NaN - classification results (cbayes)

[Sam Cunningham <sa...@yahoo.com>]

Using ClassifierDemo class provided below

https://bitbucket.org/jaganadhg/blog/src/tip/bck9/java/src/org/bc/kl/ClassifierDemo.java 

I tested the 20news test data with the trained model. It worked fine.
However, when I ran the same class (ClassifierDemo) against my own test
dataset with my own trained model, I received the following messages. It
basically is returning NaN per potential class. And the final label it is
assigning the test dataset to is wrong and is always the same label:
"Health", which is the default category, I think. Why is it doing this? I am
pretty sure I trained it and generated the model correctly.

Oct 31, 2011 2:00:09 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Read 50000 feature weights
Oct 31, 2011 2:00:09 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Read 100000 feature weights
Oct 31, 2011 2:00:09 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Read 150000 feature weights
Oct 31, 2011 2:00:09 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: 0.0
Oct 31, 2011 2:00:11 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Health NaN NaN NaN
Oct 31, 2011 2:00:11 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: SciTech NaN NaN NaN
Oct 31, 2011 2:00:11 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: General NaN NaN NaN
Oct 31, 2011 2:00:11 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Entertainment NaN NaN NaN
Oct 31, 2011 2:00:11 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Politics NaN NaN NaN
Oct 31, 2011 2:00:11 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Sports NaN NaN NaN
Oct 31, 2011 2:00:11 PM org.slf4j.impl.JCLLoggerAdapter info
INFO: Business NaN NaN NaN
Label: Health Score: 988.1363714476455 

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Re: NaN - classification results (cbayes)

[Chris Hostetter <ho...@fucit.org>]

: Subject: NaN - classification results (cbayes)

: Using ClassifierDemo class provided below

I suspect you really want to send this question to the mahout-user mailing 
list...

https://cwiki.apache.org/confluence/display/MAHOUT/Mailing+Lists%2C+IRC+and+Archives#MailingLists%2CIRCandArchives-MahoutUserList



-Hoss