Package Bio :: Package GA :: Package Crossover :: Module General :: Class SafeFitnessCrossover
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Class SafeFitnessCrossover

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object --+

Perform crossovers, but do not allow decreases in organism fitness.

This doesn't actually do any crossover work, but instead relies on another class to do the crossover and just checks that newly created organisms do not have less fitness. This is useful for cases where crossovers can

Instance Methods [hide private]
__init__(self, actual_crossover, accept_less=0.0)
Initialize to do safe crossovers.
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do_crossover(self, org_1, org_2)
Perform a safe crossover between the two organism.
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Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, actual_crossover, accept_less=0.0)

source code 

Initialize to do safe crossovers.

  • actual_crossover - A Crossover class which actually implements crossover functionality.
  • accept_less - A probability to accept crossovers which generate less fitness. This allows you to accept some crossovers which reduce fitness, but not all of them.
Overrides: object.__init__