The International Virtual Observatory Alliance (IVOA) Composition & Purpose Juan de Dios Santander Vela (IAA-CSIC)
Jun 11, 2015
The International Virtual Observatory Alliance (IVOA)Composition & PurposeJuan de Dios Santander Vela (IAA-CSIC)
Overview
The International Virtual Observatory Alliance
Working Groups
Interest Groups
The IVOA Document Process
Anatomy of an IVOA standard
IVOA
Working Groups
Applications
Data Access Layer
Data Modelling
Grid & Web Services
Resource Registry
Semantics
VO Events
VO Query Language
VOTable
Interest Groups
Radio (obsolete)Data Curation &
Preservation
Theory
OGF AstroRG
Steering & Coordination
IVOA Executive
Technical Coordination Group
Standing Committee on Standards & Processes
inspired
Working Groups
ApplicationsConcerned with the software tools used to access VO data and services for doing Astronomy
Announcement & discussion of VO applications
Feedback on standards’ implementation
Identify missing/desirable technical capabilities & and scientific usability for VO applications
Propose and develop standards specific to VO Astronomy-user-Applications
Data Access LayerDefine and formulates VO standards for remote data access
Simple Cone Search, Simple Image Access, Simple Spectral Access…
Table Access Protocol
Data Access Layer Interface
More!
Data Modelling
Provides a framework for the description of metadata attached to observed or simulated data
Logical relationships between these metadata, based on how astronomers retrieve, process & interpret astronomical data
Provides an architecture to handle them
Data Models are used across all VO standards
Grid & Web Services
Defines the use of Grid technologies and Web Services within the VO context
Investigates, specifies, and implements required standards in this area
Resource Registry
The IVOA Registry allows clients to be able to locate, get details of, and make use of, any resource located anywhere in any Virtual Observatory
This WG defines the protocols and standards for registry services interoperability
SemanticsExplore semantic technology with the aim of producing new standards that aid VO interoperability
Concerned with meaning & interpretation of words, sentences, or other language forms in astronomy
ActivitiesMaintenance of UCDsIVOA Standard VocabularyExploration of Ontologies
VO Events
Define the content and meaning of a standard information packet for representing, transmitting, archiving, and publishing a discovery of an immediate event in the sky
Who, When, Where, What, How
VO Query Language
In charge of defining a universal Query Language to be used by applications accessing distributed data within the Virtual Observatory framework
VOQL ➡ ADQL, PQL
VOTable
Responsible for the definition of the VOTable, and its evolution
Cross-links with the Apps, DAL, and DM working groups
Now in maintenance mode
Steering & Coordination Committees
Steering & Coordination Committees
IVOA Executive
Technica Coordination Group
Standing Committee on Standards & Processes
Working Draft
Notes
significantrevision
IAU Standard
Recommendation
Proposed Recommendation
agreement withinworking group
IVOA-wide RFC, 4 weeks,with TCG 4-weeks review
possible IAU endorsementIAU VO
Working Group
IVOAExecutive
An IVOAWorking Group
Document StatusProposing Body
IVOA Document Process
inspired
IVOA Documents
References & Links
IVOA Website
IVOA Documents Repository
IVOA Document Standards Management