Questions In Machine learning

How To Fix Error In Confusion Matrix: The Data And Reference Factors Must Have The Same Number Of Levels?

Hello, While I’m working on R caret Linear Regression model. I’m trying to execute a confusion matrix and then I’m getting this below:

Error in confusionMatrix.default(pred, testing$Final): the data and reference factors must have the same number of levels.

Can anyone tell me What does it mean, Why this error occurs, and How to fix this error?

 

1answer

29th June 2020


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