1 files changed, 29 insertions, 0 deletions
diff --git a/per-sentence-bleu b/per-sentence-bleu
new file mode 100755
index 0000000..402f364
--- /dev/null
+++ b/per-sentence-bleu
@@ -0,0 +1,29 @@
+#!/usr/bin/env ruby
+
+require 'zipf'
+require 'trollop'
+
+def main
+  conf = 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 conf[:references]
+  i = -1
+  input = ReadFile.new conf[:input]
+  while line = input.gets
+    i += 1
+    if line.strip == ''
+      puts 0.0
+      next
+    end
+    puts BLEU::per_sentence_bleu line.strip, refs[i], conf[:n], conf[:len_hack]
+  end
+  input.close
+end
+
+main
+