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automatic parametric space exploration and boundary detection.

by "Vista" <abc@[EMAIL PROTECTED] > Jun 12, 2007 at 09:55 PM

automatic parametric space exploration and boundary detection.

Hi all,

I am not sure where to ask about my "strange" question, so as an initial 
attempt, I post it here.

I have a parameterized function f(x, y, z, u, v), which takes values on
{0, 
1}, i.e. either 0 or 1.

Through experimenting I've found that when plotting out in 2D there is a 
clear linear cut in the parameter space.

If I plot f(1, y, z, 5, 7) as a mesh of grid size 0.1, the cut is a
straight 
line, the region below this line has f=1, and the region above this line
has 
f=0.

If I plot f(2, y, z, 5, 7) as a mesh of grid size 0.1, the cut is a
straight 
line, the region below this line has f=1, and the region above this line
has 
f=0. The only difference is that this line ****fted.

....

If I plot f(x, 1, z, 5, 7) and f(x, 2, z, 5, 7) etc., still there is a 
linear cut splitting the space.

....

If I plot f(x, y, 1, 5, 7) and f(x, y, 2, 5, 7) etc., still there is a 
linear cut splitting the space.

....

It looks like there is a space-cutting plane in my parameter space.

But the grid size is 0.1, I still have a hard time figuring out what will 
happen when grid size becomes 0.01 and 0.001, etc.

But still, I would like to discover how to define this cutting plane 
mathematically... ba

My function is too complicated, and can only be computed numerically, so I

had a hard time finding a closed form for this cutting plane.

Is there a way to determine the cutting plane using some automatifc 
procedure?

I mean, it looks like some kind of optimization procedure, it seeks the 
finest boundry in the space such that on the left of the cut, f=1 and on
the 
other side of the cut, f=0. It also looks like a regression problem. But
so 
far I am still not sure how to model it.

Can anybody give me some suggestions and comments?

Thanks a lot!
 




 8 Posts in Topic:
automatic parametric space exploration and boundary detection.
"Vista" <abc  2007-06-12 21:55:53 
Re: automatic parametric space exploration and boundary detectio
"Vista" <abc  2007-06-13 10:29:56 
Re: automatic parametric space exploration and boundary detectio
"Paul A. Rubin"  2007-06-13 14:17:12 
Re: automatic parametric space exploration and boundary detectio
"Graham Jones"   2007-06-13 22:09:38 
Re: automatic parametric space exploration and boundary detectio
"Vista" <abc  2007-06-13 10:37:12 
Re: automatic parametric space exploration and boundary detectio
"Paul A. Rubin"  2007-06-13 14:20:53 
Re: automatic parametric space exploration and boundary detectio
Toby Kelsey <toby.kels  2007-06-13 21:04:14 
Re: automatic parametric space exploration and boundary detectio
Fred Krogh <fkrogh@[EM  2007-06-13 14:24:43 

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