Download - DHWI Linked Open Data - Show and Tell
What is Linked Open Data? Data published by exis0ng internet protocols that use a URI (Unique Resource Indicator) as the primary discoverable en0ty for a resource (e.g. person, object, web page, etc.) THE FIVE STARS OF LOD: ★ make your stuff available on the Web (whatever format) under an open license ★★ make it available as structured data (e.g., Excel instead of image scan of a table) ★★★ use non-‐proprietary formats (e.g., CSV instead of Excel) ★★★★ use URIs to iden0fy things, so that people can point at your stuff ★★★★★ link your data to other data to provide context
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What is it good for (HUH!)? Making your data more discoverable and useful by everybody Making the web machine-‐readable at a more granular level Allowing for more sophis0cated queries using inference Connec0ng your data to other people’s data Examples: hPp://exhibi0ons.europeana.eu/, hPp://pelagios-‐project.blogspot.com/
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Modeling and Expressing Using established and/or custom ontologies Using RDF (Resource Descrip0on Framework) RDF Triples:
For example: A URI that represents the person Georgina has the name Georgina Goodlander <hPp://countedshadows.com/wordpress#> foaf:hasName “Georgina Goodlander” The person Georgina in this URI Is the same thing as The person Georgina in this URI <hPp://countedshadows.com/wordpress#> skos:exactMatch <hPp://dbpedia.org/resource/Goodlander_G>
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Prepping Data
hPps://github.com/OpenRefine
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Steps to PublicaKon Export data as RDF Publish on the web Celebrate!
hPp://linkeddatabook.com/edi0ons/1.0/#htoc61
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Resources & Free Stuff to Use! Class Syllabus & Wiki: hPp://lod4h.pbworks.com #lod4h Open Refine for cleaning data and assigning RDF proper0es: hPps://github.com/OpenRefine Protégé for crea0ng and edi0ng ontologies: hPps://github.com/OpenRefine Data Hub for finding other open data sets: hPp://datahub.io/
Challenges? Few exis0ng examples of applica0on Limita0ons of established ontologies Conceptualizing messy data is hard Daun0ng scale Developing and maintaining automa0on and workflow Time and resources
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