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cross validation confusion matrix should include all cross validated data not just last

Predictive models with binary Y that allow cross validation, eg k-fold or leave one out, the confusion matrix reflect only the last iteration of the cross classification. For example in 5-fold cross validation the training set has 80% of the data and the Validation set shows 20%.  The validation set should combine all 5 folds of the data to show 100%.  For leave one out it is even more useless as the validation set only has a single observation.  

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Ryan_Gilmore
Community Manager
Status changed to: Archived
We are archiving this request. If this is still important please comment with additional details and we will reopen. Thank you!