This document discusses AGROVOC, an agricultural vocabulary that has been converted to Linked Open Data. It provides over 580,000 terms in 20 languages and is a global standard for describing agricultural information. As Linked Open Data, AGROVOC is now linked to other important online resources through common identifiers, allowing it to connect over 200 datasets that use these standard vocabularies. This linking of data through common web identifiers is shown to be a cornerstone for an information management infrastructure in agricultural research and innovation.
1. AGROVOC – Linked Open Data A Corner Stone for an Information Management Infrastructure in Agricultural Research and Innovation Dr. Johannes Keizer Office ofKnowledge Exchange, Research and Extension Food andAgricultureOrganizationofthe UN Open Government in Practice ]init[ Brussels – 12th April 2011 Tappingthe potential ofLinked Open Data
2. We will promote research for food and agriculture, including research to adapt to, and mitigate climate change, and access to research results and technologies at national, regional and international levels. We will reinvigorate national research systems and will share information and best practices. We will improve access to knowledge. worldfoodsummit 2009
4. RING routemapto information nodes and gateways VocBench concepts and entitiesreferencetriples Cloud storagefor RDF data triples Tools LOD enabled software LOD Generator triplifier, concept and entityidentifier Data Services Webservices + APIsto triple stores agINFRA- the elements
5. AGROVOC 580,000 terms 40,000 concepts 20 languages (including Chinese andJapanese) Defactostandard all overtheworld in agriculturalinformationdescription Nowlinkedtoimportantotherresources
11. AGROVOC http://aims.fao.org/aos/agrovoc/c_7825 http://agris.fao.org/agris-search/search/display.do?f=1996/TR/TR96001.xml;TR9600026 Linking data through common URIs TOXIC SUBSTANCES UNBIS http://eurovoc.europa.eu/218754 Eurovoc http://unbisnet.un.org:8080/ipac20/ipac.jsp?session=128F308557F34.283092&profile=bib&uri=full=3100001~!685149~!1&ri=1&aspect=subtab124&menu=search&source=~!horizon http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:202:0011:0015:EN:PDF http://aims.fao.org/aos/agrovoc/c_12332 owl:sameAshttp://eurovoc.europa.eu/219871 skos: exact match UNBIS: Toxic Substances
12. Vocabularies and LOD Simply publishing your data as RDF does not link them to other data sets Creating this links by humans is interesting in detail, but unrealistic as mass processing Linking 2 standard vocabularies can link 200 datasets which use these standard vocabularies
13. AGROVOC Links after 3 weeks LOD Outlinks: GEMET-AGROVOC 1,198 RAMEAU-AGROVOC :700 Total Outlinks: 1898 Inlinks: AGROVOC-EUROVOC:1,297 AGROVOC-GEMET:1,198 AGROVOC-LCSH :1,093 AGROVOC-NAL: 13,390 AGROVOC-STW:1136 AGROVOC-RAMEAU:700 Total Inlinks:18,814
The mainintegrationworksthroughcommonsemanticsCore ofagINFRAtechnologyisaLODstoreofsharedencodedknowledgeorganizationsystemsan automaticmarkupto link structuredandunstructureddatasourcesthroughthissharedKnowledgeOrganizationsystemsSharing withinthe R.I.N.G.Partner registertheirservices, notechnicallimitationLOD – Wrapper for all participatingInstitutionsFor all registered services a „triplificationwrapper“ will besetupThe triplifierworkswith „agConceptsandagIdentities“ tocreatelinkeddataSteadilygrowing LOD ecosystemThe agINFRA LOD ecosystemoffers Webservices forthewww
Ifresources are marked up withsemanticallydefined and machinereadableconcepts, they can belinked and mashed up preciselyaswehaveseen in the examplefrom the BBC.In thisexamplewe start withan AGRIS record on Hazardouswaste, whichisindexedwith AGROVOC. Alreadynowwe can easily link to material indexedwithEurovoc, hereanexamplefromEuroLex. If the UNBIS thesaurus wouldberestructuredto a conceptscheme and publishedas LOD, related UN documentscouldbeattachedautomaticallyby the machine.
How does this work: A resource is connected with each concept URI in the web. The concepts between three vocabularies are having same literal which is connected with owl:sameAS/exactMatch relationship. As we are speakingaboutthesauri and notontologieswekept the relation tobechosenpurposelyvague. The conceptscouldbematchedwithowl:sameAS or the termscouldbematcheswith SKOS:exactMatch. A lotofdiscussion on thisisongoing