Use cases

• Images (E. Slesak)
  • Usual method to evaluate and classify the extaction from an image
  • Characterisation of the image (quality, PSFs, stability, noise)
  • Do we need to implement some new storing standards ?
  • Think about lack of characterisation standard
  • Noise model definition : very long work
  • Scientifical quality will depend on the noise model definition
  • Does the DM includes poisson noise
  • E. Slezak : ask M. Louys and F. Bonnarel (J. MacDowell) to check if there is something included inthe DM Char. If not : Write note concerning the inclusion of the poisson noise in Char model
  • Cross use of the images (mosaic) (checking form and flux)
  • Fusion of images multiwavelength images
  • Extraction of sources and targets from images

• Spectroscopy (P. Prugniel)
  • find common bricks to different scientifical use cases and easy to implement (for spectrum and observation)
  • bricks to be built separately included in a "pipeline"
  • compare models and observations (minimisation tools)
  • models : stellar athmosphere and stellar population
  • adjust resolution, redshift and extension
  • in Montpellier, grid of spectrum which will be accessible soon
  • lake in DM : characterisation (ok, ongoing work), observation models (we need other information like provenance DM), ...
  • workflow work depends on provenance
  • use Dalia (comparison tool, F. Boone) at the end of the workflow process ?

• Theory (F. Le Petit)
  • Simulations codes, 2 codes which will work together, in a first step outside workflows (takes a few days)
  • Asynchroneous code
  • Send code to distant from local interfaces to AstroGRID (done with F. Roy)
  • Results is sent to MySpace in FITS format (interfaces made by J. Normand)
  • What we hope : extraction could be accessed for part of the data
  • SNAP (Single Numerical Access Protocol)
    • Not completely tested now. Version 0.1 to be discussed in China
    • For cosmologic data to get simulations snapshots (for example with VisIVO)
    • Question : is it possible to extand it to other simulations (schedule : simulation presentation in Beijing, other domains in Cambridge)
    • The DM will be presented in China, but still in progress, does not includes limitations
    • The community is not ready for being interested in Workflow and is mainly concerned on Access Protocol

• Synthetical spectra (L. Chevallier)
  • Using Titan and NOAR for Compton heating.
  • separation of interface and computing space
  • TITAN & NOAR should be one brick
  • pause during the iteration
  • question concerning the implementation of old softwares with a VO layer in workflows
  • case of a brick composed by other bricks : do we use on brick or give the details

Tools

• News from AÏDA (A. Schaaff)
  • a trainee is working on the tool packaging
  • a 6 month trainee will start in September a work around VO (future) standards like Characterisation in the case of workflow and AÏDA will be the testing platform
  • future evolutions
    • bricks of bricks (possibility to use macros for macro loops)
    • "optional links" (run and check afterwards for next optional computation)
    • links to WebServices
    • links to applications linked in Plastic data (?)
    • ...

• Feedback from ESO Reflex meeting (A. Schaaff, E. Slezak, C. Pestel)
  • Reflex ends in 12/2007 (ESO pipeline workflow not linked to VO standards)
  • Use Taverna is not so easy (modification not easy, bricks are not really atomic and long term availability is not acquired)
• Aladin JLOW Plugin Demo (T. Boch, C. Pestel), http://aladin-u.starsbg.fr/java/nph-aladin.pl?frame=plugins, http://cdsweb.u-strasbg.fr/devcorner.gml
  • following the second meeting demo (prototype), the plugin has been redifined by C. Pestel
  • new possibilities and facilities, easy to use compared to the script mode

IVOA participation.

• note (E. Slezak) in DM concerning noise. check with Mireille and Francois to verify if something is needed or already planned in Characterisation
• participate to theory group (provenance model), P. Prugniel and F. Le Petit
• usecases not needed in this meeting but they can be added on the WEB pages of the IVOA (F. Le Petit, E. Slesak, P. Prugniel, L. Chevallier and J. Berthier)
• interactions with Paul harrison for Application model (A. Schaaff)
• plugin aladin-JLOW in apps group (T. Boch)

Working group visibility

• posters at SF2A (Grenoble, L. Chevallier-A. Schaaff? ) - JENAM (Ierevan, C. Surace?)- ADASS XVII (Londres, A. Schaaff?)
• VOTech : work around AÏDA and JLOW in current cyle, link with standards (characterisation, ...) in the following cycle

Main ongoing work

• interoperability of languages (AstroGrid, WEBCOM-G, AÏDA, ...), check with STIC community what are the finalities of the exchanges between workflows. What could be the best approach for standardisation. (contact J. Montagnat)

Bricks

• extraction of subparts in n dimesions hypercube
• separation of structures in n dimensions hypercube
• adapt resolution for imagery and spectrum
• fit multi components
• image addition, spectrum addition
• to be published in WIKI pages of the WG