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The GACS Project Semantics for Open Data
Caterina Caracciolo
FAO
GACS??
= Global Agriculture Concept Scheme
• To make a common repository of terminological and conceptual information in agriculture
• To achieve efficiency of scale by maintaining core concepts in cooperation
How global?
Why should all this be interesting? #1
Vocabularies are used in concrete applications to describe datasets, pieces of data
Why should all this be interesting? #2
Both vocabularies and data can be linked -> more data getting closer to grasp
– E.g. AGROVOC linked to 16, EUROVOC, GEMET, GeoNames, Wikipedia, LCSH, ...
Estimated overlap between AGROVOC, NALT, CABT
Where are we now?
• First prototype, Alpha 1, internal
• Formed by mapping a core of 10,000 concepts from each vocabulary – Info from matched concepts is aggregated – only Only
exact match considered
• Result: ~ 15,000 concepts, ~ 400,000 terms
GACS Demo Alpha
Highlights
• Temporary URIs now
• All RDF-SKOS
• SKOSMOS for visualization
• VocBench for data maintenance
Something to consider...
Different in concept granularity
AGROVOC: [animal oil], [animal fats]
NALT: [animal fats and oils]
Modelling
• Common names and scientific names are different things? Or different names for the same things?
• E.g. Salmo salar, salmo carpio, salmo ferox - salmon
References
• Reports from GACS:
http://aims.fao.org/community/agrovoc/blogs/phase-one-gacs-approved-read-reports
• To follow progress, check out http://aims.fao.org and subscribe to the user communit