1. SMAAD Project Summary SMAAD Final Presentation – updated for
Linked Open Data & OpenSearch Workshop
15 January 2014, Frascati
Yves Coene, SPACEBEL
Patrick Jacques, SPACEBEL

2. Outline Introduction Results Conclusions Future Work Project
Objectives
Scenarios and Use Cases
Results
Conclusions
Future Work
21 Mar 2013
SMAAD - FP

3. Introduction Project Semantic-web Mediated Access Across Domains
GSTP Project
June 2010 – March 2013
[now INTERGRAPH]
[now ASTRIUM GEO]
21 Mar 2013
SMAAD - FP

4. Introduction Objectives
Verify that the service-oriented architecture and standards proposed within HMA permit easy linking of metadata keywords to more than one domain ontology and thesaurus
Amendment and promotion of related standards
Demonstration with pre-operational prototype that the proposed approach is a viable solution for the discovery of EO information
21 Mar 2013
SMAAD - FP

5. Scenarios and Use Cases
Context
INSPIRE and HMA Communities
Discovery of resources (services, collections, products, sensors)
Ontologies
ISO19115
Metadata
ISO19115
EO GML
SensorML
Capabilities
WMC
ISO19119
Services
Portals
21 Mar 2013
SMAAD - FP 5

6. Scenarios and Use Cases
Scenarios addressed:
Scenario 3 – Ontology Based Resource Discovery
Use Cases
Keywords List from Controlled Vocabulary
Browsing Ontology for Keywords
Keywords Narrowing, Widening, or Relating
Keywords as Terms in Other Language
Scenario 4 – Ontology Based Resource Metadata Explanation
Following links in metadata records
Translate keywords in metadata records
Scenario 5 – Ontology Based Service Capabilities Discovery
Similar to Scenario 3 (metadata in WxS Capabilities document)
21 Mar 2013
SMAAD - FP 6

7. Scenarios and Use Cases
Scenarios (cont’d)
Scenario 6 – Ontology Based Layer Discovery
Use Cases
Similar to Scenario 3 and 5 (metadata in WMC document)
Scenario 7 – Mediation
Search using different controlled vocabulary
Show keywords from mapped ontology in metadata records
Scenario 9 – Semantic Annotation
Use Case
Controlled Editing of Resource Metadata
Scenario 10 – Discovery of Ontologies and Mediators
Discovery of Ontologies Used by a Service
Discovery of Mediators
21 Mar 2013
SMAAD - FP 7

8. Scenarios and Use Cases
Scenarios (cont’d)
Scenario 11 – Ontology Access
Use Cases
Ontology Capabilities Discovery
Textual Ontology Search
Direct Access
Results Ranking
21 Mar 2013
SMAAD - FP 8

9. Outline Introduction Results Conclusions Future Work
Architecture and Demonstrator
Standardisation
Open-source components
Lessons learned
Conclusions
Future Work
21 Mar 2013
SMAAD - FP

10. SMAAD Demonstrator Standards-based approach: Discovery and metadata
HMA, INSPIRE, OGC, ISO
Ontology access
W3C
OpenSearch
Semantic annotations
OGC r2, Semantic annotations in OGC standards
21 Mar 2013
SMAAD - FP

11. Discovery & Metadata Specifications
Catalogue 2.0.2
OGC
INSPIRE Community
CSW ISO AP
OGC
CSW ebRIM AP
OGC
RIM
ISO/TS
EO Community
ebRIM extension package for ISO (CIM)
OGC
ebRIM extension package for EO products
OGC
ebRIM extension package for EO products
OGC
ebRIM extension package for SensorML
OGC
INSPIRE Conformance Class
OGC
Computational Viewpoint
(i.e. service interfaces)
Information Viewpoint
(i.e. metadata)
Metadata
ISO 19115,
ISO 19119,
ISO 19139
GML Appl. Schema for EO Products
OGC
EOP O&M
OGC
EO SensorML profile for discovery
OGC
EO Collection Metadata EO Service Metadata
INSPIRE Product metadata INSPIRE Collection metadata INSPIRE Service metadata
EO Product Metadata
EO Product Metadata
EO Sensor Metadata
GML 3.1.1
OGC ISO 19136
O&M v2.0
OGC
SensorML
OGC
21 Mar 2013
SMAAD - FP

12. Standards-based Approach
Ontology Access Specifications:
W3C VoID (Vocabulary of Interlinked Datasets)
W3C SPARQL 1.0
W3C SPARQL 1.1 Service Description
OpenSearch 1.1 (type=« application/rdf+xml »)
W3C SKOS (Simple Knowledge Organisation System)
W3C RDF
21 Mar 2013
SMAAD - FP

