Class: Gargor

Inherits:
Object
  • Object
show all
Defined in:
lib/gargor.rb,
lib/gargor/version.rb,
lib/gargor/parameter.rb,
lib/gargor/individual.rb

Defined Under Namespace

Classes: Individual, Parameter

Constant Summary collapse

GLOBAL_OPTS = 
["population","max_generations","target_nodes",
"attack_cmd","elite","mutation","target_cooking_cmd",
"attack_node","fitness_precision","attack_result"]
VERSION = 
"0.0.2"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.crossover(a, b) ⇒ Object 



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# File 'lib/gargor.rb', line 58

def crossover a,b
  return a.clone if a.params == b.params
  puts "crossover: #{a} #{b}"
  total = a.fitness + b.fitness
  c = Individual.new
  c.params = a.params.clone

  c.params.each { |name,param|
    cur = float_rand(total)
    c.params[name] = b.params[name] if b.fitness > cur
  }
  puts "#{a.to_s} + #{b.to_s} \n    => #{c.to_s}"
  c
end

.float_rand(f, p = @@fitness_precision) ⇒ Object

浮動小数点対応のrand



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# File 'lib/gargor.rb', line 51

def float_rand(f,p = @@fitness_precision)
  f *= @@fitness_precision
  i = f.to_i
  f = rand(i)
  f / @@fitness_precision.to_f
end

.individuals ⇒ Object 



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# File 'lib/gargor.rb', line 136

def individuals
  @@individuals
end

.load_dsl(params_file) ⇒ Object 



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# File 'lib/gargor.rb', line 34

def load_dsl(params_file)
  contents = File.open(params_file, 'rb'){ |f| f.read }
  new.instance_eval(contents)
  raise "POPULATION == 0" if @@population == 0
end

.mutation ⇒ Object 



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# File 'lib/gargor.rb', line 40

def mutation
  individual = Individual.new
  @@param_procs.each { |name,proc|
    param =  Parameter.new(name)
    param.instance_eval(&proc)
    individual.params[name] = param
  }
  individual
end

.next_generation ⇒ Object 



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# File 'lib/gargor.rb', line 126

def next_generation
  puts "<== end generation #{@@generation}"
  @@generation += 1
  return false if @@generation > @@max_generations

  puts "==> next generation #{@@generation}"
  @@prev_generation = @@individuals
  true
end

.opt(name) ⇒ Object 



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# File 'lib/gargor.rb', line 140

def opt name
  Gargor.class_variable_get("@@#{name}")
end

.populate ⇒ Object 



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# File 'lib/gargor.rb', line 83

def populate
  @@individuals = []
  
  # 第一世代
  unless @@prev_generation
    @@individuals << mutation.load_now
    loop{
      break if @@individuals.length >= @@population
      @@individuals << mutation
    }
    return @@individuals
  end

  # fitness > 0 適応している個体
  prev_count = @@prev_generation.select { |i| i.fitness > 0 }.count

  if prev_count < 2
    raise "***** EXTERMINATION ******"
  end

  puts "population: #{@@prev_generation.length}"
  @@individuals = @@prev_generation.sort{ |a,b| a.fitness<=>b.fitness }.last(@@elite) if @@elite > 0
  loop{
    break if @@individuals.length >= @@population
    if rand <= @@mutation
      i =  mutation
      puts "mutation #{i}"
    else
      a = selection @@prev_generation
      b = selection @@prev_generation
      i = crossover(a,b)
    end

    #同じのは追加しない
    if i and !@@individuals.find { |ii| ii.params == i.params }
      @@individuals << i 
    end
  }
  puts "poulate: #{@@individuals}"
  @@individuals
end

.selection(g) ⇒ Object 



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# File 'lib/gargor.rb', line 73

def selection g
  total = g.inject(0) { |sum,i| sum += i.fitness }
  cur = float_rand(total)
  g.each { |i|
    return i if i.fitness > cur
    cur -= i.fitness
  }
  raise "error selection"
end

.start ⇒ Object 



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# File 'lib/gargor.rb', line 19

def start
  @@fitness_precision = 100000000
  @@prev_generation = nil
  @@individuals = []
  @@param_procs = {}
  @@population = 0
  @@max_generations = 1
  @@generation = 1
  @@elite = 0
  @@attack_cmd = "false"
  @@attack_proc = nil
  @@evaluate_proc = Proc.new { 0 }
  @@target_nodes = []
end

Instance Method Details

#attack(cmd, &block) ⇒ Object 



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# File 'lib/gargor.rb', line 149

def attack cmd,&block
  @@attack_cmd = cmd
  @@attack_proc = block
end

#evaluate(&block) ⇒ Object 



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# File 'lib/gargor.rb', line 154

def evaluate &block
  @@evaluate_proc = block
end

#param(name, &block) ⇒ Object 



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# File 'lib/gargor.rb', line 145

def param name,&block
  @@param_procs[name] = block
end