1. Publishing and Using
Linked Open Data
Richard J. Urban, Ph.D.
School of Library and Information Studies
Florida State University
2. January 10, 2013
• 9-10:30 am Class Session: Publishing Linked Data
& Linked Data Applications
• 10:30-10:45 am break
• 10:45-Noon Class Session: Linked Open Data
• Noon- 1:00 pm Lunch
• 1:00-3:00 pm Class Session: Open Project Studio
• 3:00-3:15 pm Break
• 3:15-5:00 pm Class Session: Open Project Studio
• 5:30-7:30 pm DHWI Banquet
Humanities Plain and Simple
Location: Colony Ballroom 2203, Stamp Student Union
5. Connect to Existing Data
• SIMILE RDFizers
• D2RQ non-RDF relational data to RDF
6. Publish Files
• What’s the right syntax for your audience?
• How to version instance and ontology
• Thinking about URIs
– URIs that follow your classes
– Not based on underlying software
– Designed to persist
– URIs for resources vs. URIs for data
7. Triplestores: Questions to ask
• What methods can be used to store data?
– In Memory, SQL,mySQL, Postgres, etc.
• What level of expressivity is supported?
– RDFs, OWL Lite, OWL DL, etc.
– Reasoner support
• What rule languages are supported?
– SWRL, etc.
• Support for contexts/named graphs
• What does the API support?
12. Linked Open Data Criteria
★ Available on the web (whatever format), but
with an open license
★★ Available as machine-readable structured data
(e.g. excel instead of image scan of a table)
★★★ as (2) plus non-proprietary format (e.g. CSV
instead of excel)
★★★★ All the above plus, Use open standards from
W3C (RDF and SPARQL) to identify things, so
that people can point at your stuff
★★★★★ All the above, plus: Link your data to other
people’s data to provide context
• Risk Management
• What’s your risk tolerance?
– Tolerance of your institution?
• Not saying anything about your data IP
isn’t much better than a restrictive license.
14. Licensing Data
• Open Data Commons
• Creative Commons 0
15. Humanities Data Citation Practices
• Where do we stand?
• How to best give attribution when we use
triples from another source?
– Published documentation
– Provenance metadata
• What does this attach too?
• DCMI Provenance Metadata
• W3C Provenance WG
16. For the long run
• DH Data Curation Handbook - Policy,
• How will data be maintained over the long
• Clear licenses can facilitate preservation.
17. Economics of Linked Data
• How to adapt Linked Data to closed
– Make identifiers publically available.
– Provide some limited information when the
URI is used.
– Release taxonomies/vocabularies as separate