AGROVOC Thesaurus

• 1980s: developed as multilingual structured thesaurus for agricultural terminology (“rice”)

• 2000-2009: parallel effort to express thesaurus as hierarchy of OWL classes

• 2009+: converted into SKOS-XL• Terms translated into more than fifteen

languages

Use case scenario

• An indexer creating a bibliographic record uses AGROVOC Agrotagger Web service to search on the name of a fish in Arabic.

• Retrieves related synonyms and scientific names for the fish

• Pastes into the record

Topics of AGROVOC

• SW.CROSS-LINKING-VOCABS: facilitates vocabulary federation– “easier to express alignments with other agricultural

thesaurri in an interoperable and reusable way”• SW.LINKING: links between AGROVOC and data

using AGROVOC• LLD.SKOS-MULTILINGUAL• Navigating concept schemes (actually a

requirement of SKOS)

FAO Authority Description Concept Scheme

Authority control lists

• Concept-based system for representing traditional authority control lists– for Corporate Bodies, Conferences, Series, Journals,

Projects– Labels in 15 languages: both preferred and non-

preferred forms– Subjects, concept-to-concept relationships,

geoographic information…– Authority records identified with URIs, expressed in

RDF, with SPARQL endpoint

Usage scenario

• Searcher retrieves an authorized literal form (which is associated with authority record URI)

• To deposit a journal paper in a repository, use Web services to display FADCS records and copy information about the journal into local database

• Record for a journal links to a Directory of Open Access Journals for discovering more

Vocabularies used in FADCS

• SKOS• BIBO• FOAF• DCTERMS• RDA

Topics of FADCS

• SW.CROSS-LINKING-VOCABS with other (authority) vocabularies in the cloud

• SW.LINKING: e.g., to geographic entities• Concepts with labels in multiple languages

AGRIS

AGRIS bibliographic database

• String-based XML data from 150 agricultural research institutes, 100 countries, for 35 years, 2.6 million records

• People search AGRIS to find that something exists, then Google to locate it

• At ingest, FAO Authority control (see FADCS)• Strategy to convert into RDF, publish as linked data– Strategy to cite URIs of other linked data sets (e.g.,

subject vocabularies, authority control, bibliographic records)

AGRIS usage scenarios

• Kenyan research center sends batch of records to AGRIS for normalization using FADCS

• Indexer uses AgroTagger to extract keywords from submitted records and generate a list of relevant related keywords

• Searchers will be able to click on displayed record fields to browse related AGRIS records

AGRIS vocabularies

• SKOS• BIBO• FOAF• DCTERMS• AGROVOC

Topics of AGRIS

• SW.LINKING• SW.IDENTIFIERS-RWO