DS5 Stage 4 Plan

AstroGrid commitments

Access Control Ontology, NormanGray

Technical Case

• Apply ontological reasoning to digital certificates for access control to VO resources

Stage 4 Development

• Elaborate access-control use cases with G. Rixon and D. Morris
• Tie in SAML and proxy certificates

Registry Query Ontology, NormanGray

Technical Case

• Apply ontological reasoning and SPARQL queries to browse VO registries.

Stage 4 Development

• Enhance functionality of registry browsing with N. Winstanley.
• Enhance Quaestor functionality
• Elaborate ACR / Quaestor usage patterns

VOEvent Ontology Queries, ElizabethAuden

Science Cases

• Solar: query solar VOEvent packets accessed through VOEvent broker and using remote "rdfstore" instead of local instance file for SPARQL queries.
• Astro: explore feasibility of querying a remote store of astronomical VOEvents and use the Characterization data model to find matching observations. Once that is established, try the other way: query a remote store of observations and use the VOEvent ontology to find matching events.

Stage 4 Development

• Rdfstore: automatically transform remote VOEvent packets (either on the fly or once and store) and access through rdfstore in SPARQL queries.
• SPARQL: expand types of queries that can be performed (currently can query on dates, matching strings, and greater than / less than for numbers: no additional functionality beyond XQuery yet)
• Quaestor: query multiple ontologies in the same knowledgebase
• Ontologies: build Characterization DM ontology (done) and event type ontology. Add inferences to VOEvent 1.1 and STC 1.3 ontologies. Integrate UCD (subset) ontology?

ESO commitments

Keyword mapping

Follow-up of work done in Stage03: Improvements to MEx FITS keyword mapping utility

• Provide a mapping definition builder (user friendly, validating, reusable)
• Better unit conversion support (collaboration with CDS)
• Test on external data (collaboration with AstroGrid)
• Link to VOSpace

CDS commitments

UCD-based registry queries

Follow-up of work done in Stage03: Locate relevant resources in the VO Registry using UCDs.

• Upgrade the registry query tool when VOResource 1.0-based registries are available.
• Use UCD1+ for queries
• Apply queries to AstroGrid registry

Homogenized data retrieval

Follow-up of work done in Stage03: Extract homogenized data coming from various tables/catalogues.

• Write documentation on the tool
• Release alpha version as VO Application
• Improve characterization management (cross-DS with DS6)

Link between homogenized data retrieval and SED construction

New: identify needs to build SEDs not restricted to the radio domain.

• Identify requirements and already existing/missing elements
• Cross-DS with DS4 and IVOA Source Catalogue Data Model

Object Names recognition

Follow-up of work done in Stage03: Automated extraction of astronomical object names from PDF articles.

• Improve handling of special cases in the Dictionary of Nomenclature
• Improve regular expressions extraction
• Find best compromise between completeness and reliability

INAF commitments

Ontology of astronomical object types

Follow-up of work done in Stage03: Continue the construction of the ontology

• Develop specific domains in collaboration with experts (e.g. AGN, QSO...)
• Test application on other SIMBAD-related use cases
• Open discussion at the IVOA level