chore: import upstream snapshot with attribution

decoding/GAD/scripts/convert_dictionary.lua

@@ -0,0 +1,34 @@
+-- Copyright (c) Facebook, Inc. and its affiliates.
+--
+-- This source code is licensed under the MIT license found in the
+-- LICENSE file in the root directory of this source tree.
+--
+-- Usage: convert_dictionary.lua <dict.th7>
+require 'fairseq'
+require 'torch'
+require 'paths'
+
+if #arg < 1 then
+   print('usage: convert_dictionary.lua <dict.th7>')
+   os.exit(1)
+end
+if not paths.filep(arg[1]) then
+   print('error: file does not exit: ' .. arg[1])
+   os.exit(1)
+end
+
+dict = torch.load(arg[1])
+dst = paths.basename(arg[1]):gsub('.th7', '.txt')
+assert(dst:match('.txt$'))
+
+f = io.open(dst, 'w')
+for idx, symbol in ipairs(dict.index_to_symbol) do
+  if idx > dict.cutoff then
+    break
+  end
+  f:write(symbol)
+  f:write(' ')
+  f:write(dict.index_to_freq[idx])
+  f:write('\n')
+end
+f:close()