January 2020
Intermediate to advanced
346 pages
9h 8m
English
Content preview from Hands-On Genetic Algorithms with Python
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Simulated binary crossover
The idea behind the simulated binary crossover (SBX) is to imitate the properties of the single-point crossover that is commonly used with binary-coded chromosomes. One of these properties is that the average of the parents' values is equal to that of the offsprings' values.
When applying SBX, the two offspring are created from the two parents using the following formula:
Here, β is a random number referred to as the spread factor.
This formula has the following notable properties:
- The average of the two offspring is equal to that of the parents, regardless of the value of β.
- When the β value is 1, the offspring ...
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