CharacterisationDataModel < IVOA

<H1> DataModel work package : Characterisation Data Model</H1>
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   * coordination :  [[IVOA.FrancoisBonnarel][François Bonnarel]] 
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<H2>Goal </H2>
   This workpackage is aiming at defining the high level metadata necessary to describe the
astronomical data sets on their physical axes, either observed or simulated,
for various types of data like 2D-images, data cubes, X-ray event lists, IFU
data, etc.. 
   The goal is to provide an abstraction which contains structured
information for all these types of data so that discovery and interpretation
is feasible in a general framework, and can be used jointly for science cases.
The model aims at facilitating the manipulation of heterogeneous data in VO
portals. A VO Characterization instance can include descriptions of the data
axes, the range of coordinates covered by the data, and information on the
data sampling and resolution on each axis. These descriptions are in terms of
physical variables, with the specific instrumental signature abstracted away.
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<H2>Charter</H2>

<H2>History</H2>
   * started after Cambridge Interop 2003
   * technical meetings in Garching, Strasbourg, Villa Franca
   * First draft by 2005
   * IVOA submission by spring 2007
  

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<H2>Results and Feedback </H2>
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---++ Data Model serialisation  
---+++Xml schema 
   * Characterisation XML schema version 1.11
[[http://www.ivoa.net/xml/Characterisation/Characterisation-v1.11.xsd][Characterisation-v1.11.xsd]].
   * Characterisation Utype lists version 1.11
---+++ XML instance documents following the schema
   * Xml schema for Characterisation draft version 1.0
[[http://alinda.u-strasbg.fr/Model/Characterisation/examples/]].


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---++ Working Documents
   * note: [[%ATTACHURL%/votable-1x.html][votable-1x.html]]
   * 2nd draft of proj version x.x: [[%ATTACHURL%/VOTable-1.*09.pdf][VOTable-1.09.pdf]]
      * comments on this draft: CharacterisationRFC

   * Xml schema for Characterisation draft version 1.0
[[http://alinda.u-strasbg.fr/Model/Characterisation/schema/characterisation.1.0.xsd][xsd]].

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---++ More documentation  
   * see article at : [[%ATTACHURL%/votable-1x.html][votable-1x.html]]
   *

<H2>Interactions with other efforts</H2>
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   * [[IVOADAL][IVOA Data Access Layer]] <br/>
   * [[IvoaTheorySimulationDataModel][Simulation Data Model]]
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---++ Requirements from other groups
   * in 

   * out 

   * 

<H2>Conclusions</H2>
[Under construction...]<br/>


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This topic: IVOA > WebHome > IvoaDataModel > CharacterisationDataModel
Topic revision: r2 - 2007-08-28 - MireilleLouys