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I am using the weka program and i want to know the values of y_true and y_pred through confusion matrix that appeared in the classification results , because I want to calculate the balanced multiclass accuracy value .

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https://www.cs.waikato.ac.nz/~ml/weka/ The screencap in the Evaluate predictive accuracy of Machine Learning without Programming shows the Correctly Classified Instances and the corresponding percentage.

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