class Spark::Sampler::Poisson
Public Instance Methods
lazy_sample(iterator)
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# File lib/spark/sampler.rb, line 57 def lazy_sample(iterator) Enumerator::Lazy.new(iterator) do |yielder, value| count = rng.rand count.times { yielder << value } end end
rng()
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# File lib/spark/sampler.rb, line 64 def rng @rng ||= Spark::RandomGenerator::Poisson.new(fraction, seed) end
sample(iterator)
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# File lib/spark/sampler.rb, line 47 def sample(iterator) iterator.map! do |item| count = rng.rand Array.new(count) { item } end iterator.flatten! iterator.compact! iterator end