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) 


13
14
15
 
# 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.



9
10
11
 
# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 9

def data
  @data
end

#normalized_fitness ⇒ Object

Returns the value of attribute normalized_fitness.



9
10
11
 
# 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) 


38
39
40
 
# 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) 


31
32
33
 
# 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) 


23
24
25
 
# 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) 


18
19
20
 
# File 'lib/ai4r/genetic_algorithm/chromosome_base.rb', line 18

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