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matloff / qeML

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qeROC call #7

Closed carbonmetrics closed 1 year ago

carbonmetrics commented 1 year ago

page 47:

w <- qeROC(tc,knnout,'Churn','Yes')

but this does not work, because the function has 3 arguments instead of 4: function (dataIn, qeOut, yLevelName)

the example works with: w = qeROC(dataIn = tc, qeOut = knnout, yLevelName = "Yes")

but that inverts the curve. works as foreseen via w = qeROC(dataIn = tc, qeOut = knnout, yLevelName = "No")

btw - the no-show data set page 42 footnote 3 has the problem that the original Y name = "No-show", which is invalid in R.

matloff commented 1 year ago

Thanks so much for uncovering this error in the book. The 'yName' argument should not be in the calls. I've now added an entry to the Errata file.