13. Demo Metadata Example (extract)
ISO19139
Platform
ENVISAT
Detector
IRR_1
Collection Metadata
ESA ATS_xxx_xS
Instrument
AATSR
IRR_2 …
IRR_7
Service Metadata
BIOPAR WMS
Platform
PROBA1
Detector
MODE1_A1
Collection Metadata
ESA PROBA_CHR_xS
Instrument
CHRIS …
MODE1_A62
Service Metadata
FEDEO Clearinghouse …
Platform
ALOS
Detector
PRISM-B
Collection Metadata
ESA ALOS_PSM_02-X
Instrument
PRISM
PRISM-N
PRISM-F
Platform
SPOT5
Detector
SWIR
Service Metadata
FEDEO Collection Catalog
XS1
Collection Metadata
Spotimage PANCHROMATIC
Instrument
HRG1
XS2 …
XS3
Service Metadata
G-POD Catalog
Collection Metadata
ESA ASA_WSM_1P
SensorML
21 Mar 2013
SMAAD - FP

14. Information Viewpoint
Semantic Model (e.g. W3C SKOS)
i.e. Thesaurus (e.g.
Terminology
Concept1
Concept2
Semantic Annotation
Refers to
Semantic Annotation
Refers to
Resource metadata (e.g. ISO 19139, SensorML, OWS-Common, SWE Common, WSDL etc. formats)
Refers to
Semantic model metadata (e.g. W3C VoID format)
21 Mar 2013
SMAAD - FP

15. SMAAD Mediation Concept
Semantic Model i.e. OO Mediator
Ontology to Ontology Mediator [OASIS RD41] (e.g.
Semantic Model
e.g. Thesaurus (e.g.
Concept1
Concept1
Atmosphere
Concept2
Atmosphere
skos:exactMatch
skos:broadMatch
Refers to
Refers to
Refers to
Semantic model metadata (e.g. VoID format)
Semantic model metadata (e.g. VoID format)
21 Mar 2013
SMAAD - FP 17

16. Demonstrator Component Types
Community Portal
Clients
Semantic
Annotation
Editor
Ontology
Browser
EOP EP
Catalogue
Client
SensorML EP
Catalogue
Client
CIM EP
Catalogue
Client
ISO AP
Catalogue
Client
Open
Search
Client
Web
Map
Viewer
(1) - (6)
(7)
(6)
(1)
(2)
(3)
(4)
(5)
(4)
(3)
ISO to CIM
Transformation
CIM to ISO
Transformation
Servers
EOP EP
Catalogue
06-131
SensorML EP
Catalogue
09-163
CIM EP
Catalogue
07-038
ISO AP
Catalogue
07-045
GPOD
Catalogue
09-084 EO
WCS
10-140 EO
WMS
07-063
(5), (7)
(1) EOP EP
(2) SensorML EP
(3) CIM EP
(4) ISO AP
(5) OpenSearch
(6) EOP EP (O&M)
(7) VoID, e.g. SPARQL over HTTP
(5) Optional OpenSearch
Ontology
Mediator
(5), (7)
new
enhanced
Ontology
Server
TBD
21 Mar 2013
SMAAD - FP

17. Collections and Services
Component Instances
SMAAD
Configuration
GEOSS-GCMD
Mediator
Semantic
Annotation
Editor
Ontology
Browser
EOP EP
Catalogue
Client
CIM EP
ISO AP
Web
Map
Viewer
EO Community Portal
INSPIRE Community Portal
CIM to ISO
Transformation
Geoland2 SDI
EO Services
GEMET-LAND
Land
GEMET
GEOSS-GEMET
GCMD
GEOSS
06-131
SensorML EP
09-163
07-038
07-045 EO
WCS
10-140
WMS
07-063
SSE
SPB
ESA
EO-DAIL
EOLI
Disasters
Charter
ERDAS
GIM
@ VITO
VITO
new
enhanced
ESA/VITO
@SPB
NASA
INSPIRE
@ERDAS
Products
Collections and Services
EUMETSAT
Open
Search
GPOD
09-084
Con terra
@ SPB
SPOT
ECHO …
OGC
@OGC
@JRC
ISO to CIM
FEDEO Clearinghouse
OGC
@ EUMETSAT
KMS
@NASA
21 Mar 2013
21 Mar 2013
SMAAD - FP
SMAAD - FP 20 20

18. SMAAD Components Ontology Browser Semantic Annotation Editor
WebMapViewer
ISO / CIM Transformation Modules
Ontology Access Services (examples)
SMAAD Mediators
21 Mar 2013
SMAAD - FP

19. Ontology Browser OpenSearch interface towards Ontology
Navigation in hierarchical structure of domains
SKOS Concepts as Search Results
21 Mar 2013
SMAAD - FP

