ROC analysis
Eleni Does the fpr.stop argument do what you want? This is described in ?performance under the details of the "auc" measure. Try, e.g. perform=performance(pred,measure="auc",fpr.stop=0.5) Richard.
Eleni Christodoulou wrote:
Hello list, I am trying to perform ROC analysis and count the AUC in order to validate my results. I use package ROCR. I would like to count the AUC not under the cutoff found by "performance" but to use another cutoff that I calculate. How could I change the following command in order to get what I want? perform=performance(pred,measure="auc",x.measure="cutoff"), where pred is a prediction object. Thank you very much, Eleni [[alternative HTML version deleted]]
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