1. Ontology / Terminology December 1, 2008 – Slide 1 Ontology / Terminology Sergio D’Elia - EOP-GR Service Support and Ground Segment Technology

2. Ontology / Terminology December 1, 2008 – Slide 2 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)

3. Ontology / Terminology December 1, 2008 – Slide 3 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)

4. Ontology / Terminology December 1, 2008 – Slide 4 Minimum EO Ontology Unstable: many changes possible below “Application Term” Application Term Product Processor Service Product = Packed data or information

5. Ontology / Terminology December 1, 2008 – Slide 5 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

6. Ontology / Terminology December 1, 2008 – Slide 6 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

7. Ontology / Terminology December 1, 2008 – Slide 7 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

8. Ontology / Terminology December 1, 2008 – Slide 8 Graphic Search Multi-domain Thesaurus Ontosphere3DProtégé

9. Ontology / Terminology December 1, 2008 – Slide 9 Textual Search Multi-domain Vocabulary Definitions Multi-domain Thesaurus harmful alga bloom

10. Ontology / Terminology December 1, 2008 – Slide 10 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

11. Ontology / Terminology December 1, 2008 – Slide 11 GSCDA Semantic Search Tool Multi-domain Thesaurus and Vocabulary Taxonomy and Vocabulary GSCDA Link to 2D/3D Navigator

12. Ontology / Terminology December 1, 2008 – Slide 12 2D Navigator

13. Ontology / Terminology December 1, 2008 – Slide 13 2D Navigator

14. Ontology / Terminology December 1, 2008 – Slide 14 = 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 WS IF Master Version

15. Ontology / Terminology December 1, 2008 – Slide 15 = OWL (reasoning) = Excel Future GSCDA Implementation CSGDA Taxonomy CSGDA Vocabulary Application Term Product TypeSensorMission Dataset Reasoning Application Term Product TypeSensorMission Dataset Application Requirements Product Characteristics

16. Ontology / Terminology December 1, 2008 – Slide 16 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

17. Ontology / Terminology December 1, 2008 – Slide 17 Multi-domain Vocabulary Definitions Multi-domain Thesaurus Shared and Specific Semantics Service Support Environment Processing Environment Marine Core Service Sensor Network Application Terms Application Terms Application Terms Application Terms Search starts from within each system

18. Ontology / Terminology December 1, 2008 – Slide 18 Multi-domain Vocabulary Definitions Multi-domain Thesaurus Possible Future Service Support Environment Processing Environment Marine Core Service Sensor Network Application Terms Application Terms Application Terms Application Terms Registry + Access (GEO Ontology Registry)