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GEMET, the General Environmental Multilingual
Thesaurus Development, User Perspectives and
Plans for a Thesaurus System
Part 1 overhead presentation Bruno Felluga, CNR
- Consiglio Nazionale delle Richerche, Rome,
Italy Part 2 slide show Stefan Jensen, project
leader ETC/CDS, Lower Saxony Ministry of the
Environment Hannover, Germany Open Forum on
Metadata Registries, Santa Fe, NM January 20,
2000
EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Outline GEMET presentation - part 2 linking
terminology and applications
GEMET activities performed by the ETC/CDS -
co-ordination of the thesaurus development -
GEMET usage for indexing and retrieving
environmental metadata - development of
application around GEMET - assessing 3rd party
user needs to incorporate into future
developments
EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Co-ordination of the development
- Encouraging and co-ordinating the translation
of the core terminology into 12 languages -
Contracting application development around
GEMET - implement shared coding lists (value
domains) - Promoting the use of GEMET through
marketing activities - Distributing GEMET and
supplying technical helpdesk
EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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GEMET - usage for indexing metainformation
GEMET has been used in the work of EEA to index
metadata from the following
resources - The Directory of Information
Resources (DIR) - The Reporting Obligation
Database (ROD) to do this, 2 applications
were developed - MS-Access based tool for
metadata registry (WinCDS) - Webbased JAVA tool
for online registration(prototype)
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Thesaurus part of WinCDS
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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JAVA based online registration - the indexing
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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GEMET - usage for indexing metainformation
Directory of Information Resources Total dataset
sum 931 Controlled terms in use 655 of
5300 Total descriptors sum 4714 (GEMET terms
used for indexing) Term ranking 121 of 655
terms have been used more than 10 times
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Terms used more than 60 times
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DIR term ranking
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DIR term ranking
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GEMET - usage for indexing metainformation
Reporting Obligations Database ROD prototype
Questions Datasets total 22844 Controlled terms
in use 323 of 5300 have been used 86628
times Top ranking Term atmospheric emissions
has been used 14443 times Sources Datasets
total 42 Controlled terms in use 65 of 5300
have been used 256 times
EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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ROD questions term ranking
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ROD questions term ranking
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ROD questions term ranking
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ROD sources term ranking
between 10 and 33
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ROD sources term ranking
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GEMET - usage to browse and retrieve metadata

• GEMET is used to browse or retrieve metadata
  within 5 applications
• The ThesShow GEMET browser
• The WebCDS accessing the DIR via HTML
• The WebCDS accessing the DIR via JAVA applets
• The multilingual search service (MSS)
• The Reporting Obligation Database (ROD)

EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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JAVA based thesaurus browser for WebCDS
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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The Multilingual Search Service (MSS)

• Motivation
• distributed multilingual document collections of
  European institutions (European Environment
  Agency, EEA)
• support query formulation in users native
  language
• search and retrieve documents in all
  understandable languages
• Approach of EEAs Multilingual Search Service
  (MSS)
• thesaurus support for query formulation(domain
  specific thesaurus required, e.g. GEMET)
• translation by making use of multilinguality of
  theseaurus(GEMET is available in 12 languages)
• use translations as input for off-the-shelf Web
  search engine (e.g., Netscape Compass Server)

EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Using a term for searching metadata
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Search results from websites within the EERC
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Questionnaire about GEMET usage
Goals - learn more about current users - get
guidance from usage for future development Proces
s - the current 200 GEMET users from all over
the world have been addressed by e-mail -
the 2 page (annexes) questionnaire was made
available digitally and as a form on internet -
Survey was performed in November and December
1999
EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Areas and frequency of GEMET usage
100 translation
56 translation22 indexing/retrieval
42 translation 33 indexing 22 retrieval
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SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Current usage of languages in GEMET

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Evaluation of the thesaurus content

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Usage of the GEMET browser ThesShow

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GEMET - conclusions from the own indexing
experience and the questionnaire
General guidelines - The GEMET content should
remain stable, minor improvements are
justified - There is a need to add new
functionalities to the tools to allow the user
to customise an own thesaurus system
EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY
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Contact information
URL http//www.mu.niedersachsen.de or
http//etc-cds.eionet.eu.int eMail
etc/cds_at_mu.niedersachsen.de
EUROPEAN TOPIC CENTRE ON CATALOGUE OF DATA
SOURCES (ETC/CDS) EUROPEAN ENVIRONMENT AGENCY