Class: Fabes::Experiment

Inherits:
Object show all
Defined in:
lib/fabes/experiment.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, *alternatives) ⇒ Experiment

Returns a new instance of Experiment.



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# File 'lib/fabes/experiment.rb', line 5

def initialize(name, *alternatives)
  @name = name
  @alternatives = alternatives.map do |alternative|
    Fabes::Alternative.new alternative
  end
  save
end

Instance Attribute Details

#alternatives ⇒ Object

Returns the value of attribute alternatives.



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# File 'lib/fabes/experiment.rb', line 3

def alternatives
  @alternatives
end

#description ⇒ Object

Returns the value of attribute description.



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# File 'lib/fabes/experiment.rb', line 3

def description
  @description
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/fabes/experiment.rb', line 3

def name
  @name
end

Class Method Details

.all ⇒ Object 



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# File 'lib/fabes/experiment.rb', line 23

def self.all
  Fabes.db.all_experiments
end

.find(name) ⇒ Object 



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# File 'lib/fabes/experiment.rb', line 19

def self.find(name)
  Fabes.db.find_experiment name
end

.find_or_create(name, *alternatives) ⇒ Object 



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# File 'lib/fabes/experiment.rb', line 13

def self.find_or_create(name, *alternatives)
  #TODO: What happens if same experiment but different alternatives?
  #TODO: check the validation of alternatives
  experiment = find(name) or new(name, *alternatives)
end

Instance Method Details

#add_alternative(alternative) ⇒ Object 



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# File 'lib/fabes/experiment.rb', line 44

def add_alternative(alternative)
  @alternatives.push alternative
end

#control ⇒ Object 



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# File 'lib/fabes/experiment.rb', line 48

def control
  @alternatives.first
end

#find_alternative(id) ⇒ Object 



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# File 'lib/fabes/experiment.rb', line 36

def find_alternative(id)
  @alternatives.select {|alternative| alternative.id == id }.first or control
end

#save ⇒ Object 



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# File 'lib/fabes/experiment.rb', line 40

def save
  Fabes.db.save_experiment(self)
end

#select_alternative! ⇒ Object

TODO: make this an option and add different alternative selection algorithms



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# File 'lib/fabes/experiment.rb', line 28

def select_alternative!
  if exploration?
    random_alternative
  else #exploitation
    heaviest_alternative
  end
end