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optimize.txt
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1997-07-08
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WELCOME TO THE OPTIMIZATION DEMO
Optimization algorithms search and find the
minimum of a function using iteration. Depending on
the function, a particular algorithm may converge
faster than another. An algorithm may not converge
at all in certain circumstances, where another
will.
This demo shows two methods : the
Donovan-Fletcher-Powell (DFP) and the Powell.
MENU OPTIONS
------------
File Menu:
Select "Quit" to exit the Optimization Demo and
return to the main IDL Demo screen.
About Menu:
Select "About optimization" for information
about the Optimization Demo.
FEATURES
--------
<<Select a Surface>> button
Select one of three different surfaces. These
surfaces are used for testing optimization
algorithms because they are known to produce
cases that exceed the bounds of the algorithms.
<<Select a Starting Point>> button
Select one of four different starting points.
<<Find Minimum>> button
Activated only after a starting point has been
specified, the sequence will compute and
display how the 2 algorithms find the minimum.
<<Reset surface>> button
Reset the selected surface to display the
four starting points on the initial surface.
<<Results>>
Displays the location of the minimum and the
number of iterations that were necessary.