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Hi,
<p>I am applying Ga to solve design problem in chemical engineering.
<p>Has anyone had any experience regarding the use of the sigma truncation
scaling scheme? As you know, the default value for the sigma truncation
multiplier in GAlib is 2. Has anyone experience using another value for
this and if so, what is the effect on the optimization, in terms of overcoming
premature convergence and slow finishing? I know the value can be problem
specific, but is there any rule of thumb? Will a higher/lower value of
the multiplier help, or is there a trade-off?
<p>Also, for negative objective functions, this method is said to 'truncate
arbitrarily at 0', can someone please explain what this mean?
<pre>Thanks in advance.</pre>
<pre>Kian H Low</pre>
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