A brief overview of Controlled Vocabularies in OregonDigital's Hydra system. Presented 1/23/2014.

1. Controlled Vocabularies
with RDF

2. <http://oregondigital.
org/resource/pid123>
“A Thing About Hydra”
dct:title
dct:subject
“Hydra”

3. <http://oregondigital.
org/resource/pid123>c
“A Thing About Hydra”
dct:title
dct:subject
<http://id.loc.
gov/authorities/subjects/sh850632
83>
skos:prefLabel
skos:broader
“Hydra”@en
skos:narrower

4. Features
➢ Fetch/Cache Linked Data
➢ StrictVocabularies
➢ List Terms (drop down menus)
➢ QuestioningAuthority Integration

5. Adding Vocabs
➢ Register Vocabulary
➢ URI Namespace
➢ ‘Source’ RDF
➢ Generate Vocabs
➢ Rake Task (gen_vocabs)
➢ use_vocabulary in Ruby Class
➢ Optionally: Implement Custom QA

6. Vocabs in Oregon Digital
➢
➢
➢
➢
➢
DCMI Type
LCSH
ISO 639 (Languages)
Geonames
Rights Statements
➢
➢
➢
➢
CC Licenses
CC Public Domain
Europeana
Local/Custom
➢ Getty AAT (as of Tues.)

7. Next Steps
➢ Indexing Complex Graphs
➢ Merge into ActiveFedora/Gemify
➢ Establish Recommended Practices
➢ Toolkits for Vocabulary Maintenance

8. Demo Gist
http://bit.ly/hydra-vocabs