AIMS

Alignments

Linked Data is a method of web publication in which each individual piece of data is:

  • uniquely identified using HTTP URIs (that is, URLs, or 'web addresses'),
  • available both as 'machine readable' data and as 'human readable pages, and
  • linked to other resources.

AGROVOC is now available as a linked open data (LOD) set published, aligned (linked) with several vocabularies. The LOD version of AGROVOC is in RDF/SKOS-XL, and is stored in Allegrograph triple store (data is accessible to machines through a SPARQL endpoint, and to humans by means of a HTML pages generated with Loddy). 

Table 1 below provides some figures about the vocabularies to which AGROVOC is aligned:

 ResourceTopicsTotal # of Linked conceptsLanguagesLinked Resource available as LOD?Type of link (and # of linked concepts)
1Aquatic Sciences and Fisheries Abstracts (ASFA): ThesaurusFisheries1784 Yesskos:closeMatch (38), skosLexactMatch (1741)
2Biotechnology Glossary (FAO)Biotechnologies793EN, ES, FR, +3 moreYesskos:closeMatch (793)
3Chinese Agricultural Thesaurus (CAT)Agricultureup to 20700 Yes

skos:narrowMatch (137)

skos:broadMatch (10153)

skos:exactMatch (10325)

4DBpediaGeneral11013EN, ES, FR + 8 moreYesskos:closeMatch (11013)
5Dewey Decimal Classification (DDC)General401EN, ES, FR + 8 moreYes

skos:closeMatch (2)

skos:exactMatch (399)

6EUROVOCGeneral EU1 269EN, ES, FR + 21 moreYesskos:exactMatch (1269)
7GEMETEnvironment1 185EN, ES, FR + 30 moreYesskos:exactMatch (1185)
8GeoNamesGeographical entities206EN, ES, FR + 63 moreYesskos:exactMatch (206)
9Geopolical OntologyGeopolitical entities253AR, CH, EN, ES, FR, RUYesskos:exactMatch (253)
10Library of Congress Subject Headings (LCSH)General1 079ENYesskos:exactMatch (1079)
11NALThesaurusAgriculture13705EN, ESYes

skos:exactMatch (13703)

skos:closeMatch (2)

12RAMEAU Répertoire d'autorité-matière encyclopedique et alphabetique unifie  General671FRYesskos:exactMatch (671)
13STW - Thesaurus for EconomicsEconomy1125EN, DEYes

skos:exactMatch (1122)

skos:closeMatch (3)

14TheSoz - Thesaurus for the Social SciencesSocial sciences827EN, DEYes

skos:exactMatch (821)

skos:closeMatch (6)

15SWD (Schlagwortnormdatei)General6245DEYesskos:exactMatch

skos:closeMatch

skos:broadMatch

skos:narrowMatch
16Environmental Applications Reference Thesaurus (EARTh) Environment1385EN+Yesskos:exactMatch (1385)

Table 1. Some figures of vocabularies linked from AGROVOC (last updated on March 2018). AGROVOC is also linked to DNB, and Il Nuovo soggettario of National Central Library of Florence (BNCF). 

A VoID description of the AGROVOC Linked Open Dataset is also available.  

Top Concepts of AGROVOC

For quick access to human readable Linked Open Data pages of AGROVOC use this list of top concepts (note that these same HTTP URIs will return RDF if requested in the accept HTTP header):

SPARQL Query Interface

AGROVOC is also accessible using SPARQL (SPARQL Protocol and RDF Query Language), an SQL-like query language typically used to extract RDF triples from triple-stores:

SPARQL query examples

Given the URI of a resource, for example http://aims.fao.org/aos/agrovoc/c_4039 discover the English preferred label and all the exact matches:

 
SELECT ?pl ?em {
        OPTIONAL { <http://aims.fao.org/aos/agrovoc/c_4039> skos:exactMatch ?em } .
        <http://aims.fao.org/aos/agrovoc/c_4039> skos:prefLabel ?pl .
        FILTER ( (lang(?pl)="en") )}
 
RESULT :
Pl                   em
 
Given the English preferred label, for example Japan, discover the URI and all the exact matches:
 
 
SELECT ?uri ?em {
  ?uri skos:prefLabel "Japan"@en .
  OPTIONAL { <http://aims.fao.org/aos/agrovoc/c_4039> skos:exactMatch ?em } .
}
 
RESULT:
uri                                                                    em