/files/2011/07/LOD-Ven1-e1310728709580.jpg
	*linked* data
		an approach
	*open* data
		a policy
	rdf *data*
		a technology, a data structure, a way of modeling knowledge
starry, starry night
	: This isn't all or nothing.
	http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/
	http://www.universetoday.com/wp-content/uploads/2008/10/m45-580x357.jpg
		1.	**open** license
		2.	**structured** format (excel, not image)
		3.	**non-proprietary** format (csv, not excel)
		4.	**HTTP URIs** to identify things
		5.	**link** to other data
the universe
	http://richard.cyganiak.de/2007/10/lod/imagemap.html
rdf
	first a way of looking at and organizing data
		xml => hierarchical
			a tree
			an org chart
		rdf => graph
			what's that?
				http://www.openarchives.org/ore/1.0/datamodel#InterAggr
				http://www.openarchives.org/ore/1.0/datamodel-images/Proxy.jpg
			labelled nodes
			directed, labelled links
	everything is expressed in simple statements
		subject
		predicate
		object
	shared vocabularies
		foaf
			http://xmlns.com/foaf/spec/
		dublin core
			http://dublincore.org/documents/dces/
		as much as possible
	this isn't about formats, necessarily
		xml is a way of looking at data and also a format
		xml can be format for rdf (rdf/xml)
		but there's also
			n3
			turtle
			others
	kind of technical. what do you need to remember?
		simple, SVO statements
		shared vocabularies
exercise
	subject
		http://search.lib.virginia.edu/catalog/u830526
		http://books.google.com/books?id=ZAmmGtQ9xAQC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
	data modelling
		excel database? represent a complex table in excel?
		create a new database?
		define a new xml schema or extend one (e.g., TEI)?
		it's just asking a few questions
			what are we describing?
			what objects?
			what attributes?
			what relationships?
			no hard and fast answers, depends on what you want to do with the data
	ask them: for this?
		NB: draw the graph
		original work
			title
			author
			date
			publisher
			pages
		secondary work?
			title
			author
			editor/holder
			date
			location?
			veracity?
	resources
		http://viaf.org/
			search: pickard
				http://viaf.org/viaf/395814/
				http://viaf.org/viaf/395814/rdf.xml
			search: hawthorne
				http://viaf.org/viaf/44435463/
				http://viaf.org/viaf/44435463/rdf.xml
				notice
					owl:sameAs links
					skos:exactMatch links
		http://dbpedia.org/
			http://dbpedia.org/sparql
			http://dbpedia.org/page/Nathaniel_Hawthorne
		http://socialarchive.iath.virginia.edu/
		< SPARQL query:
		< PREFIX foaf: <http://xmlns.com/foaf/0.1/>
		< PREFIX arch: <http://purl.org/archival/vocab/arch#>
		< 
		< SELECT ?s ?p ?o WHERE {
		<   ?s foaf:name "Hawthorne, Nathaniel, 1804-1864." . 
		<   ?s ?p ?o .
		< }
			notice who hawthorne cooresponded with
			notice the link to viaf
diy
	often the data isn't really open or easily accessible
	http://wraggelabs.com/
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
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