1. SMAAD Project Semantic Annotation and Mediation
Y. Coene, Spacebel s.a.
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2. Overview Architecture Ontology browser Catalogue clients
Semantically-enabled WebMapViewer
Semantic Annotation Editor
Contribution to standards
Spare slides with examples
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3. Semantic Search Clients http://smaad.spacebel.be
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4. SMAAD Architecture
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5. SMAAD Architecture Ontology Access Proposed Specifications:
W3C SPARQL 1.0
SPARQL 1.0 Query Language for RDF
SPARQL 1.0 Query results XML Format
SPARQL 1.0 Protocol for RDF
W3C SPARQL 1.1 Service Description
OpenSearch 1.1 (type=« application/rdf+xml ») for free-text search
Linked Data
All above discoverable from VoID Description
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6. SMAAD Ontology Browser
To be used in combination with:
CIM EP, ISO AP, SensorML EP catalogues
EO WCS and EO WMS clients
Obtains configuration (list of ontology servers and mediators) from VoID info accessible in a SPARQL endpoint.
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Slide 6

7. SMAAD Ontology Browser
OpenSearch interface towards Ontology
Navigation in hierarchical structure of domains
SKOS Concepts as Search Results
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Slide 7

8. SMAAD Ontology Browser
Search keyword « Microwave» in GCMD
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Slide 8

9. Integration with catalogues
Assumes:
User prefers thesaurus T1 with keywords t1
Catalogues contain metadata annotated with T2, T3 etc. keywords t2, t3
Mechanism:
Catalogue request contains keywords t2, t3 equivalent to t1 which are found using mediation (if available)
Catalogue responses show keywords from T1 equivalent to the T2 and T3 keywords included in the response and converted using mediators if available.
Applies to:
CIM EP, ISO AP, SensorML EP.
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10. Integration with Catalogues
Get thesauri used in this catalogue
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11. Integration with catalogues
All concept labels are displayed in french
Change language to « French»
Catalogue search results corresponding to selected concept(s)
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Slide 12

12. Catalogue search results and Mediation
Click on «  Geology» keyword
List of keywords and thesauri
3 cases:
Mediator found and concept mapped.
Mediator found but concept not mapped.
No mediator found.
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Slide 13

13. Access to ESA Multi Domain Thesaurus (Land) and mediation to GEMET
Hyperbolic Tree view
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14. Access to ESA Multi Domain Thesaurus (Land) and mediation to GEMET
Radial Graph view
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Slide 15

15. Semantically enabled WebMapViewer
WMS and WCS layer discovery based on semantic annotations (in Capabilities / OWS Common)
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16. Semantic Annotation Workflow
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17. Semantic Annotation Editor
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18. Contributions to Standards
Specifications:
OGC , OGC Sensor Model Language 2.0 Extensions for Earth Observation Instruments and Platforms, 30/09/2011, Draft internal project document.
OGC r3, Semantic annotations in OGC standards, version 2.1, , Internal Project Document.
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19. Contribution to Standards
Specifications:
OGC , EO Collection and Service Discovery using the ebRIM Application Profile of CSW 2.0, Draft internal project document. Update of OGC
OGC r4, INSPIRE Conformance Class of OGC Cataloguing of ISO Metadata (CIM) using the ebRIM profile of CS-W - CIM EP Protocol Binding of INSPIRE Discovery Services, 11/10/2011, Internal project document.
OGC r2, OGC Catalogue Services Specification 2.0, Extension Package for ebRIM Application Profile: SensorML, Version 0.3.0, 02/04/2010, OGC Pending Document.
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20. Spare slides
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21. Annotation Example (GEMET)
<gmd:descriptiveKeywords>
<gmd:MD_Keywords>
<gmd:keyword><gmx:Anchor xlink:href="
<gmd:type><gmd:MD_KeywordTypeCode codeList="#MD_KeywordTypeCode" codeListValue="theme"/></gmd:type>
<gmd:thesaurusName>
<gmd:CI_Citation>
<gmd:title>
<gmx:Anchor xlink:href=" - INSPIRE Themes, Version 1.0</gmx:Anchor>
</gmd:title>
<gmd:date>
<gmd:CI_Date>
<gmd:date><gco:Date> </gco:Date></gmd:date>
<gmd:dateType>
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22. Semantic Model Metadata
Optional free text search I/F
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23. Mediator Metadata
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24. SKOS Semantic Model (GCMD)
<skos:Concept rdf:about="
<skos:prefLabel xml:lang="en">Visible Imagery</skos:prefLabel>
<skos:definition xml:lang="en">
A reproduction of an object by imaging the visible radiation coming from the object or reflected by the object.
</skos:definition>
<skos:broader rdf:resource="
</skos:Concept>
<skos:Concept rdf:about="
<skos:prefLabel xml:lang="en">Radar Imagery</skos:prefLabel>
A mapping of the observed radar reflectivity of a scene, consisting of a file of digital numbers assigned to spatial positions on a grid of pixels.
<skos:broader rdf:resource="
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25. Mediator example (GEOSS-GCMD)
Example of Mediator with mappings GEO AIP-4: 15/11/2011 (Cristiano Fugazza):
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26. OpenSearch 1.1 – Request/Response
Example request:
Response
<rdf:RDF xmlns:rdf=" xmlns:dcterms=" xmlns:opensearch=" xmlns:rdfs=" xmlns:relevance=" xmlns:skos=" xmlns:void=" xmlns:xsd="
<opensearch:totalResults>3</opensearch:totalResults>
<opensearch:startIndex>1</opensearch:startIndex>
<opensearch:itemsPerPage>20</opensearch:itemsPerPage>
<opensearch:Query role="request" searchTerms="engineering" startPage="1"/>
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27. Opensearch Response
<rdf:Description rdf:about="
<skos:prefLabel xml:lang="en">Agricultural Engineering</skos:prefLabel>
<skos:broader rdf:resource="
<skos:narrower rdf:resource="
<skos:narrower rdf:resource="
<relevance:score>1.0</relevance:score>
</rdf:Description>
<rdf:Description rdf:about="
<skos:prefLabel xml:lang="en">Forest Harvesting and Engineering</skos:prefLabel>
<skos:broader rdf:resource="
<relevance:score>0.75</relevance:score>
</rdf:RDF>
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