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The use of GEMET for the Swiss Environmental Catalogue “Envirocat”

14-15 April 2004. The use of GEMET for the Swiss Environmental Catalogue “Envirocat”. The use of GEMET for Swiss Environmental Catalogue. What is Envirocat? Why did we choose GEMET as the Thesaurus? How was GEMET implemented in Envirocat? Comments and needs. What is Envirocat?.

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The use of GEMET for the Swiss Environmental Catalogue “Envirocat”

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  1. 14-15 April 2004 The use of GEMETfor theSwiss Environmental Catalogue“Envirocat”

  2. The use of GEMET for Swiss Environmental Catalogue • What is Envirocat? • Why did we choose GEMET as the Thesaurus? • How was GEMET implemented in Envirocat? • Comments and needs

  3. What is Envirocat? A SAEFL/UNEP partnership for the Swiss environmental metadata catalogue • UNEP/DEWA/GRID-Geneva is involved in two projects of SAEFL (Swiss Agency for Environment, Forest and Landscape): CH-CDS and Alpine CDS (Catalogue of Data Sources).

  4. What is Envirocat? • In 1998, SAEFL decide to use the European system ‘CDS’, the application Webcds was launched officially in June 2000. • In 2003, it is decided to develop a new tool called ‘Envirocat’ allowing decentralised on-line management of metadata. • Partners’ requests and CDS experience and analysis was used during the new application development.

  5. Why did we choose GEMET as Thesaurus? A major priority was to: • Save the amount of work invested in metadata collection and facilitate the importation of the 6,000 metadata-entries already included and their key words indexing.

  6. administration agriculture air biology building chemistry climate natural dynamics economics energy environmental policy fishery food, drinking water forestry general geography human health animal husbandry industry information legislation military aspects natural areas, landscape, ecosystems noise, vibrations physics pollution materials radiations tourism research resources disasters, accidents, risk trade, services social aspects, population soil space transport urban environment, urban stress waste water Why did we choose GEMET as Thesaurus? • 3’535 objectsdefined by 12’808 keywords. • 2’449 addressesdefined by 1’137 keywords,

  7. The access analysis shows us the relative weight of each language. CH-CDS language use in 2002 English: 13% German: 45% Italian: 12% French: 30% Why did we choose GEMET as Thesaurus? Its linguistic possibilities: Switzerland needed at least 4 languages: de, fr, it, en

  8. Why did we choose GEMET as Thesaurus? • In order to have a large set of environmental terms to be used to: • describe metadata (could have less); • search metadata (number ensures better retrieval) 87,193 terms in GEMET 3.0!

  9. How GEMET was implemented in Envirocat? A subset of GEMET 3.0 is currently running for better system performance: • the weight of the Thesaurus was reduced: only 4 languages were kept: (German, French, English and Italian) 87,193 terms -> 24,274; • Database model was simplified • hierarchy was not answering exactly to our needs: so we kept only terms and themes tables (not synonyms, groups, supergroups) • Broader and Narrower terms were used to create a relation table representing the hierarchy.

  10. How GEMET was implemented in Envirocat? The data model allows multiple hierarchy to: • keep hierarchy of terms; • allow attribution to EEA themes(automatically created through terms); • Add and eventually link other Thesauri in the future if needed ...

  11. How GEMET was implemented in Envirocat? During fulfillment:

  12. without option search 'eau' = ok search 'forêt' = ok search 'agricole' = no search 'wasser' = no search 'forest' = no search 'Landwirtschaft' = no with option search in thesaurus search 'eau' = ok search 'forêt' = ok search 'agricole' = ok search 'wasser' = no search 'forest' = no search 'landwirtschaft' = ok with option search in thesaurus +Translation search 'eau' = ok search 'forêt' = ok search 'agricole' = ok search 'wasser' = ok search 'forest' = ok search 'landwirtschaft' = ok How GEMET was implemented in Envirocat? For search... Test data existing in database: titleEssai de donnée sur le lac abstract:L'utilisation ... forêt …. l'eau .... Keywords: gestion agricole

  13. EEA topic can be selected with ‘ticks’. How GEMET was implemented in Envirocat? For topic search... In CH-WebCDS experience, we see that the average use was 78% done by ‘quick search’, 17% by ‘topic search’ and 5% by ‘expert search’.

  14. Comments and needs? Alpine Convention ISO 19.115 • Mountain Farming • Regional Planning • Waste Management • Energy • Mountain forests • Population and Culture • Conservation of Nature and the Countryside • Soil Conservation • Prevention of Air Pollution • Water Management • Tourism and Recreation • Transport • Farming • Biota • Boundaries • Climatology, Meteorology, Atmosphere • Economy • Elevation • Environment • Geoscientific Information • Health • Imagery, Base maps, Earth Cover • Intelligence, Military • Inland Waters • Location • Oceans • Planning, Cadastre • Society • Structure • Transportation • Utilities, Communications

  15. Comments and needs? GEMET: • Sometimes too detailed or specific; • Duplication of terms due to different translations (i.e. Lärmbekämpfung/lutte contre le bruit, and Lärmbekämpfung/Diminution du bruit)

  16. Direct user remarks. Implementation of access analysis tool to answer the following questions: which words are often searched by a normal user or by authors during edition phase? Obtain less themes (about 20 vs 40 EEA themes) and build a thematic hierarchy. Add terms “à la mode”. Link GEMET with other topic list and eventually implement themes from ISO 19.115 and Alpine Convention. Comments and needs? Envirocat future development in termof Thesaurus: • Add new Thematic Theme list • Adding/deleting terms according to the user needs

  17. Comments and needs? Open questions or proposition: • Is it possible to develop a kind of ISO standard for Environmental Thesauri? • New Thesaurus of “Super” Thesaurus should ensure compatibility with GEMET product. • An Environmental Thesaurus core could be maintained through an international working group and an on-line service could be proposed to download extension module (for GEMET or new Thesauri) by languages, thematic specialisations or nations.

  18. http://www.envirocat.ch Actualy 300 metadata published on 6,000 existing More information? Jean-Philippe RichardUNEP/DEWA/GRID-Geneva11, Ch. des Anémones +41 22 917 86 32jean-philippe.richard@grid.unep.ch http://www.grid.unep.ch

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