All the value of Performance vector in Cross Validation are zero

User: "salmaardelia_"
New Altair Community Member
Updated by Jocelyn
Hiii, im new on Rapid Miner; 

Im doing sentimen analysis with Naive Bayes alghoritm.
When i use "Apply Model", the model can show prediction.But when i use "Cross Validation" and i run it, the prediction vector show that all the value are zero. Why? 

Please help me..

Regards

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