Comparison of Crossover Methods: 'crossoverheuristic' vs 'crossoverintermediate' vs 'crossoverarithmetic'

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How is 'crossoverheuristic' different from 'crossoverintermediate'?
  • Is that 'crossoverheuristic' always take ratio greater than 1, i.e., the offspring will always be much far from the parent with lower fitness compared to the parent with higher fitness?
  • Is 'crossoverheuristic' a special case of 'crossoverintermediate'?
Should the ratio be always scalar in 'crossoverheuristic'?
Is there any issue in setting the ratio to greater than 1 for 'crossoverintermediate' over a problem with linear constraints and bounds?
How is 'crossoverarithmetic' different from 'crossoverintermediate'?

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Aneela
Aneela 2024-6-7
Hi Dhanesh,
Crossover heuristic:
  • The heuristic crossover is a method that generates a single offspring from two parents by moving from the worse parent towards the better parent.
  • The ratio determines how far beyond the better parent the offspring will be created.
  • Using a ratio greater than 1 encourages exploration by creating offspring that are not strictly within the bounds defined by the parent solutions.
Crossover intermediate:
  • Intermediate crossover produce offspring that lie between the parents or beyond them, depending on the coefficients used.
  • Setting the ratio to values greater than 1 can lead to offspring that lie outside the parents' interval.
Crossover Arithmetic:
  • Arithmetic crossover is a specific type of intermediate crossover where the same coefficient is used for all dimensions of the problem.
  • It offers a simpler and more consistent blending of parental genes.

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