CountExceptLM and CountExceptLex features for online grammar extraction.

1 files changed, 16 insertions, 0 deletions

diff --git a/python/cdec/sa/features.py b/python/cdec/sa/features.py
index c8fc1cca..fe3fb2bd 100644
--- a/python/cdec/sa/features.py
+++ b/python/cdec/sa/features.py
@@ -140,3 +140,19 @@ def IsSupportedOnline(ctx): # Occurs in online data?
         return (ctx.online.paircount > 0.01)
     else:
         return False
+
+def CountExceptLM(vocab):
+    def CountExceptLM(ctx): # In bitext (inc online data) but NOT mono text
+        return sum(1 for e in ctx.ephrase.words if e not in vocab)
+    return CountExceptLM
+
+def CountExceptLex(ttable):
+    def CountExceptLex(ctx):
+        count = 0.0
+        for e in ctx.ephrase.words:
+            if not ttable.contains_e_word(e):
+                count += 1
+        return count
+    return CountExceptLex
+
+