CR2 < GROUPEStravail

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---+++ Introduction
   
   * Aim of the working group
   * 2006 priorities (image and spectrum use cases) 
   * ...

---+++ Round table about people motivations

   * Interest about existing tool
   * Definition of use cases in their domain
   * Relation with VO standards
   * ...

---+++ Presentations


   * WEBCOM-G, Bruno Voisin <br>
       Demo with use of the Sesame Web Service<br>
       Easy acces to services of the VO<br>
       Job submission to grids<br>
       Implementation not ready for production use and sources not available for the moment
   * MOTEUR, Johan Montagnat <br>
       Example of medical image processing workflow<br>
       Flexible, easy access to Grids, ..., limited at the design level due to the use of Taverna<br>
       Research products<br>
       Good performances<br>
       Information about Workflow managers, DAGMan, Taverna, Triana, Kepler, ...
   * AÏDA and JLOW, Jean-Julien Claudon - Cyril Pestel - André Schaaff <br>
       Demo with an example provided by Eric Slésak
   * Image Use Case, Eric Slézak<br>
   * Spectrum Use Case, Philippe Prugniel<br>
   * Do we need portable workflows ? Scalability and conversion issues raised by the Aladin/AVO use case, Thomas Boch <br>
       Workflow used for the AVO 2004 Demo (search of QSO 2)<br>
       Workflow is present in Aladin but not visible, how to export a Workflow created in Aladin to other tools ? <br>
       Are people working on the interoperability between Workflow tools ? 
   * Search for signatures of Exoplanets in databases, A. Sarkissian <br>
   * A data model for the description of numerical codes used by the DALIA interface, Frédérick Boone <br>

---+++ Short resume of the final discussion :

   * definition of a basic model (elements, relations, ...) for workflows is needed if we want to use different tools like Taverna, ... without the writing of a worflow for each tool -> take the first use cases and try to implement them in a first set of tools, extraction of which elements (elementary boxes, ...) and relations are used to do it

   * following the previous point : creation of templates 

   * definition of a data model of the data used in a workflow

   * Check of the VO standards is needed (place of the Workflow, interaction with other standards, etc.)
  
   * Explore the relation with Grid technologies

   * ...

---+++ Use cases in other domains

one proposed by Jérôme Berthier (IMCCE)

Title: Fouille d'archives astronomiques

Aim: search and identify asteroids in the astronomical archives for the extraction of astrometric positions 
  of bodies before their discovery

Interest: extend the temporal period for which we have astrometrical measurements to improve orbital knowledge of the asteroids and in particular of the asteroids Earth-Crossing asteroids

first draft of the Workflow
- extraction of source in an image <br>
- possibly astrometric calibration <br>
- search of the celestial objects in "[[http://vizier.u-strasbg.fr][VizieR]]" and bodies of the Solar System ([[http://www.imcce.fr/page.php?nav=webservices/skybot/][SkyBoT]])<br>
- crossing between the image extracted objects and the objects found with [[http://vizier.u-strasbg.fr][VizieR]] and [[http://www.imcce.fr/page.php?nav=webservices/skybot/][SkyBoT]], i.e. celestial object identification
  (cette partie est en cours de developpement a l'IMCCE)<br>
- computing of the O-C for the bodies from the Solar System (and perhaps stars)<br>

<br>
Topic revision: r1 - 2008-10-10 - TWikiAdminUser