[jgap-users] IntegerGene.applyMutation correct/meaningful?

[Daniel S. <dan...@gm...>]

Hi everyone,

I just played around with this framework and found that the
IntegerGene.applyMutation method is not really meaningfull - or do I
just not understand it?
Would not something like the following make more sense?

greets, Daniel

	/**
	 * Scales value uniformly, i.e. a_percentage of 1 sets the value to
	 * the upper bound and all positive percentages scale linearly between
	 * the current value and the upper bound.
	 * Analogously for negative percentages.
	 * @param a_index ignored (because there is only 1 atomic element)
	 * @param a_percentage percentage of mutation (greater than -1 and smaller
	 * than 1)
	 *
	 * @author Daniel Schreiber
	 * @since 1.1
	 */
	public void applyMutation(final int a_index, final double a_percentage) {
		int add;
		if(a_percentage >= 0) {			
			add = (int) Math.round(((long) getUpperBounds() - (long)
intValue()) * a_percentage);
		} else {
			add = (int) Math.round(((long) intValue() - (long)
getLowerBounds()) * a_percentage); //negative!
		}
		setAllele(new Integer(intValue()+add));	
	}