Merge pull request #3855 from rerngvit/fix/attention_ocr_momentum_flag

Fix momentum value flag from string => float

research/attention_ocr/python/common_flags.py

@@ -73,7 +73,7 @@ def define():
   flags.DEFINE_string('optimizer', 'momentum',
                       'the optimizer to use')
 
-  flags.DEFINE_string('momentum', 0.9,
+  flags.DEFINE_float('momentum', 0.9,
                       'momentum value for the momentum optimizer if used')
 
   flags.DEFINE_bool('use_augment_input', True,