20. Ontology Browser Graphs available: Space tree Radial graph
Hyperbolic tree
Tag cloud
21 Mar 2013
SMAAD - FP

21. Ontology Browser Integration with Catalog clients
User preferred thesaurus and language
Selected concept(s) in user preferred thesaurus
Concept (with focus) mapped to thesauri known by catalog (e.g GetDomain)

22. Ontology Brower
Mapping user thesaurus to Catalog thesauri

23. Presentation – ISO Metadata
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.
Slide 28

24. Presentation – ISO Metadata
ISO format (extract) + GEMET Annotation
<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>

25. Semantic Annotation Editor
21 Mar 2013
SMAAD - FP

26. Ontology Access Services
Supported interfaces
21 Mar 2013
SMAAD - FP

27. Ontology Access - Example
Integration of NASA KMS
Same technical choices as SMAAD
Requires authentication
21 Mar 2013
SMAAD - FP

28. Ontology Access - Example
Each thesaurus configured as void:Dataset, e.g. NASA KMS. Configuration stored in Sesame ...
21 Mar 2013
SMAAD - FP

29. Metadata Mediator between Land and GEMET
SMAAD Mediators
Same I/F as Ontology Access Services
Mediation partly derived using reasoning
Use of OWLIM
Mediator Metadata in W3C VoID format - Linksets (extract)
Metadata Mediator between Land and GEMET
21 Mar 2013
SMAAD - FP

30. Outline Introduction Activities Results Conclusions Future Work
Architecture and Demonstrator
Standardisation
Open-source components
Lessons learned
Conclusions
Future Work
21 Mar 2013
SMAAD - FP

31. Results - Standardisation
Best Practice documents (voted):
OGC r2, Semantic annotations in OGC standards, version 2.0,
OGC , EO Collection and Service Discovery using the ebRIM Application Profile of CSW 2.0 (replaces OGC DLR document)
Project documents
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
21 Mar 2013
SMAAD - FP

32. Results - Standardisation
Change requests
Clarify use of CSW GetDomain operation
New queryables for ISO AP (Keyword URI, Thesaurus URI)
OWS Common change request
Extend metadata standards for thesaurus URI, keyword URI and language
For complete list, see D Issue 1, Revision 0
Implementation feedback
OGC CIM EP: Being formalised in HMA-S (con terra) as I15 EP for CSW ebRIM
Concrete "Ontology Access Service" proposed in HMA Cookbook corresponding to abstract service in OGC Best Practice
21 Mar 2013
SMAAD - FP

33. Results - Open-source Open-source components:
Software
21 Mar 2013
SMAAD - FP

34. Outline Introduction Results Conclusions Future Work 21 Mar 2013
SMAAD - FP

35. Conclusion Achievement of SOW Objectives
SOA Demonstrator with dataset, dataset series, services and sensor catalogs, WMS and WCS services based on HMA and INSPIRE standards
SOA extended with "Ontology Access Service"
Linking of metadata ISO19139, SensorML, Capabilities as per OGC r2
More than one domain ontology and thesaurus:
21 Mar 2013
SMAAD - FP

36. Conclusion Promotion of standards: OGC 08-167r2 - Best Practice
OGC , EO Collection and Service Discovery
Several OGC TC presentations, change requests (See D Discovery Standards Strategy TN)
Amendment of OGC r4: INSPIRE Conformance Class of OGC Cataloguing of ISO Metadata following SMAAD implementation feedback
Amendment of CIM EP following SMAAD implementation feedback being formalised in HMA-S
21 Mar 2013
SMAAD - FP

37. Conclusion Comprehensive demonstrator covering "EO" and "Land"
21 Mar 2013
SMAAD - FP

38. Outline Introduction Activities Results Conclusions Future Work
21 Mar 2013
SMAAD - FP

39. Future Work
Define and standardise RDF vocabularies for publishing HMA metadata (datasets, dataset series, sensors? ) as Linked Data in RDF
Aligned with EOP O&M (OGC )
Aligned with ISO 19139
Consider W3C Linked Data Platform specification (March 2013) including "Container" and "paging" mechanisms
W3C DCAT and W3C VoID for describing FedEO datasets and OpenSearch "endpoint".
21 Mar 2013
SMAAD - FP

40. Future Work
Agree on Linked Data "URI" as (unique) names for things and have them return RDF:
satellites, instruments, collections ... : CEOS task ?
Four rules of Linked Data (from W3C LDP 1.0 draft):

41. Future Work
Apply same discovery mechanisms in a lightweight OpenSearch /Atom or RDF catalog environment.
E.g. use of Atom categories discovered through APP (RFC 5023)
Extend Annotation Editor to get metadata from catalogue and re-insert the update metadata
Propose an open-source HMA Collection Metadata editor (ISO19139) integrated with Annotation Editor
21 Mar 2013
SMAAD - FP

42. Conclusion More information: Yves.coene@spacebel.be
21 Mar 2013
SMAAD - FP