1. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 1 ESA Ontology and Taxonomy Development for Earth Observation Sergio D’Elia - EOP-GTR Service Support and Ground Segment Technology

2. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 2 Table of Contents Background Design Multi-domain Thesaurus GSCDA Implementation Possible Extensions

3. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 3 Ontology / Terminology Objectives  Permit easy identification from non-EO domains (terms) of relevant EO Products / services Processing components  Ontology As simple as possible Supporting multiple domains With limited dependencies from evolution / changes Possibly permitting multi-lingual support (not ESA priority)

4. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 4 2005 Assessment  GEMET (General Multilingual Environmental Thesaurus) Groups / Themes, 21 languages  EARTh (Environmental Applications Reference Thesaurus) GEMET for Italy (English – Italian version)  Wiktionary (~ Wikipedia) Multilingual dictionary with definitions, etymologies,…  Eurovoc Thesaurus On EC fields, 21 languages  SWEET (Semantic Web for Earth and Environmental Terminology) Earth science data / information None focused on EO applications (see also InterRisk)

5. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 5 Table of Contents Background Design Multi-domain Thesaurus GSCDA Implementation Possible Extensions

6. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 6 Minimum EO Ontology Unstable: many changes possible below “Application Term” Application Term Product Processor Service Product = Packed data or information

7. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 7 Separation to Improve Stability Application Term Product Processor Service Multi-domain Thesaurus (shared, stable, multi-lingual) System Specific Taxonomy (dynamic, selected language) Semantic links Application Term

8. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 8 Multi-domain Thesaurus themes domains information measures can be related to Multi-domain Thesaurus health environmentclimate wave period wave height water quality water turbidity waves marine environment water transparency Secchi depth terrestrial environment deterioration of environment marine deterioration alga bloom alga bloom monitoring alga bloom location / extent alga bloom map oil pollution oil spill monitoring oil spill drift forecast oil spill surveillance natural environment Application Terms

9. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 9 Multi-domain Vocabulary Term TypeTermApplication DomainDescriptionSynonymsRelated terms Applicationalga bloommarine deteriorationAn alga bloom is a rapid increase in the population … harmful alga bloom, marine bloom, water bloom, … eutrophication, … Applicationalga bloommarine environment “““ ……………… Multi-domain Vocabulary

10. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 10 Possible Graphic Search Multi-domain Thesaurus Ontosphere3DProtégé

11. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 11 Possible Textual Search Multi-domain Vocabulary Definitions Multi-domain Thesaurus harmful alga bloom

12. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 12 Table of Contents Background Design Multi-domain Thesaurus GSCDA Implementation Possible Extensions

13. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 13 Multi-domain Search Tool (http://dimeola.esrin.esa.int/OTE/navigateInfoDomain)

14. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 14 Multi-domain Thesaurus & Vocabulary Search Multi-domain Thesaurus & Vocabulary Link to 2D Navigator Requires Java 1.6

15. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 15 2D Navigator – Land monitoring

16. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 16 2D Navigator – Marine environment

17. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 17 Table of Contents Background Design Multi-domain Thesaurus GSCDA Implementation Possible Extensions

18. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 18 Multi-domain Vocabulary Definitions Multi-domain Thesaurus GSCDA Shared and Specific Semantics Application Term GSCDA Semantic Search Tool Product TypeSensorMission Dataset GSCDA Taxonomy Search path harmful GSCDA Vocabulary GSCDA = GMES Space Component Data Access

19. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 19 GSCDA Semantic Search Tool GSCDA Semantic Search Tool (http://gsc-test.netcetera.ch/OTE/navigateInfoDomain) Multi-domain Thesaurus and Vocabulary Taxonomy and Vocabulary GSCDA Link to 2D Navigator

20. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 20 = OWL (reasoning) = Excel Shared / GSCDA Implementation Editing Multi-domain Vocabulary Multi-domain Thesaurus CSGDA Taxonomy WS IF Use Online Version Firewall Download FTP Site CSGDA Vocabulary Master Version WS IF

21. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 21 Table of Contents Background Design Multi-domain Thesaurus GSCDA Implementation Possible Extensions

22. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 22 = OWL (reasoning) = Excel Future GSCDA Implementation CSGDA Taxonomy CSGDA Vocabulary Application Term Product TypeSensorMission Dataset Reasoning Application Term Product TypeSensorMission Dataset Application Requirements Product Group

23. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 23 Band … GSCDA Ontology v2 Application Requirements Application Term Product Group Product Group GSCDA Semantic Search Tool Product TypeSensorMissionDataset GSCDA Taxonomy water GSCDA Vocabulary Multi-domain Vocabulary Definitions Multi-domain Thesaurus Application Term Resolution Sensor Mode /Type Rules / Reasoning

24. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 24 Rules Application Term Application Requirements Sensor Type / Mode Resolution (m)BandProduct Class Revisit Time (days) GlacierSAR30 - 300C, LWide Swath30 ForestSAR<300C, LWide Swath30 ForestOptical<300 R, G, B, NIR, SWIR, TIR Wide Swath30 Product Group Product Characteristics Sensor Type / Mode Resolution (m)BandProduct Class Revisit Time (days) SAR Wide SwathSAR150CWide Swath35 SAR Medium ResolutionSAR30C35 PolarimetryPolarised SAR88LPolarimetry Phase preservingSAR40LPhase preserving Optical low resolutionOptical300 R, G, B, NIR, SWIR 35

25. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 25 Ontology / Terminology - Shared / Specific Shared SSE Taxonomy Application Term Application Term pertainsTo (0..*) pertainsTo (0..*) Service Category Service Category Service Format has KEO Taxonomy generatedBy Application Term Application Term pertainsTo (0..*) Processing Category Processing Category pertainsTo (1..*) Product Type Product Type hasInput hasOutput Feature Label Feature Label Processor basedOn (0..*) Format Processing Category Processing Category Service Category Service Category VocabularyThesaurus Application Term Application Term Application Term Application Term Multi domain Product Type Product Type Sensor Mission EO only (1..*) Dataset (1..*) Application Term Application Term GSCDA Taxonomy Dataset Product Type Product Type Sensor Mission

26. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 26 Multi-domain Vocabulary Definitions Multi-domain Thesaurus Shared and Specific Semantics Service Support Environment Processing Environment GSCDA Sensor Network Application Terms Application Terms Application Terms Application Terms Search starts from within each system Marine Core Service Application Terms

27. ESA Ontology / Terminology - ECOTERM October 6, 2009 – Slide 27 Multi-domain Vocabulary Definitions Multi-domain Thesaurus Possible Future Service Support Environment Processing Environment GSCDA Sensor Network Application Terms Application Terms Application Terms Application Terms Registry + Access Marine Core Service Application Terms