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

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

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

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

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

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

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

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

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

SMAAD Demonstrator Standards-based approach: Discovery and metadata HMA, INSPIRE, OGC, ISO Ontology access W3C OpenSearch Semantic annotations OGC 08-167r2, Semantic annotations in OGC standards 21 Mar 2013 SMAAD - FP

Discovery & Metadata Specifications Catalogue 2.0.2 OGC 07-006 INSPIRE Community CSW ISO AP OGC 07-045 CSW ebRIM AP OGC 07-110 RIM ISO/TS 15000-3 EO Community ebRIM extension package for ISO (CIM) OGC 07-038 ebRIM extension package for EO products OGC 06-131 ebRIM extension package for EO products OGC 10-189 ebRIM extension package for SensorML OGC 09-163 INSPIRE Conformance Class OGC 08-197 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 06-080 EOP O&M OGC 10-157 EO SensorML profile for discovery OGC 09-163 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 03-105 ISO 19136 O&M v2.0 OGC 10-025 SensorML OGC 07-000 21 Mar 2013 SMAAD - FP

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 ») http://www.opensearch.org/.../Extensions/Relevance/1.0 W3C SKOS (Simple Knowledge Organisation System) W3C RDF 21 Mar 2013 SMAAD - FP

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

Information Viewpoint Semantic Model (e.g. W3C SKOS) i.e. Thesaurus (e.g. http://gcmd.gsfc.nasa.gov/skos/) 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

SMAAD Mediation Concept Semantic Model i.e. OO Mediator Ontology to Ontology Mediator [OASIS RD41] (e.g. http://www.earthobservations.org/GEOSS/GEO_Vocabulary) Semantic Model e.g. Thesaurus (e.g. http://gcmd.gsfc.nasa.gov/skos/) 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

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

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 06-131 @ EUMETSAT KMS @NASA 21 Mar 2013 21 Mar 2013 SMAAD - FP SMAAD - FP 20 20

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

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

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

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)

Ontology Brower Mapping user thesaurus to Catalog thesauri

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

Presentation – ISO Metadata ISO 19139 format (extract) + GEMET Annotation <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword><gmx:Anchor xlink:href="http://www.eionet.europa.eu/gemet/concept/3650">Geology</gmx:Anchor></gmd:keyword> <gmd:type><gmd:MD_KeywordTypeCode codeList="#MD_KeywordTypeCode" codeListValue="theme"/></gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gmx:Anchor xlink:href=" http://www.eionet.europa.eu/gemet/">GEMET - INSPIRE Themes, Version 1.0</gmx:Anchor> </gmd:title> <gmd:date> <gmd:CI_Date> <gmd:date><gco:Date>2009-05-29</gco:Date></gmd:date> <gmd:dateType>

Semantic Annotation Editor 21 Mar 2013 SMAAD - FP

Ontology Access Services Supported interfaces 21 Mar 2013 SMAAD - FP

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

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

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

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

Results - Standardisation Best Practice documents (voted): OGC 08-167r2, Semantic annotations in OGC standards, version 2.0, 2012-10-10 OGC 11-035, EO Collection and Service Discovery using the ebRIM Application Profile of CSW 2.0 (replaces OGC 07-025 DLR document) Project documents OGC 08-197r4, 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

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 D4100.1 Issue 1, Revision 0 Implementation feedback OGC 07-038 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 07-097 Best Practice 21 Mar 2013 SMAAD - FP

Results - Open-source Open-source components: http://rssportal.esa.int/tiki-index.php?page=Open Software 21 Mar 2013 SMAAD - FP

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

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 08-167r2 More than one domain ontology and thesaurus: 21 Mar 2013 SMAAD - FP

Conclusion Promotion of standards: OGC 08-167r2 - Best Practice OGC 11-035, EO Collection and Service Discovery Several OGC TC presentations, change requests (See D4100.1 Discovery Standards Strategy TN) Amendment of OGC 08-197r4: INSPIRE Conformance Class of OGC Cataloguing of ISO Metadata following SMAAD implementation feedback Amendment of CIM EP 07-038 following SMAAD implementation feedback being formalised in HMA-S 21 Mar 2013 SMAAD - FP

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

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

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 10-157) 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

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):

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

Conclusion More information: Yves.coene@spacebel.be Philippe.mougnaud@esa.int 21 Mar 2013 SMAAD - FP