Fw: GT coefficients

Mirjam Sepesy Maucec mirjam.sepesy at uni-mb.si
Thu Sep 11 03:27:12 PDT 2008


I found an old question and no answer (in the SRI-LM Mailing List Archive) . I attach it!
I tackle the same problem:
When I convert decimal ,  (comma) into a . (dot) in discount files, warnings disappear...
Discount files were produced by make-big-lm script.



----- Original Message ----- 
From: ilya oparin 
To: srilm-list 
Sent: Sunday, June 11, 2006 3:05 PM
Subject: GT coefficients


If I count GT coefficients in advance and then feed GT-files (generated by make-gt-discounts) to ngram-count or make-big-lm, I get warnings of the kind

file.gt1: line 9: warning: discount coefficient 1 = 0.0
file.gt1: line 9: warning: discount coefficient 2 = 0.0

and so on for all the gt parameters. Files themselves are alright and do not contain any zeroes. Number next to line corresponds to the last line in a gt-file. 
The model I get with this differs from that I get when just use ngram-count without loading GT coefficients (it appears much smaller in bigrams and trigrams) with the same gtmin and gtmax values. 
Could anybody tell me why it happens like this? 

best regards,
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