sns – semantic network service environmental thesaurus/terminology workshop, geneva 14-15 april...
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Semantic Network Services
Dr. Maria Rüther
Umweltbundesamt, BerlinEmail: [email protected]
Thomas Bandholtz, Consultant
Email: [email protected]
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Shared vocabulary
1. a thesaurus of currently 39,143 environmental terms (UmThes®, German source of GEMET).Language: German – English
2. a gazetteer including the intersections between 48,213 geographical objects of all kinds. Language: German
3. a chronology of historical and contemporary events that have affected the environment, currently 593 events. Language: German - English
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Thesa.Thesa.
ComponentComponent
preferredpreferred
broaderbroader
compositecomposite
relatedrelated
SynonymSynonym
DescriptorDescriptor
Morphology
LocationLocation
intersectsintersects Morphology
part ofpart of
Types / Layers
Coordinates
EventEvent
sequencesequenceMorphology
relatedrelated
Types
Temp. Extent
Integration in a Topic Map
TopicTopic
whatwhat
wherewhere
Associations between events, places names and descriptions
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
An Example for associations
DescriptorDescriptor
TopicTopic
EventEvent LocationLocation
ConferenceConference CommunityCommunity
NationNation
climate conventionFirst UNFCC
Conference, Berlin3/28/1995 - 4/7/1995
Berlin
Deutschland
situated inbroader
wherewhat
International convention
occurrenceshttp://unfccc.int/cop5/resource/docs/cop1/07.htm
http://unfccc.int/cop5/resource/docs/cop1/07a01.htm
ThesaurusThesaurus
Topic classTopic instanceAssociation
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Accessing the topics by Web Services
SNS offers 3 services • findTopics searches the Topic Map for topics matching
the given parameters. The result is a flat list of matching topics, but no
associations.
• autoClassify provides automatic indexing. The text to be indexed can be passed by a character constant (document) or by web address (url).
The result is a list of significant topics that classify the document.
• getPSI (PSI= „Published Subject Identifier“) provides terminology reference by web address (url).
The result is a tree of associated topics.
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
ready for use: Developer Toolkit & Documentation
gein® and GeoMIS.Bund are using these Web Services
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
What comes next...
...possible
• Other applications integrate the SNS services• SNS extends the vocabulary for new users• SNS provides its technology for new services
http://www.semantic-network.de
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
sns sns End of regular presentation
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
How to reference a Thesaurus in ISO 19139
<keyword> <MD_KeywordTypeCode codeList="http://services.agency.int//getPSI?" codeListValue="WEU10"> drinking water quality </MD_KeywordTypeCode> </keyword>
What will http://services.agency.int//getPSI?WEU10 return?- a human-readable web page? -XML encoded description?
OGC Catalog Services ISO 19115geographic Metadata
ISO 19139XML Schema
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
XML Formats for Thesaurus
• GEMET XML format – no Schema, no DTD – no standard !http://www.eionet.eu.int/GEMET
• SKOS-Core 1.0 RDF Schema by SWAD Europe Thesaurus Activity (W3C + IST) http://www.w3.org/2001/sw/Europe/reports/thes
• The ADL Thesaurus Protocol (Alexandria Digital Library)http://www.alexandria.ucsb.edu/~gjanee/thesaurus/specification.html
• Zthes: a Z39.50 Profile for Thesaurus Navigationhttp://lcweb.loc.gov/z3950/agency/profiles/zthes-04.html
or more general:
• XTM: XML Topic Map (ISO 13250)
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Technical platform used by SNS
• Oracle Database• J2EE Architecture• Open Source (Tomcat, Cocoon)• Web Services (W3C Web Service Activity)• XML Interchange format: XTM 1.0
(XML Topic Maps, ISO/IEC 13250)
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Searching the topics: www.semantic-network.de
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Öffentliche Umweltinformation im Web*
www.gein.de
To theTopic Map
* EU-Umwelt-informations-richtlinie,Novellierungdt. Umwelt-informations-gesetz
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
Erweiterung der Topic Map
Thesa.
LocationTopic
Event
„Microthesauri“IndicatorsIndicatorsMethodsMethods SubstancesSubstances
regionregionregionregion regionregion
ActorsActors
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
SNSSNS
Alpenkonvention
Datenbanken im UBA,integrierte Umweltbeobachtung
Neu: Koordinierungsstelle UDK/gein… einzelne Länder …
GEMET,Twinning-Projekte
GeoMis.Bund
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SNS – Semantic Network Service
Environmental Thesaurus/Terminology Workshop, Geneva 14-15 April 2004
R&D Project May 2001 – December 2002
• „Development of a Semantic Network Service for theGerman Environmental Information Network (gein®)“(UFOPLAN-Ref. No. 20111612, promoted by BMU/UBA, Germany)
• Goals– Integration of the Environmental Thesaurus (UmThes), a
national gazetteer and a chronology of evironmental events in a common data model (topic maps)
– Building associations between the professional terms, places names and events
– Providing access to the network for other applications (e.g. gein®) by Web Services
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