XML Schema for the Simulation Data Model

[Rick Wagner]

Hi,

After working to understand the current SNAP Data Model (in  
particular the current proposed XML Schema), I decided to distill it  
into a single document with fewer types. I've had some success, so   
I've post the Schema, and a sample instance document on the Twiki  
attached to the IVOATheorySimulationDatamodel page:

Schema
http://www.ivoa.net/internal/IVOA/IVOATheorySimulationDatamodel/ 
Simulation.xsd

Sample Instance
http://www.ivoa.net/internal/IVOA/IVOATheorySimulationDatamodel/ 
SimulationInstance.xml

At the bottom of the page there are links screen shots of the  
elements and data types, which help to show they're relations.

This schema keeps the method of characterization as the SNAP model,  
by defining the axes up front (or, at the top), but is less abstract.  
It treats a simulation and its data as the results of running a  
program with defined input parameters, and does not try describe  
everything about the method and numerical representation. To me,  
these are things defined by the program (the software), and could be  
handled by defining separate VOResource for "Program" or "Software  
Project".

If this works looks interesting to anyone, I would be glad to write  
up a fuller description, any even put some documentation in the  
Schema and instance documents.

I plagiarized heavily from both them SNAP Data Model, and the  
Spectral Schema, so any credit should go to Gerard and the DAL, Data  
Modeling group, and annoyed comments sent my way.

--Rick

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Rick Wagner, Graduate Student Researcher
UCSD Physics
9500 Gilman Drive
La Jolla, CA  92093-0424
Email:  rwagner at physics.ucsd.edu
WWW:    http://lca.ucsd.edu/projects/rpwagner
(858) 822-4784 Phone
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Measuring programming progress by lines of code is
like measuring aircraft building progress by weight.
--Bill Gates
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