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Margherita SINI1, Sachit RAJBHANDARI1, Maziar AMIRHOSSEINI2,

Gudrun JOHANNSEN1,Ahsan MORSHED1, Johannes KEIZER1,

1FAO of the UN, Italy; 2The faculty of Information Science and Technology,

Universiti Kebangsaan, Malaysia

The AGROVOC Concept

Server Workbench System:

Empowering management of

agricultural vocabularies with

semantics

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Yes!

And Why:

Do we need

AGROVOC?

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The Linked Data Universe:

http://www.linkeddata.com

3

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•http://www.w3.org/2007/Talks/0221-Bangalore-IH/

RDF as a common format for merging data

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Finding things related to “genes” across

databases

Source: Joanne Luciano, Mitre, and the W3C HCLS IG

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• Name/Identy determination in unstructured

texts

• Using Agrovoc as a controlled vocabulary

• Structured RDF files that can be used to link

data

• Developed by IIT Kanpur for AgroPedia

Indica

• Prototype under testing with excellent

results

AgroTagger

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http://agropedia.iitk.ac.in/auto_tagger/callable_auto_tagger.php

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AGROVOC: From a

traditional thesaurus to an

Agricultural Concept

Scheme

A long and

Winding

Road

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..from thesaurus to Ontologies….

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• We wanted to make a semantic web tool

from AGROVOC

• There was no standard model outside, we

were on our own

• We discussed three years the model to

which we wanted to convert AGROVOC

……but in the meantime AGROVOC was

used and translated into 20 languages

AGROVOC since 2004

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Semantic Relationships

Concept to

Concept

isA (hierarchy), isPestOf, hasPest

Concept to

Term

has_lexicalization

(links concepts to their lexical

realizations)

Term to

Term

isSynonymOf, isTranslationOf,

hasAcronym, hasAbbreviation

Term to

String

hasSpellingVariant, hasSingular

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The AGROVOC OWL model

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More semantics

MAIZEUF corn NT flint maize NT popcorn NT sweet corn

MILKNT Milk Fat NT ColostrumNT Cow Milk

International Fund for Agricultural Development

UF IFAD

MAIZEsynonym cornsuperclass-of flint maize used-to-make popcorn hybridized-into sweet corn

MILKingredient Milk Fat ingredient Colostrumsuperclass-of Cow Milk

International Fund for AgriculturalDevelopment

acronym IFAD

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around 30,000 concepts

600000 labels in around 20 languages.

one-stop shop for terminological knowledge

related to agriculture in general

a knowledge base of related concepts organized in

ontological relationships (hierarchical, associative,

equivalence)

Is a concept/term/string based system

Concepts may be organized in multiple categories.

AGROVOC today

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The AGROVOC OWL model needs a revision

Ontological over commitment in many class/subclass hierarchies

Unnecessary complications through concept /term/string hierarchy

Our push of AGROVOC to the Semantic Web had enormous positive effects, among others

From 4 to 20 language versions

Defacto standard for indexing in many areas

More than 2000 downloads only in 2009

SKOS incorporated all our requirements

Evaluation of the Process

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http://www.w3.org/2004/02/skos/

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The AGROVOC SKOS Model

8171

1474

12332

skosxl:altLabel

skosxl:prefLabel

skos:broader

SKOS

Label

skos:broader

SKOS

Concept

rdf:type

rdf:type

6211

skos:broader

AgrovocConcept

Scheme

skos:topConceptOfskos:inScheme

SKOSConcept

Scheme

rdf:type

rdf:type

:bar

:foo

“corn”

“maize”

skosxl:literalForm

skosxl:literalForm

rdf:type

rdf:type

rdf:type

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Is a web-based working environment for managing the

AGROVOC Concept Server

Facilitate the collaborative editing of multilingual

terminology and semantic concept information

It includes administration and group management

features

It includes workflows for maintenance, validation and

quality assurance of the data pool

The CS is accessible freely to everybody to facilitates

collaborative editing

The workbench

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Architecture of the System

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Concept/Term Management

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Concept Relationship

Can create the concept-concept relationship

Inverse relationship is also created automatically

• Ex: If we create A affect B, then B is affected by A relationship is also

created

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Name of the image with

description

URL will point to the

image which will open in

an external

Provide the source of the

image

Can add more translation

in different language

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Concept Definition

Add definition to the

selected concept

Add translation in different

languages

Provide the source of the

definition

Creation and modified date

are set automatically

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Visualization of concepts and

Relationships in the Workbench

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AGROVOC Web Services

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The road map

• The AGROVOC concept scheme in it’s

proprietary OWL model will be published on

June 5, 2010 on version 1.0 of the concept

server workbench

• Within Summer 2010 a patch to version 1.0 of

the workbench will make it possible to export

AGROVOC SKOS

• AGROVOC SKOS will be published as linked

data.

• With version 2.0 of the workbench SKOS will

become the native format for AGROVOC

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…and more

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Thank You!