FIXME - Iowa work to support performant lookups when coupled with Samvera (aka Hydra) Community Linked Data Support
Overview
The University of Iowa primarily working on the design and implementation of an support infrastructure layer for an eventual ecosystem of Linked Open Data servers and systems. Given the somewhat immature nature of currently deployed LOD resources (i.e., offline SPARQL endpoints), the project decided that it was advisable to deploy our own services for the various LOD resources. This allowed us to
- make reasonable assumptions regarding resource availability,
- control performance characteristics, since we controlled the hardware, and
- control the nature of the data returned to queries.
The work done regarding this last point included, tuning the rank order of results, the specificity of what comprised a match to a user query, and what data were returned. In particular, we were able to inject an additional triple indicating a particular entity's rank in the results - something not present in the underlying triplestore.
Authorities
Our deployment process became regularized to the extent that a number of authority sources were included:
- Agrovoc (agricultural concepts)
- DBpedia (general knowledge)
- FAST (general subject headers from OCLC, derived from LoC subject headers)
- GeoNames (places in the real world)
- Getty (content relating to artistic works)
- AAT (concepts)
- ULAN (persons and organizations)
- TGN (places)
- Library of Congress
- Genre
- Name
- Subject
- MeSH (NLM medical subject headings)
- VIAF (authority cross-walks)
All of these services are available at http://services.ld4l.org/ld4l_services/index.jsp.
