Posts Tagged ‘ Machine learning and data mining ’

Weighting model fit with ctree in party

March 15, 2010
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Weighting model fit with ctree in party

Conditional inference trees (ctree) in package party allows weighting which is useful when one classification outcome is more important than another. Useful examples are not difficult to imagine: in a marketing direct mailing, a false positive (non-res...

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Compare performance of machine learning classifiers in R

December 23, 2009
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Compare performance of machine learning classifiers in R

This tutorial demonstrates to the R novice how to create five machine learning models for classification and compare the performance graphically with ROC curves in one chart. For a simpler introduction, start with Plot ROC curve and lift chart in R. # ...

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Plot ROC curve and lift chart in R

December 18, 2009
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Plot ROC curve and lift chart in R

This tutorial with real R code demonstrates how to create a predictive model using cforest (Breiman’s random forests) from the package party, evaluate the predictive model on a separate set of data, and then plot the performance using ROC curves ...

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