Khadidja Nour el houda Slimani

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What is more relevant to use as a performance metric : ROC area or Precision, when We have the same Accuracy rates ?

If we have for two experiments (EXP1 and EXP2), the same accuracy rate and the following results: EXP1: a precision of 0.652F-measure = 0.551ROC = 0.74Recall = 0.567 vs. EXP2: a precision of...

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How can I specify the number of k clusters in a big data?

Hi, How to determin the number of k cluster in a dataset using k-means ? On what depends the specification of this number ?? ( I have a huge matrix ) Thanks in advance Regards

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