CODEWITHSUNDEEP
machine-learningclassificationweka
user16168
user16168

Reputation: 655

WEKA 3.7.10 not compatible format, class index differ

I use weka for text classification, I have a train set and untagged test set, the goal is to classify test set.

In WEKA 3.6.6 everything goes well, I can select Supplied test set and train the model and get result.

On the same files, WEKA 3.7.10 says that 

Train and test set are not compatible. Would you like to automatically wrap the classifier in "inputMappedClassifier" before porceeding?

And when I press No it outputs the following error message

Problem evaluating classfier: Train and test are not compatible Class index differ
: 2!= 0

I understand that the key is Class index differ: 2!= 0.

However what does it mean? Why it works in WEKA 3.6.6 and not compatible in WEKA 3.7.10? How can I make the test set compatible to train set?

Upvotes: 0

Views: 696

Answers (1)

t_pereira
t_pereira

Reputation: 1

When you import the supplied test set, are you selecting the same class attribute as the one that you use in the train set? If you don't change this field, weka selects the last attribute as being the class automatically.

Upvotes: 0

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