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Contents
module Split
module Algorithms
module WeightedSample
def self.choose_alternative(experiment)
weights = experiment.alternatives.map(&:weight)
total = weights.inject(:+)
point = rand * total
experiment.alternatives.zip(weights).each do |n,w|
return n if w >= point
point -= w
end
end
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems