Re: Mutations and genetics in Applied Optics

"Mike Goodrich" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> In article <[EMAIL PROTECTED]>, Kari Tikkanen wrote:
> > I was looking for quite different Optics article but I saw this
> > which look strange because of terminology(chromosomes, crossover..)
> > in middle of optics article:
> >
> > ---------------------
> >  Applied Optics-IP, Volume 42, Issue 20, 4156-4165
> >  July 2003
> >
> >  Multiplexed Computer-Generated Holograms with Polygonal-Aperture
Layouts
> >  Optimized by Genetic Algorithm
> >
> >  Jean-Numa Gillet, Yunlong Sheng
> >
> > ABSTRACT
> >
> > "Using a novel genetic algorithm (GA) with a Lamarckian search we
optimize
> > the polygonal layout of a new type of multiplexed computer-generated
> > hologram (MCGH) with polygonal apertures. A period of the MCGH is
divided
> > into cells, and the cell is further divided into polygonal apertures
> > according to a polygonal layout, which is to be optimized. Among an
> > ensemble of 1.21 x 1024 possible polygonal layouts, we take a population
> > of 102 solutions, which are coded as chromosomes of bits, and find the
> > optimal solution with our GA. We introduce rank-based selection with
> > cumulative normal distribution fitness, double crossover, exponentially
> > decreasing mutation probability and Lamarckian downhill search with a
> > small number of offspring chromosomes into our GA, which shows a rapid
> > convergence to the global minimum of the cost function. In a second step
> > of optimization the phase distributions over the subholograms in the
MCGH
> > are determined with our iterative subhologram design algorithm. Our MCGH
> > designs show large-size reconstructed images with high diffraction
> > efficiency and low reconstruction error. © 2003 Optical Society of
> > America"
> > ----------------------
> > -http://aoip.osa.org/abstract.cfm?id=73275
> > (Some of You can download the arcticle with sample picture of dogs).
> >
> > How can creationists explain that algorithm that uses mutations
> > could ever reconstruct anything so sweet and charming - the dogs ? ;)
>
>

> Easy, we creationists explain it as yet another amazing accomplishment of
> intelligent design ...no matter what the data say.

Frank


>
> cheers,
>
> -mg
>