Estimates the optimal number of boosting iterations for a gbm
object and
optionally plots various performance measures
1 2 3 4 5 |
object |
a |
plot.it |
an indicator of whether or not to plot the performance measures.
Setting |
oobag.curve |
indicates whether to plot the out-of-bag performance measures in a second plot. |
overlay |
if TRUE and oobag.curve=TRUE then a right y-axis is added to the training and test error plot and the estimated cumulative improvement in the loss function is plotted versus the iteration number. |
method |
indicate the method used to estimate the optimal number
of boosting iterations. |
gbm.perf
returns the estimated optimal number of iterations. The method
of computation depends on the method
argument.
Greg Ridgeway gregridgeway@gmail.com
gbm
, gbm.object
Questions? Problems? Suggestions? Tweet to @rdrrHQ or email at ian@mutexlabs.com.
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