International Virtual Observatory Alliance

Difference: CharacterisationDataModel (21 vs. 22)

Revision 222010-02-22 - FrancoisBonnarel

META TOPICPARENT	name="IvoaDataModel"

DM work package : Characterisation Data Model

!!!New page(Feb 2010)!!! Work in progress : Site under re construction

coordination : François Bonnarel

Goal

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.

Characterisation 1 Legacy

* Characterisation Data Model effort led to a publication of a version 1 of the Data Model in 2008 (see legacy page)

Towards Characterisation version 2

From September 2007 on, a new effort started to take into account both dissemination of the model in Data centers and completion of the model for some complex use cases.

List of participants

Mireille.Louys, Alberto.Micol, Igor.Chilingarian, Peter.Skoda, Fabien.Chereau, Carlos.Rodrigo, Miguel.Cervino, Juan De Santander, François Bonnarel

Sorting out the issues

In April May 2008 we started to discuss the issues and Fabien proposed a new definition of the characterisation concept.

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