SuaveCAT and VOEvent Ontology

1
SuaveCAT and VOEvent Ontology

• Elizabeth Auden
• MSSL, AstroGrid
• VOTech DS5
• Converting UML to OWL
• A VOEvent Ontology
• Survey of Formal and Informal Ontologies
• VOTech Applications with Protégé
• Solar User-Appended Event Catalogue

2
Ontology Survey

• Goal Explore use of both formal and informal
  ontologies in academic research.
• Formal biomedicine has the most developed use
  of ontologies OWL extensions, software and
  papers available for download.
• Informal library sciences offer several
  decades experience in cataloguing and metadata.
  Phylogenies are also worth exploring software
  for biological classification.
• Best resources formal, OBO (Open Biomedical
  Ontologies) informal, MARC (Machine Readable
  Catalogue record) and Washington phylogeny
  repository.
• http//wiki.eurovotech.org/bin/view/VOTech/SurveyI
  nformalOntologies
• http//wiki.eurovotech.org/bin/view/VOTech/SurveyF
  ormalOntologies

3
Protégé VOTech Applications

• Goal Apply ontology research in other
  disciplines to VOTech applications.
• Convert Astronomical Thesaurus to an ontology.
• Poster "Evaluating Protégé OWL as Editing
  Environment for NCI Thesaurus". Lintern,
  Fergerson, Noy, Knublanch et al. CHISEL group,
  University of Victoria.
• Add journal articles to registry resource
  discovery
• Poster "Ontology Based Browsing of
  Bibliographic Metadata". Abaitua, Azpilla,
  Diaz-Labrador, Fernandez, Jacob, Sanchez.
• Add complex mathematical expression to resource
  discovery / workflows
• Poster "Representing Mathematical Problems by
  Means of Protégé OWL". Diz, Gil
• Create user-updated event catalogue using VOEvent
  ontology to correlate VOEvent packets
• Based on solar idea by Louise Harra at MSSL and
  email by Roy Williams
• Filter VOEvent RSS feeds with ontological logic
• Norman Gray
• Future Explore RSS feed filtering using solar
  events and gamma ray burst VOEvent packets
• http//wiki.eurovotech.org/bin/view/VOTech/Protege
  Conference2005

4
SuaveCAT Proposal

• Goal Create solar user-appended solar VOEvent
  catalogue.
• First step create catalogue based on VOEvent
  schema with solar extensions.
• Identify metadata used in SEC and VOEvent schema
  build MySQL table.
• Build JSP front end with add, edit, delete and
  search facilities.
• Deploy DSA module to access catalogue and
  register with AstroGrid
• Second step use ontology tools to correlate
  VOEvent packets describing the same VOEvent
  inside the catalogue.
• Identify concepts in VOEvent and STC schemas that
  must be extended for solar metadata (such as
  coordinates).
• Build VOEvent ontology with solar extensions.
• Create tool that will correlate VOEvent packets
  using VOEvent ontology.
• Extend tool to correlate VOEvent packets and SEC
  entries.
• Use test VOEvent packets to run automated
  correlations tests with the SEC catalogue and
  write results to a database.
• Future proceed with implementation of catalogue.
• http//wiki.eurovotech.org/bin/view/VOTech/SolarVO
  EventCatalogue

5
SuaveCAT Implementation

• User-appendable event catalogue operating as
  prototype production catalogue can be by for
  Solar-B scientists.
• Catalogue database built from VOEvent schema.
• Users can fill in 20 VOEvent fields stored in
  MySQL
• VOEvent packet generator hard codes other VOEvent
  fields
• DSA makes catalogue searchable in AstroGrid
  workflows
• CEA provides user interface to
• Create new catalogue entry edit text fields
• Generate VOEvent packets
• Upcoming work
• Add VOEvent RSS feed to catalogue software new
  event catalogue entry generates VOEvent packet in
  RSS feed
• http//wiki.eurovotech.org/bin/view/VOTech/SuaveCa
  tImplementation

6
SuaveCAT Metadata

• User-provided
• Active region number, instrument name, event
  description, solar coordinates, spectral unit,
  spectral name, spectral value, spectral error,
  start / end times, event name, event concept,
  event reporter, reporters institution, reporting
  date, cited eventID, citation reason, citation
  description
• Hard-coded
• Role, version, publisherID, param element for
  ARN, param element for instrument name,
  AstroCoordSystemID, TimeFrame name, TimeScale,
  TOPOCENTER, SolarSpaceFrame, HGC, SPHERICAL,
  Position2D, Unit, Sun id
• Generated
• EventID

7
SuaveCat DSA
8
SuaveCAT VOEvent Packet
9
A VOEvent Ontology

• Goal Create first draft of a VOEvent ontology.
• Used Protégé to build OWL file from VOEvent 0.90.
• Submitted first draft of VOEvent ontology to IVOA
  semantics mailing list for comment.
• Debate covered technical points of hierarchy and
  relationship as well as the semantics of how much
  scientific interpretation can be conveyed in a
  VOEvent packet ( see semantics_at_ivoa archive, 1
  7 June 2005).
• Future upgrade OWL file to use VOEvent 1.1,
  create STC ontology, import NASA units ontology.
• http//wiki.eurovotech.org/pub/VOTech/VoEventOntol
  ogy/VOEventOntology_v0.1.owl

10
Converting UML to OWL

• Goal Convert STC UML diagram to OWL.
• Obtained Visio 2003 UML diagram of STC schema
  from Arnold Rots.
• Poseidon tool requires XMI file as input to
  convert to OWL file, so download Microsoft
  XMIExprt utility for Visio 2003.
• Build XMIExprt in Visual Studio and save
  resulting file in Visio 2003 path open UML
  diagram and select XMI Export from add-ons menu.
• Apply Gasevics XMItoOWL .xslt tool to exported
  XMI file.
• Result empty OWL file.
• Future Create STC ontology by hand, import NASA
  unit ontology
• http//wiki.eurovotech.org/bin/view/VOTech/Ontolog
  iesFromUML
• http//wiki.eurovotech.org/bin/view/VOTech/StcOnto
  logy

11
VOEvent Ontology
VOEvent classes Based on hierarchy of has
properties
Protégé class list VOEvent
12
STC Ontology
Class hierarchy starts with substitution group
types bearing is a relationship to element
names. Other classes related by has
relationships.
13
Future Work

• Goal allow VOEvent RSS feed filtering with
  VOEvent ontology
• Science case
• Users can personalize VOEvent ontology logic to
  tailor their RSS feeds to list only specific
  types of events
• Test cases
• Solar flares only
• GRBs with optical afterglows only
• Users can generate workflow query to download
  observations pertaining to VOEvent packets in
  tailored RSS feed.
• Next steps
• Install VOEvent RSS feed for SuaveCAT
• Write application to tailor VOEvent ontology
  logic to filter feeds
• Work tailored feeds for SuaveCAT and GCN into
  AstroGrid workflow
• Demonstrate workflow that will fetch observations
  pertaining to relevant tailored VOEvent RSS feed
  into users MySpace
• Future proceed with implementation of VOEvent
  ontology logic application (CEA?)