machine-learningdata-sciencedata-miningweka
what's the error using supply test set for prediction
I am trying to analyze the titanic dataset and build a predictive model. I have preprocessed the datasets. Now while I am trying to predict using the test set and I don't know why it doesn't show any result.
Solution
If you open the two files (training and test set) you will notice a difference: in the training set the last column has value 0 or 1, whereas in the test set it has ? (undefined).
This means that your test set doesn't contain the answers, therefore Weka cannot do any evaluation. It could do predictions though.
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