GEMETGEMET

GEGEneral neral MMultilingual ultilingual EEnvironmental nvironmental TThesaurus hesaurus

leading the way to federated terminologiesleading the way to federated terminologies

Stefan Jensen, Head of information services groupStefan Jensen, Head of information services groupwith input by Søren Roug and Antonio de Mariniswith input by Søren Roug and Antonio de Marinis

Ecoterm V – FAO Rome 6th October 2009Ecoterm V – FAO Rome 6th October 2009

Where is GEMET today?Where is GEMET today?

Most popular common vocabulary globally used by the environmental community

Available in all European languages plus Russian and Arabic

On the EEA web site as application, in SKOS and through a WebAPI

http://www.eionet.europa.eu/gemet

Content integrated by various terminology related applications/services

Content fully integrated in OmegaWiki e.g.

New application areasNew application areas

Knowledge management• Structuring knowledge for improved communication

e.g. intelligent websites

Data management • Improving data descriptions

Semantic management• Modelling data and it‘s relationships• Supporting distributed data processing

Advanced translation techniques

2007 Simple Knowledge management2007 Simple Knowledge management

... as service for linking web content

2009 Create the web of environmental data2009 Create the web of environmental data

SENSE – semantic support to EIONET SENSE – semantic support to EIONET reportingreporting

A link to terminologiesA link to terminologies

Data managementData management

... support domain specific vocabularies

... be a part of the Shared Environmental infomationSystem SEIS

... support the INSPIRE initiative- metadata based indexing and retrieval, multilinguality tools

Applications / services to be built aroundApplications / services to be built around

Adopted as reference vocabulary in the European Spatial Data infratstructure (INSPIRE)

„ 2.2.3 Keyword If a resource is a spatial dataset or spatial dataset series, at least one keyword shall be provided describing the relevant INSPIRE spatial data theme (as defined in Annex I, II or III of the Directive) from the general environmental multi-lingual thesaurus (GEMET) (http://www.eionet.europa.eu/gemet). For each keyword, the following metadata elements shall be provided:”

(extract from INSPIRE implementation rule)

...

Semantic managementSemantic management

e.g. support research on and first application of onotologies

What is new? We like to learn!

Current key technology developments Current key technology developments

eContent+ projetcs

• GSSoil by Edisoft PT

• OneGeology by CZ partner

http://dev.bnhelp.cz/trac/gemetclient/wiki/example• Nature SDI tbc

Other

• Integration into Geonetwork by CamptoCamp FR• JRC builds JAVA API to the INSPIRE geoportal• Consider SPARQL web service API

http://www.w3.org/TR/rdf-sparql-protocol/

New OPOCE project New OPOCE project On developing a thesaurus (ontology) alignment environmentOn developing a thesaurus (ontology) alignment environment

1) An automatic alignment API, 2) A vocabulary repository comprising

- the vocabularies to be mapped (Eurovoc – Directory of Comm. legislation in force, Version 4.2 of Eurovoc, EET and GEMET thesauri) - the alignment results3) A GUI (Graphic User Interface) which enables to:

- Launch the automatic alignment API; - Store the mapping relations and export the mapping relations (in SKOS or XML); - Upload metadata or vocabularies in the application for further mapping. - The final tool shall be a standard platform that enables to upload RDF-format

vocabularies for mapping. - Browse/navigate from one vocabulary to another, select a concept and get

in return the mapping relations ; - Display a graphical map of the mapping relations ; - Export the "false" mapping (ambiguous) relations based on a threshold value;

(potential not relevant mapping);

thesaurus (ontology) alignment environment thesaurus (ontology) alignment environment

- Validate/correct the mapping relations manually;- Search among the vocabularies and display the mapping relations:

free text search (with wildcards to qualify the search)

The final product shall be a standard platform, which enables:

- To upload additional RDF-format vocabularies/thesauri, not part of the currentproject, and apply the alignment strategy

- To upload additional alignment algorithms

4) A SKOS web service API for accessing the mapping results and applying query expansion.

Thesauri federation – How to do it?Thesauri federation – How to do it?Looking further around what others did/do:

Example: Mapping concepts

http://www.geonames.org/ontology/

Examples from linked data initiatives ...

What else can be done?

e.g. Cooperation by linking to the GEO activities

Let‘s discuss and find out ...