Class: Ai4r::GeneticAlgorithm::ChromosomeBase

Inherits:
Object
  • Object
show all
Defined in:
lib/ai4r/genetic_algorithm/chromosome_base.rb

Overview

Base interface for chromosomes used by GeneticSearch. Implementations must define class methods seed, mutate, reproduce and the instance method fitness.

Direct Known Subclasses

TspChromosome

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = nil) ⇒ Object

Parameters:

  • data (Object) (defaults to: nil) 


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# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 13

def initialize(data = nil)
  @data = data
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 9

def data
  @data
end

#normalized_fitness ⇒ Object

Returns the value of attribute normalized_fitness.



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# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 9

def normalized_fitness
  @normalized_fitness
end

Class Method Details

.mutate(_chromosome, _mutation_rate = 0.3) ⇒ Object

Parameters:

  • _chromosome (Object)
  • _mutation_rate (Object) (defaults to: 0.3)

Returns:

  • (Object)

Raises:

  • (NotImplementedError) 


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# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 38

def self.mutate(_chromosome, _mutation_rate = 0.3)
  raise NotImplementedError, 'Implement .mutate in subclass'
end

.reproduce(_a, _b, _crossover_rate = 0.4) ⇒ Object

Parameters:

  • _a (Object)
  • _b (Object)
  • _crossover_rate (Object) (defaults to: 0.4)

Returns:

  • (Object)

Raises:

  • (NotImplementedError) 


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# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 31

def self.reproduce(_a, _b, _crossover_rate = 0.4)
  raise NotImplementedError, 'Implement .reproduce in subclass'
end

.seed ⇒ Object

Returns:

  • (Object)

Raises:

  • (NotImplementedError) 


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# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 23

def self.seed
  raise NotImplementedError, 'Implement .seed in subclass'
end

Instance Method Details

#fitness ⇒ Object

Returns:

  • (Object)

Raises:

  • (NotImplementedError) 


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# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 18

def fitness
  raise NotImplementedError, 'Subclasses must implement #fitness'
end