Class: Spark::Command::Sample

Inherits:
Object
  • Object
show all
Defined in:
lib/spark/command/statistic.rb

Overview

Sample

Instance Method Summary collapse

Instance Method Details

#_sampler ⇒ Object 



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# File 'lib/spark/command/statistic.rb', line 23

def _sampler
  if @with_replacement
    sampler = Spark::Sampler::Poisson
  else
    sampler = Spark::Sampler::Uniform
  end

  sampler = sampler.new(@fraction, @seed)
end

#lazy_run(iterator, _) ⇒ Object 



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# File 'lib/spark/command/statistic.rb', line 15

def lazy_run(iterator, _)
  sampler.lazy_sample(iterator)
end

#run(iterator, _) ⇒ Object 



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# File 'lib/spark/command/statistic.rb', line 11

def run(iterator, _)
  sampler.sample(iterator)
end

#sampler ⇒ Object 



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# File 'lib/spark/command/statistic.rb', line 19

def sampler
  @sampler ||= _sampler
end