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#!/usr/bin/env ruby
require 'zipf'
require 'trollop'
def main
cfg = Trollop::options do
opt :input, "input", :type => :string, :default => '-'
opt :references, "references", :type => :string, :required => true
opt :len_hack, "hack of Nakov et al", :type => :int, :default => 0
opt :n, "N", :default => 4
end
refs = ReadFile.readlines_strip cfg[:references]
i = -1
input = ReadFile.new cfg[:input]
while line = input.gets
i += 1
if line.strip == ''
puts 0.0
next
end
puts BLEU::per_sentence_bleu line.strip, refs[i], cfg[:n], cfg[:len_hack]
end
input.close
end
main
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