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Random mutation formula isn't quite right #5

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GoogleCodeExporter opened this issue Mar 14, 2015 · 1 comment

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auto-migrated Priority-Medium Type-Defect

GoogleCodeExporter commented Mar 14, 2015

In SfxrParams.as at line 422-443 the formula use to randomize is:
Math.random() * mutation*2 - mutation;

While should be:
Math.random() * (mutation*2 - mutation);


Consider:
mutation = 0.05;
Math.random() = 0;

Old formula:
0 * 0.05*2 - 0.05 = -0.05; // Not expected

New formula:
0 * (0.05*2 - 0.05) = 0; // Expected

Original issue reported on code.google.com by [email protected] on 26 Apr 2011 at 5:57

The text was updated successfully, but these errors were encountered:

GoogleCodeExporter added Type-Defect Priority-Medium auto-migrated labels

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GoogleCodeExporter commented Mar 14, 2015

The formula is right, sorry about this post...
I feel like an idiot for opening the thread.

Original comment by [email protected] on 26 Apr 2011 at 7:02

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