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### Calculating misclassification rate for k-fold cross validation (logistic regression)

I am trying to manually write code to perform a k-fold cross validation for a logistic regression model for the first time. Unfortunately I am getting stuck trying to implement the following formula ...
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### Cut-off probability for multi-class problem

I would like to know whether there is a cut-off probability of outcome when classifying observations into more than 2 classes. For instance, the threshold in binary logistic regression is usually 0.5,...
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### How to compare the results of a leave-one-out strategy?

I tried to reproduce the experiments described in this paper and wanted to compare the output of my system with the one described in the article. I am looking for a statistical comparison of the ...
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### logistic regression with an imbalanced data set, picking threshold cut point [duplicate]

This question relates to whether it is a good starting point for a cut point in binary classification with logistic regression to the use the mean of the binary response variable as the initial cut ...
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### Logistic Regression: the logic of testing for all threshold probabilities in an ROC Plot?

In Logistic Regression, what's the logic of testing for all threshold probabilities in an ROC Plot? I thought that in logistic regression, we're concerned with the 0.5 probability threshold, and if ...
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### Predicted probability from logistic regression higher than actual distribution

I am running logistic models with data where I typically have proportions for the dependent variable that looks like the following: ...