updated example

Author: mjpost

example/hiero.conf

@@ -174,8 +174,10 @@ allow-double-plus   true
 # the following features:
 # (note: all probabilities are negative logprobs base e)
 #
-# e2fphrase -- phrasal probability p(f|e)
-# f2ephrase -- phrasal probability p(e|f)
+# f_given_e_phrase -- phrasal probability p(f|e)
+# e_given_f_phrase -- phrasal probability p(e|f)
+# e_given_f_phrase_gt_smoothed -- Good-Turing smooth P(e|f)
+# f_given_e_phrase_gt_smoothed -- Good-Turing smooth P(f|e)
 # lexprob -- lexical weights p_lex(e|f) and p_lex(f|e)
 # rarity -- rarity penalty exp(1 - C(A -> (e,f))), where C(.) is the total 
 # number of times the rule was seen in the corpus