Visualize Classifier Error Weka

Posted by user1780592 on Stack Overflow See other posts from Stack Overflow or by user1780592
Published on 2014-06-13T03:21:19Z Indexed on 2014/06/13 3:24 UTC
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classification

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weka

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decisiontrees

Hye there i have a have datasets where this data i have test it on weka with J48 classifier

It give me an output = 87.2611%
Total of instances = 157
Correctly Instances = 137
Incorrectly instance = 20

Then i have do a visualize classifier error on my data. However my result have been decrease to:

New result = 85.4015% 
Correctly Instances = 117
Incorrectly instances = 20
Total of instances = 137

Is there any reason for that?

Should my result become much better after i do the visualize classifier error?

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